Wednesday, May 5, 2010

Hot off the presses! May 01 Nature nanotechnology

The May 01 issue of the Nature nanotechnology is now up on Pubget (About Nature nanotechnology): if you're at a subscribing institution, just click the link in the latest link at the home page. (Note you'll only be able to get all the PDFs in the issue if your institution subscribes to Pubget.)

Latest Articles Include:

  • A brief history of some landmark papers
    - Nature Nanotechnology 5(4):237 (2010)
    Nature Structural & Molecular Biology | Editorial Us and them Journal name:Nature Structural & Molecular BiologyVolume:17,Page:529Year published:(2010)DOI:doi:10.1038/nsmb0510-529 Our recent web focus on virology and several articles in this issue prompt us to ask how a molecular understanding of the host-pathogen interaction can lead to the development of novel strategies to combat infectious diseases. View full text Additional data
  • 35 atoms that changed the nanoworld
    Toumey C - Nature Nanotechnology 5(4):239-241 (2010)
    Twenty years after spelling out IBM with atoms, the scanning tunnelling microscope is still going strong.
  • Our choice from the recent literature
    - Nature Nanotechnology 5(4):242 (2010)
    ARTICLE NAVIGATION - ISSUE Previous April 2010, Volume 5 No 4 pp237-309 * Editorial * Thesis * Research Highlights * News and Views * Letters * Articles * CorrigendumAbout the cover Editorial A brief history of some landmark papers - p237 doi:10.1038/nnano.2010.80 Twenty years after spelling out IBM with atoms, the scanning tunnelling microscope is still going strong. Full Text - A brief history of some landmark papers | PDF (116 KB) - A brief history of some landmark papers Subject Categories: Nanometrology and instrumentation | Surface patterning and imaging Thesis 35 atoms that changed the nanoworld - pp239 - 241 Chris Toumey doi:10.1038/nnano.2010.61 It is 20 years since researchers at IBM spelt out the name of their company with atoms. looks at the story behind a landmark in nanotechnology. Full Text - 35 atoms that changed the nanoworld | PDF (527 KB) - 35 atoms that changed the nanoworld Subject Categories: Nanometrology and instrumentation | Surface patterning and imaging Research Highlights Our choice from the recent literature - p242 doi:10.1038/nnano.2010.73 Full Text - Our choice from the recent literature | PDF (131 KB) - Our choice from the recent literature News and Views Block copolymers: With a little help from above - pp243 - 244 Justin E. Poelma & Craig J. Hawker doi:10.1038/nnano.2010.60 Complex nanoscale patterns can be generated by combining the self-assembly of block-copolymer thin films with minimal top-down templating. Full Text - Block copolymersWith a little help from above | PDF (619 KB) - Block copolymersWith a little help from above Subject Categories: Molecular self-assembly | Surface patterning and imaging Organic conductors: A dash of salt is superconducting - pp244 - 245 James S. Brooks doi:10.1038/nnano.2010.63 In an experimental tour de force involving ultrahigh vacuum and low-temperature scanning probe techniques, researchers have created organic nanostructures that show evidence of unconventional superconductivity. Full Text - Organic conductorsA dash of salt is superconducting | PDF (236 KB) - Organic conductorsA dash of salt is superconducting Subject Categories: Electronic properties and devices | Surface patterning and imaging Nanomechanics: Welcome to the quantum ground state - p245 Peter Rodgers doi:10.1038/nnano.2010.70 Full Text - NanomechanicsWelcome to the quantum ground state | PDF (169 KB) - NanomechanicsWelcome to the quantum ground state Subject Categories: NEMS | Quantum information DNA sequencing: Read with quantum mechanics - pp246 - 247 Thomas Thundat doi:10.1038/nnano.2010.72 Electron tunnelling can be used to selectively identify the basic constituents of DNA, indicating that the approach could be used to efficiently read a DNA sequence. Full Text - DNA sequencingRead with quantum mechanics | PDF (202 KB) - DNA sequencingRead with quantum mechanics Subject Categories: Electronic properties and devices | Nanobiotechnology Self-healing materials: Get ready for repair-and-go - pp247 - 248 Scott R. White & Philippe H. Geubelle doi:10.1038/nnano.2010.66 Computer simulations have shown that hydrophobic nanoparticles encapsulated in a deformable shell can repair surfaces in a manner that is similar to the way white blood cells work in the body. Full Text - Self-healing materialsGet ready for repair-and-go | PDF (175 KB) - Self-healing materialsGet ready for repair-and-go Subject Categories: Nanomaterials | Synthesis and processing Water desalination: Fresh for less - pp248 - 250 Mark A. Shannon doi:10.1038/nnano.2010.71 Salt water can be separated into desalted and saltier streams by a nanochannel-based device that requires only low-voltage electricity. Full Text - Water desalinationFresh for less | PDF (165 KB) - Water desalinationFresh for less Subject Categories: Nanofluidics | Nanosensors and other devices Letters Polyethylene nanofibres with very high thermal conductivities - pp251 - 255 Sheng Shen, Asegun Henry, Jonathan Tong, Ruiting Zheng & Gang Chen doi:10.1038/nnano.2010.27 Ultradrawn polymer fibres with diameters of 50–500 nm and lengths up to tens of millimetres have been prepared, and found to show thermal conductivities as high as ~105 W m−1 K−1. Abstract - Polyethylene nanofibres with very high thermal conductivities | Full Text - Polyethylene nanofibres with very high thermal conductivities | PDF (514 KB) - Polyethylene nanofibres with very high thermal conductivities | Supplementary information Subject Categories: Nanomaterials | Structural properties Complex self-assembled patterns using sparse commensurate templates with locally varying motifs - pp256 - 260 Joel K. W. Yang, Yeon Sik Jung, Jae-Byum Chang, R. A. Mickiewicz, A. Alexander-Katz, C. A. Ross & Karl K. Berggren doi:10.1038/nnano.2010.30 Suitable distributions of vertical posts, prepared by electron-beam patterning of an inorganic resist, can be used to template complex patterns in a cylindrical block copolymer. Abstract - Complex self-assembled patterns using sparse commensurate templates with locally varying motifs | Full Text - Complex self-assembled patterns using sparse commensurate templates with locally varying motifs | PDF (3,341 KB) - Complex self-assembled patterns using sparse commensurate templates with locally varying motifs | Supplementary information Subject Categories: Molecular self-assembly | Surface patterning and imaging See also:News and Views by Poelma & Hawker Superconductivity in just four pairs of (BETS)2GaCl4 molecules - pp261 - 265 K. Clark, A. Hassanien, S. Khan, K.-F. Braun, H. Tanaka & S.-W. Hla doi:10.1038/nnano.2010.41 Real-space scanning tunnelling spectroscopy has provided new insights into the properties of a well-known two-dimensional organic superconductor, including a superconducting gap that increases exponentially with the length of the molecular chain. Abstract - Superconductivity in just four pairs of (BETS)2GaCl4 molecules | Full Text - Superconductivity in just four pairs of (BETS)2GaCl4 molecules | PDF (770 KB) - Superconductivity in just four pairs of (BETS)2GaCl4 molecules | Supplementary information Subject Categories: Electronic properties and devices | Surface patterning and imaging See also:News and Views by Brooks Proposal for an all-spin logic device with built-in memory - pp266 - 270 Behtash Behin-Aein, Deepanjan Datta, Sayeef Salahuddin & Supriyo Datta doi:10.1038/nnano.2010.31 A spintronic device in which the input, output and internal states are all represented by spin, and that shows the five essential characteristics necessary for logic applications, is proposed. Abstract - Proposal for an all-spin logic device with built-in memory | Full Text - Proposal for an all-spin logic device with built-in memory | PDF (477 KB) - Proposal for an all-spin logic device with built-in memory | Supplementary information Subject Categories: Computational nanotechnology | Electronic properties and devices | Nanomagnetism and spintronics One-to-one comparison of sunscreen efficacy, aesthetics and potential nanotoxicity - pp271 - 274 Amanda S. Barnard doi:10.1038/nnano.2010.25 Theoretical simulation predicts that unless very small nanoparticles are shown to be safe, there is no combination of nanoparticle size and concentration that will deliver optimal sun protection while being safe and aesthetically appealing. Abstract - One-to-one comparison of sunscreen efficacy, aesthetics and potential nanotoxicity | Full Text - One-to-one comparison of sunscreen efficacy, aesthetics and potential nanotoxicity | PDF (403 KB) - One-to-one comparison of sunscreen efficacy, aesthetics and potential nanotoxicity | Supplementary information Subject Category: Environmental, health and safety issues Lipid multilayer gratings - pp275 - 279 Steven Lenhert, Falko Brinkmann, Thomas Laue, Stefan Walheim, Christoph Vannahme, Soenke Klinkhammer, Miao Xu, Sylwia Sekula, Timo Mappes, Thomas Schimmel & Harald Fuchs doi:10.1038/nnano.2010.17 Diffraction gratings composed of lipid multilayers can be fabricated by dip-pen nanolithography and used for label-free biosensing. Abstract - Lipid multilayer gratings | Full Text - Lipid multilayer gratings | PDF (702 KB) - Lipid multilayer gratings | Supplementary information Subject Categories: Nanosensors and other devices | Photonic structures and devices Kinetics of antimicrobial peptide activity measured on individual bacterial cells using high-speed atomic force microscopy - pp280 - 285 Georg E. Fantner, Roberto J. Barbero, David S. Gray & Angela M. Belcher doi:10.1038/nnano.2010.29 High-speed atomic force microscopy imaging in liquid reveals the variability of the onset of cell death induced by antimicrobial peptides on a cell-by-cell basis. Abstract - Kinetics of antimicrobial peptide activity measured on individual bacterial cells using high-speed atomic force microscopy | Full Text - Kinetics of antimicrobial peptide activity measured on individual bacterial cells using high-speed atomic force microscopy | PDF (950 KB) - Kinetics of antimicrobial peptide activity measured on individual bacterial cells using high-speed atomic force microscopy | Supplementary information Subject Categories: Nanometrology and instrumentation | Surface patterning and imaging Identifying single nucleotides by tunnelling current - pp286 - 290 Makusu Tsutsui, Masateru Taniguchi, Kazumichi Yokota & Tomoji Kawai doi:10.1038/nnano.2010.42 Adjustable nanoelectrodes have been used to measure tunnelling currents through single nucleotides, and could form the basis of a new approach to DNA sequencing. Abstract - Identifying single nucleotides by tunnelling current | Full Text - Identifying single nucleotides by tunnelling current | PDF (1,180 KB) - Identifying single nucleotides by tunnelling current | Supplementary information Subject Categories: Electronic properties and devices | Nanobiotechnology See also:News and Views by Thundat Three-dimensional tissue culture based on magnetic cell levitation - pp291 - 296 Glauco R. Souza, Jennifer R. Molina, Robert M. Raphael, Michael G. Ozawa, Daniel J. Stark, Carly S. Levin, Lawrence F. Bronk, Jeyarama S. Ananta, Jami Mandelin, Maria-Magdalena Georgescu, James A. Bankson, Juri G. Gelovani, T. C. Killian, Wadih Arap & Renata Pasqualini doi:10.1038/nnano.2010.23 Magnetic levitation of cells with a hydrogel containing magnetic nanoparticles forms a three-dimensional tissue culture suited for various multicellular studies. Abstract - Three-dimensional tissue culture based on magnetic cell levitation | Full Text - Three-dimensional tissue culture based on magnetic cell levitation | PDF (953 KB) - Three-dimensional tissue culture based on magnetic cell levitation | Supplementary information Subject Categories: Nanomaterials | Nanomedicine Articles Direct seawater desalination by ion concentration polarization - pp297 - 301 Sung Jae Kim, Sung Hee Ko, Kwan Hyoung Kang & Jongyoon Han doi:10.1038/nnano.2010.34 Sea water can be separated into desalted and concentrated streams without using a membrane by creating an ion-depleted region near a nanojunction. Abstract - Direct seawater desalination by ion concentration polarization | Full Text - Direct seawater desalination by ion concentration polarization | PDF (550 KB) - Direct seawater desalination by ion concentration polarization | Supplementary information Subject Categories: Nanofluidics | Nanosensors and other devices See also:News and Views by Shannon Detection of single-molecule H2O2 signalling from epidermal growth factor receptor using fluorescent single-walled carbon nanotubes - pp302 - 309 Hong Jin, Daniel A. Heller, Marie Kalbacova, Jong-Ho Kim, Jingqing Zhang, Ardemis A. Boghossian, Narendra Maheshri & Michael S. Strano doi:10.1038/nnano.2010.24 Arrays of single-walled carbon nanotubes can detect hydrogen peroxide from live cells in real time, providing a new tool to understand signalling of reactive oxygen species in cells. Abstract - Detection of single-molecule H2O2 signalling from epidermal growth factor receptor using fluorescent single-walled carbon nanotubes | Full Text - Detection of single-molecule H2O2 signalling from epidermal growth factor receptor using fluorescent single-walled carbon nanotubes | PDF (2,032 KB) - Detection of single-molecule H2O2 signalling from epidermal growth factor receptor using fluorescent single-walled carbon nanotubes | Supplementary information Subject Category: Nanosensors and other devices Corrigendum Chemical methods for the production of graphenes - p309 Sungjin Park & Rodney S. Ruoff doi:10.1038/nnano.2010.69 Full Text - Chemical methods for the production of graphenes | PDF (88 KB) - Chemical methods for the production of graphenes
  • Block copolymers: With a little help from above
    Poelma JE Hawker CJ - Nature Nanotechnology 5(4):243-244 (2010)
    It is 20 years since researchers at IBM spelt out the name of their company with atoms. Chris Toumey looks at the story behind a landmark in nanotechnology.
  • Organic conductors: A dash of salt is superconducting
    Brooks JS - Nature Nanotechnology 5(4):244-245 (2010)
    ARTICLE NAVIGATION - ISSUE Previous April 2010, Volume 5 No 4 pp237-309 * Editorial * Thesis * Research Highlights * News and Views * Letters * Articles * CorrigendumAbout the cover Editorial A brief history of some landmark papers - p237 doi:10.1038/nnano.2010.80 Twenty years after spelling out IBM with atoms, the scanning tunnelling microscope is still going strong. Full Text - A brief history of some landmark papers | PDF (116 KB) - A brief history of some landmark papers Subject Categories: Nanometrology and instrumentation | Surface patterning and imaging Thesis 35 atoms that changed the nanoworld - pp239 - 241 Chris Toumey doi:10.1038/nnano.2010.61 It is 20 years since researchers at IBM spelt out the name of their company with atoms. looks at the story behind a landmark in nanotechnology. Full Text - 35 atoms that changed the nanoworld | PDF (527 KB) - 35 atoms that changed the nanoworld Subject Categories: Nanometrology and instrumentation | Surface patterning and imaging Research Highlights Our choice from the recent literature - p242 doi:10.1038/nnano.2010.73 Full Text - Our choice from the recent literature | PDF (131 KB) - Our choice from the recent literature News and Views Block copolymers: With a little help from above - pp243 - 244 Justin E. Poelma & Craig J. Hawker doi:10.1038/nnano.2010.60 Complex nanoscale patterns can be generated by combining the self-assembly of block-copolymer thin films with minimal top-down templating. Full Text - Block copolymersWith a little help from above | PDF (619 KB) - Block copolymersWith a little help from above Subject Categories: Molecular self-assembly | Surface patterning and imaging Organic conductors: A dash of salt is superconducting - pp244 - 245 James S. Brooks doi:10.1038/nnano.2010.63 In an experimental tour de force involving ultrahigh vacuum and low-temperature scanning probe techniques, researchers have created organic nanostructures that show evidence of unconventional superconductivity. Full Text - Organic conductorsA dash of salt is superconducting | PDF (236 KB) - Organic conductorsA dash of salt is superconducting Subject Categories: Electronic properties and devices | Surface patterning and imaging Nanomechanics: Welcome to the quantum ground state - p245 Peter Rodgers doi:10.1038/nnano.2010.70 Full Text - NanomechanicsWelcome to the quantum ground state | PDF (169 KB) - NanomechanicsWelcome to the quantum ground state Subject Categories: NEMS | Quantum information DNA sequencing: Read with quantum mechanics - pp246 - 247 Thomas Thundat doi:10.1038/nnano.2010.72 Electron tunnelling can be used to selectively identify the basic constituents of DNA, indicating that the approach could be used to efficiently read a DNA sequence. Full Text - DNA sequencingRead with quantum mechanics | PDF (202 KB) - DNA sequencingRead with quantum mechanics Subject Categories: Electronic properties and devices | Nanobiotechnology Self-healing materials: Get ready for repair-and-go - pp247 - 248 Scott R. White & Philippe H. Geubelle doi:10.1038/nnano.2010.66 Computer simulations have shown that hydrophobic nanoparticles encapsulated in a deformable shell can repair surfaces in a manner that is similar to the way white blood cells work in the body. Full Text - Self-healing materialsGet ready for repair-and-go | PDF (175 KB) - Self-healing materialsGet ready for repair-and-go Subject Categories: Nanomaterials | Synthesis and processing Water desalination: Fresh for less - pp248 - 250 Mark A. Shannon doi:10.1038/nnano.2010.71 Salt water can be separated into desalted and saltier streams by a nanochannel-based device that requires only low-voltage electricity. Full Text - Water desalinationFresh for less | PDF (165 KB) - Water desalinationFresh for less Subject Categories: Nanofluidics | Nanosensors and other devices Letters Polyethylene nanofibres with very high thermal conductivities - pp251 - 255 Sheng Shen, Asegun Henry, Jonathan Tong, Ruiting Zheng & Gang Chen doi:10.1038/nnano.2010.27 Ultradrawn polymer fibres with diameters of 50–500 nm and lengths up to tens of millimetres have been prepared, and found to show thermal conductivities as high as ~105 W m−1 K−1. Abstract - Polyethylene nanofibres with very high thermal conductivities | Full Text - Polyethylene nanofibres with very high thermal conductivities | PDF (514 KB) - Polyethylene nanofibres with very high thermal conductivities | Supplementary information Subject Categories: Nanomaterials | Structural properties Complex self-assembled patterns using sparse commensurate templates with locally varying motifs - pp256 - 260 Joel K. W. Yang, Yeon Sik Jung, Jae-Byum Chang, R. A. Mickiewicz, A. Alexander-Katz, C. A. Ross & Karl K. Berggren doi:10.1038/nnano.2010.30 Suitable distributions of vertical posts, prepared by electron-beam patterning of an inorganic resist, can be used to template complex patterns in a cylindrical block copolymer. Abstract - Complex self-assembled patterns using sparse commensurate templates with locally varying motifs | Full Text - Complex self-assembled patterns using sparse commensurate templates with locally varying motifs | PDF (3,341 KB) - Complex self-assembled patterns using sparse commensurate templates with locally varying motifs | Supplementary information Subject Categories: Molecular self-assembly | Surface patterning and imaging See also:News and Views by Poelma & Hawker Superconductivity in just four pairs of (BETS)2GaCl4 molecules - pp261 - 265 K. Clark, A. Hassanien, S. Khan, K.-F. Braun, H. Tanaka & S.-W. Hla doi:10.1038/nnano.2010.41 Real-space scanning tunnelling spectroscopy has provided new insights into the properties of a well-known two-dimensional organic superconductor, including a superconducting gap that increases exponentially with the length of the molecular chain. Abstract - Superconductivity in just four pairs of (BETS)2GaCl4 molecules | Full Text - Superconductivity in just four pairs of (BETS)2GaCl4 molecules | PDF (770 KB) - Superconductivity in just four pairs of (BETS)2GaCl4 molecules | Supplementary information Subject Categories: Electronic properties and devices | Surface patterning and imaging See also:News and Views by Brooks Proposal for an all-spin logic device with built-in memory - pp266 - 270 Behtash Behin-Aein, Deepanjan Datta, Sayeef Salahuddin & Supriyo Datta doi:10.1038/nnano.2010.31 A spintronic device in which the input, output and internal states are all represented by spin, and that shows the five essential characteristics necessary for logic applications, is proposed. Abstract - Proposal for an all-spin logic device with built-in memory | Full Text - Proposal for an all-spin logic device with built-in memory | PDF (477 KB) - Proposal for an all-spin logic device with built-in memory | Supplementary information Subject Categories: Computational nanotechnology | Electronic properties and devices | Nanomagnetism and spintronics One-to-one comparison of sunscreen efficacy, aesthetics and potential nanotoxicity - pp271 - 274 Amanda S. Barnard doi:10.1038/nnano.2010.25 Theoretical simulation predicts that unless very small nanoparticles are shown to be safe, there is no combination of nanoparticle size and concentration that will deliver optimal sun protection while being safe and aesthetically appealing. Abstract - One-to-one comparison of sunscreen efficacy, aesthetics and potential nanotoxicity | Full Text - One-to-one comparison of sunscreen efficacy, aesthetics and potential nanotoxicity | PDF (403 KB) - One-to-one comparison of sunscreen efficacy, aesthetics and potential nanotoxicity | Supplementary information Subject Category: Environmental, health and safety issues Lipid multilayer gratings - pp275 - 279 Steven Lenhert, Falko Brinkmann, Thomas Laue, Stefan Walheim, Christoph Vannahme, Soenke Klinkhammer, Miao Xu, Sylwia Sekula, Timo Mappes, Thomas Schimmel & Harald Fuchs doi:10.1038/nnano.2010.17 Diffraction gratings composed of lipid multilayers can be fabricated by dip-pen nanolithography and used for label-free biosensing. Abstract - Lipid multilayer gratings | Full Text - Lipid multilayer gratings | PDF (702 KB) - Lipid multilayer gratings | Supplementary information Subject Categories: Nanosensors and other devices | Photonic structures and devices Kinetics of antimicrobial peptide activity measured on individual bacterial cells using high-speed atomic force microscopy - pp280 - 285 Georg E. Fantner, Roberto J. Barbero, David S. Gray & Angela M. Belcher doi:10.1038/nnano.2010.29 High-speed atomic force microscopy imaging in liquid reveals the variability of the onset of cell death induced by antimicrobial peptides on a cell-by-cell basis. Abstract - Kinetics of antimicrobial peptide activity measured on individual bacterial cells using high-speed atomic force microscopy | Full Text - Kinetics of antimicrobial peptide activity measured on individual bacterial cells using high-speed atomic force microscopy | PDF (950 KB) - Kinetics of antimicrobial peptide activity measured on individual bacterial cells using high-speed atomic force microscopy | Supplementary information Subject Categories: Nanometrology and instrumentation | Surface patterning and imaging Identifying single nucleotides by tunnelling current - pp286 - 290 Makusu Tsutsui, Masateru Taniguchi, Kazumichi Yokota & Tomoji Kawai doi:10.1038/nnano.2010.42 Adjustable nanoelectrodes have been used to measure tunnelling currents through single nucleotides, and could form the basis of a new approach to DNA sequencing. Abstract - Identifying single nucleotides by tunnelling current | Full Text - Identifying single nucleotides by tunnelling current | PDF (1,180 KB) - Identifying single nucleotides by tunnelling current | Supplementary information Subject Categories: Electronic properties and devices | Nanobiotechnology See also:News and Views by Thundat Three-dimensional tissue culture based on magnetic cell levitation - pp291 - 296 Glauco R. Souza, Jennifer R. Molina, Robert M. Raphael, Michael G. Ozawa, Daniel J. Stark, Carly S. Levin, Lawrence F. Bronk, Jeyarama S. Ananta, Jami Mandelin, Maria-Magdalena Georgescu, James A. Bankson, Juri G. Gelovani, T. C. Killian, Wadih Arap & Renata Pasqualini doi:10.1038/nnano.2010.23 Magnetic levitation of cells with a hydrogel containing magnetic nanoparticles forms a three-dimensional tissue culture suited for various multicellular studies. Abstract - Three-dimensional tissue culture based on magnetic cell levitation | Full Text - Three-dimensional tissue culture based on magnetic cell levitation | PDF (953 KB) - Three-dimensional tissue culture based on magnetic cell levitation | Supplementary information Subject Categories: Nanomaterials | Nanomedicine Articles Direct seawater desalination by ion concentration polarization - pp297 - 301 Sung Jae Kim, Sung Hee Ko, Kwan Hyoung Kang & Jongyoon Han doi:10.1038/nnano.2010.34 Sea water can be separated into desalted and concentrated streams without using a membrane by creating an ion-depleted region near a nanojunction. Abstract - Direct seawater desalination by ion concentration polarization | Full Text - Direct seawater desalination by ion concentration polarization | PDF (550 KB) - Direct seawater desalination by ion concentration polarization | Supplementary information Subject Categories: Nanofluidics | Nanosensors and other devices See also:News and Views by Shannon Detection of single-molecule H2O2 signalling from epidermal growth factor receptor using fluorescent single-walled carbon nanotubes - pp302 - 309 Hong Jin, Daniel A. Heller, Marie Kalbacova, Jong-Ho Kim, Jingqing Zhang, Ardemis A. Boghossian, Narendra Maheshri & Michael S. Strano doi:10.1038/nnano.2010.24 Arrays of single-walled carbon nanotubes can detect hydrogen peroxide from live cells in real time, providing a new tool to understand signalling of reactive oxygen species in cells. Abstract - Detection of single-molecule H2O2 signalling from epidermal growth factor receptor using fluorescent single-walled carbon nanotubes | Full Text - Detection of single-molecule H2O2 signalling from epidermal growth factor receptor using fluorescent single-walled carbon nanotubes | PDF (2,032 KB) - Detection of single-molecule H2O2 signalling from epidermal growth factor receptor using fluorescent single-walled carbon nanotubes | Supplementary information Subject Category: Nanosensors and other devices Corrigendum Chemical methods for the production of graphenes - p309 Sungjin Park & Rodney S. Ruoff doi:10.1038/nnano.2010.69 Full Text - Chemical methods for the production of graphenes | PDF (88 KB) - Chemical methods for the production of graphenes
  • Nanomechanics: Welcome to the quantum ground state
    Rodgers P - Nature Nanotechnology 5(4):245 (2010)
    Interfaces: Flexible repellent Electron microscopy: Learning more about atoms Quantum dots: Another barrier Nanowires: On the dot
  • DNA sequencing: Read with quantum mechanics
    Thundat T - Nature Nanotechnology 5(4):246-247 (2010)
    Complex nanoscale patterns can be generated by combining the self-assembly of block-copolymer thin films with minimal top-down templating.
  • Self-healing materials: Get ready for repair-and-go
    White SR Geubelle PH - Nature Nanotechnology 5(4):247-248 (2010)
    In an experimental tour de force involving ultrahigh vacuum and low-temperature scanning probe techniques, researchers have created organic nanostructures that show evidence of unconventional superconductivity.
  • Water desalination: Fresh for less
    Shannon MA - Nature Nanotechnology 5(4):248-250 (2010)
    A mechanical device has been cooled into its quantum ground state for the first time in a landmark experiment that could shed new light on the boundary between quantum and classical mechanics. Andrew Cleland and co-workers at the University of California at Santa Barbara (UCSB) cooled a mechanical oscillator to a temperature of 25 mK with a dilution refrigerator, and then used a superconducting quantum bit (qubit) to measure the quantum state of the device.
  • Polyethylene nanofibres with very high thermal conductivities
    Shen S Henry A Tong J Zheng R Chen G - Nature Nanotechnology 5(4):251-255 (2010)
    Electron tunnelling can be used to selectively identify the basic constituents of DNA, indicating that the approach could be used to efficiently read a DNA sequence.
  • Complex self-assembled patterns using sparse commensurate templates with locally varying motifs
    Yang JK Jung YS Chang JB Mickiewicz RA Alexander-Katz A Ross CA Berggren KK - Nature Nanotechnology 5(4):256-260 (2010)
    Computer simulations have shown that hydrophobic nanoparticles encapsulated in a deformable shell can repair surfaces in a manner that is similar to the way white blood cells work in the body.
  • Superconductivity in just four pairs of (BETS)2GaCl4 molecules
    Clark K Hassanien A Khan S Braun KF Tanaka H Hla SW - Nature Nanotechnology 5(4):261-265 (2010)
    Salt water can be separated into desalted and saltier streams by a nanochannel-based device that requires only low-voltage electricity.
  • Proposal for an all-spin logic device with built-in memory
    Behin-Aein B Datta D Salahuddin S Datta S - Nature Nanotechnology 5(4):266-270 (2010)
    Bulk polymers are generally regarded as thermal insulators, and typically have thermal conductivities on the order of 0.1 W m−1 K−1 (ref. 1). However, recent work2, 3, 4 suggests that individual chains of polyethylene—the simplest and most widely used polymer—can have extremely high thermal conductivity. Practical applications of these polymers may also require that the individual chains form fibres or films. Here, we report the fabrication of high-quality ultra-drawn polyethylene nanofibres with diameters of 50–500 nm and lengths up to tens of millimetres. The thermal conductivity of the nanofibres was found to be as high as ~104 W m−1 K−1, which is larger than the conductivities of about half of the pure metals. The high thermal conductivity is attributed to the restructuring of the polymer chains by stretching, which improves the fibre quality toward an 'ideal' single crystalline fibre. Such thermally conductive polymers are potentially useful as h! eat spreaders and could supplement conventional metallic heat-transfer materials, which are used in applications such as solar hot-water collectors, heat exchangers and electronic packaging.
  • One-to-one comparison of sunscreen efficacy, aesthetics and potential nanotoxicity
    Barnard AS - Nature Nanotechnology 5(4):271-274 (2010)
    How small can a sample of superconducting material be and still display superconductivity? This question is relevant to our fundamental understanding of superconductivity, and also to applications in nanoscale electronics, because Joule heating of interconnecting wires is a major problem in nanoscale devices. It has been shown that ultrathin layers of metal can display superconductivity1, 2, 3, but any limits on the size of superconducting systems remain a mystery. (BETS)2GaCl4, where BETS is bis(ethylenedithio)tetraselenafulvalene, is an organic superconductor, and in bulk it has a superconducting transition temperature Tc of ~8 K (ref. 4) and a two-dimensional layered structure5, 6, 7 that is reminiscent of the high-Tc cuprate superconductors8, 9. Here, we use scanning tunnelling spectroscopy to show that a single layer of (BETS)2GaCl4 molecules on an Ag(111) surface displays a superconducting gap that increases exponentially with the length of the molecular chain. M! oreover, we show that a superconducting gap can still be detected for just four pairs of (BETS)2GaCl4 molecules. Real-space spectroscopic images directly visualize the chains of BETS molecules as the origin of the superconductivity.
  • Lipid multilayer gratings
    Lenhert S Brinkmann F Laue T Walheim S Vannahme C Klinkhammer S Xu M Sekula S Mappes T Schimmel T Fuchs H - Nature Nanotechnology 5(4):275-279 (2010)
    From the following article Polyethylene nanofibres with very high thermal conductivities Sheng Shen, Asegun Henry, Jonathan Tong, Ruiting Zheng & Gang Chen Nature Nanotechnology 5, 251 - 255 (2010) Published online: 7 March 2010 doi:10.1038/nnano.2010.27 BACK TO ARTICLE Download plugins and applications Supplementary information Supplementary information Supplementary information - Download PDF file (1,174 KB) BACK TO ARTICLE DOWNLOAD PLUGINS FOR YOUR BROWSER Movie files * QuickTime Player (PC or Mac) * Realplayer (PC or Mac) * Windows Media player (PC only) PDF douments * Adobe Acrobat Reader (PC or Mac) Text documents * Textpad (PC only) * SimpleText (Mac only) PostScript documents * GhostView (Mac and PC) Flash movies * Macromedia Flash Player Audio files * Apple iTunes (PC or Mac) * QuickTime Player (PC or Mac) * Realplayer (PC or Mac) * Windows Media player (PC only) Chemical structures * MDL Chime Microarray * Treeview Compressed Stuff files * StuffIt Expander Compressed Zip files * WinZip (PC only) Systems Biology Markup Language files (SBML) * More information about SMBL Chemical Markup language files (CML) * More information about CML BACK TO ARTICLE
  • Kinetics of antimicrobial peptide activity measured on individual bacterial cells using high-speed atomic force microscopy
    Fantner GE Barbero RJ Gray DS Belcher AM - Nature Nanotechnology 5(4):280-285 (2010)
    Numerous reports have described the superior properties of nanoparticles and their diverse range of applications. Issues of toxicity1, 2, workplace safety3, 4 and environmental impact5, 6, 7, 8, 9 have also been a concern. Here we show a theoretical comparison of how the size of titanium dioxide nanoparticles and their concentration in sunscreens can affect efficacy, aesthetics and potential toxicity from free radical production. The simulation results reveal that, unless very small nanoparticles can be shown to be safe, there is no combination of particle size and concentration that will deliver optimal performance in terms of sun protection and aesthetics. Such a theoretical method complements well the experimental approach for identifying these characteristics.
  • Identifying single nucleotides by tunnelling current
    Tsutsui M Taniguchi M Yokota K Kawai T - Nature Nanotechnology 5(4):286-290 (2010)
    The interaction of electromagnetic waves with matter can be controlled by structuring the matter on the scale of the wavelength of light, and various photonic components have been made by structuring materials using top-down or bottom-up approaches1, 2, 3, 4, 5. Dip-pen nanolithography is a scanning-probe-based fabrication technique that can be used to deposit materials on surfaces with high resolution and, when carried out in parallel, with high throughput6, 7, 8. Here, we show that lyotropic optical diffraction gratings—composed of biofunctional lipid multilayers with controllable heights between ~5 and 100 nm—can be fabricated by lipid dip-pen nanolithography. Multiple materials can be simultaneously written into arbitrary patterns on pre-structured surfaces to generate complex structures and devices, allowing nanostructures to be interfaced by combinations of top-down and bottom-up fabrication methods. We also show that fluid and biocompatible lipid multilayer ! gratings allow label-free and specific detection of lipid–protein interactions in solution. This biosensing capability takes advantage of the adhesion properties of the phospholipid superstructures and the changes in the size and shape of the grating elements that take place in response to analyte binding.
  • Three-dimensional tissue culture based on magnetic cell levitation
    Souza GR Molina JR Raphael RM Ozawa MG Stark DJ Levin CS Bronk LF Ananta JS Mandelin J Georgescu MM Bankson JA Gelovani JG Killian TC Arap W Pasqualini R - Nature Nanotechnology 5(4):291-296 (2010)
    From the following article One-to-one comparison of sunscreen efficacy, aesthetics and potential nanotoxicity Amanda S. Barnard Nature Nanotechnology 5, 271 - 274 (2010) Published online: 7 March 2010 doi:10.1038/nnano.2010.25 BACK TO ARTICLE Download plugins and applications Supplementary information Supplementary information Supplementary information - Download PDF file (458 KB) BACK TO ARTICLE DOWNLOAD PLUGINS FOR YOUR BROWSER Movie files * QuickTime Player (PC or Mac) * Realplayer (PC or Mac) * Windows Media player (PC only) PDF douments * Adobe Acrobat Reader (PC or Mac) Text documents * Textpad (PC only) * SimpleText (Mac only) PostScript documents * GhostView (Mac and PC) Flash movies * Macromedia Flash Player Audio files * Apple iTunes (PC or Mac) * QuickTime Player (PC or Mac) * Realplayer (PC or Mac) * Windows Media player (PC only) Chemical structures * MDL Chime Microarray * Treeview Compressed Stuff files * StuffIt Expander Compressed Zip files * WinZip (PC only) Systems Biology Markup Language files (SBML) * More information about SMBL Chemical Markup language files (CML) * More information about CML BACK TO ARTICLE
  • Direct seawater desalination by ion concentration polarization
    Kim SJ Ko SH Kang KH Han J - Nature Nanotechnology 5(4):297-301 (2010)
    A major goal in medical research is to develop a DNA sequencing technique that is capable of reading an entire human genome at low cost1, 2, 3, 4. Recently, it was proposed that DNA sequencing could be performed by measuring the electron transport properties of the individual nucleotides in a DNA molecule5. Here, we report electrical detection of single nucleotides using two configurable nanoelectrodes and show that electron transport through single nucleotides occurs by tunnelling. We also demonstrate statistical identification of the nucleotides based on their electrical conductivity, thereby providing an experimental basis for a DNA sequencing technology based on measurements of electron transport.
  • Detection of single-molecule H2O2 signalling from epidermal growth factor receptor using fluorescent single-walled carbon nanotubes
    Jin H Heller DA Kalbacova M Kim JH Zhang J Boghossian AA Maheshri N Strano MS - Nature Nanotechnology 5(4):302-309 (2010)
    Cell culture is an essential tool in drug discovery, tissue engineering and stem cell research. Conventional tissue culture produces two-dimensional cell growth with gene expression, signalling and morphology that can be different from those found in vivo, and this compromises its clinical relevance1, 2, 3, 4, 5. Here, we report a three-dimensional tissue culture based on magnetic levitation of cells in the presence of a hydrogel consisting of gold, magnetic iron oxide nanoparticles and filamentous bacteriophage. By spatially controlling the magnetic field, the geometry of the cell mass can be manipulated, and multicellular clustering of different cell types in co-culture can be achieved. Magnetically levitated human glioblastoma cells showed similar protein expression profiles to those observed in human tumour xenografts. Taken together, these results indicate that levitated three-dimensional culture with magnetized phage-based hydrogels more closely recapitulates in ! vivo protein expression and may be more feasible for long-term multicellular studies.
  • Chemical methods for the production of graphenes
    Park S Ruoff RS - Nature Nanotechnology 5(4):309 (2010)
    From the following article Identifying single nucleotides by tunnelling current Makusu Tsutsui, Masateru Taniguchi, Kazumichi Yokota & Tomoji Kawai Nature Nanotechnology 5, 286 - 290 (2010) Published online: 21 March 2010 doi:10.1038/nnano.2010.42 BACK TO ARTICLE Download plugins and applications Supplementary information Supplementary information Supplementary information - Download PDF file (879 KB) BACK TO ARTICLE DOWNLOAD PLUGINS FOR YOUR BROWSER Movie files * QuickTime Player (PC or Mac) * Realplayer (PC or Mac) * Windows Media player (PC only) PDF douments * Adobe Acrobat Reader (PC or Mac) Text documents * Textpad (PC only) * SimpleText (Mac only) PostScript documents * GhostView (Mac and PC) Flash movies * Macromedia Flash Player Audio files * Apple iTunes (PC or Mac) * QuickTime Player (PC or Mac) * Realplayer (PC or Mac) * Windows Media player (PC only) Chemical structures * MDL Chime Microarray * Treeview Compressed Stuff files * StuffIt Expander Compressed Zip files * WinZip (PC only) Systems Biology Markup Language files (SBML) * More information about SMBL Chemical Markup language files (CML) * More information about CML BACK TO ARTICLE

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