Now showing items 1-20 of 20

    • Atomic Layer Deposition to Fine-Tune the Surface Properties and Diameters of Fabricated Nanopores 

      Chen, Peng; Mitsui, Toshiyuki; Farmer, Damon B.; Golovchenko, Jene; Gordon, Roy; Branton, Daniel (American Chemical Society, 2004)
      Atomic layer deposition of alumina enhanced the molecule sensing characteristics of fabricated nanopores by fine-tuning their surface properties, reducing 1/f noise, neutralizing surface charge to favor capture of DNA and ...
    • Base Dependent DNA-carbon Nanotube Interactions: Activation Enthalpies and Assembly-disassembly Control 

      Albertorio, Fernando; Hughes, Mary E.; Golovchenko, Jene A.; Branton, Daniel (Institute of Physics, 2009)
      We quantify the base dependent interactions between single stranded DNA and single walled carbon nanotubes (SWNTs) in solution. DNA/SWNT hybrids hold the promise of applications ranging from nanoscale electronics and ...
    • Characterization of Individual Polynucleotide Molecules Using a Membrane Channel 

      Kasianowicz, John J.; Brandin, Eric; Branton, Daniel; Deamer, David W. (National Academy of Sciences of the United States of America, 1996)
      We show that an electric field can drive single-stranded RNA and DNA molecules through a 2.6-nm diameter ion channel in a lipid bilayer membrane. Because the channel diameter can accommodate only a single strand of RNA or ...
    • Characterization of Nucleic Acids by Nanopore Analysis 

      Deamer, David W.; Branton, Daniel (American Chemical Society, 2002)
      Single-stranded DNA and RNA molecules in solution can be driven through a nanoscopic pore by an applied electric field. As each molecule occupies the pore, a characteristic blockade of ionic current is produced. Information ...
    • Embedding a Carbon Nanotube across the Diameter of a Solid State Nanopore 

      Sadki, El-Hadi S.; Garaj, Slaven; Vlassarev, Dimitar Mihaylov; Golovchenko, Jene A.; Branton, Daniel (American Vacuum Society, 2011)
      A fabrication method for positioning and embedding a single-walled carbon nanotube (SWNT) across the diameter of a solid state nanopore is presented. Chemical vapor deposition (CVD) is used to grow SWNTs over arrays of ...
    • Focused Ion Beam Induced Deflections of Freestanding Thin Films 

      Kim, Young-Rok; Chen, Peng-Chieh; Aziz, Michael; Branton, Daniel; Vlassak, Joost (American Institute of Physics, 2006)
      Prominent deflections are shown to occur in freestanding silicon nitride thin membranes when exposed to a 50 keV gallium focused ion beam for ion doses between 10<sup>14</sup> and 10<sup>17</sup> ions/cm<sup>2</sup>. Atomic ...
    • Graphene as a Sub-Nanometer Trans-Electrode Membrane 

      Garaj, Slaven; Hubbard, William A; Reina, A.; Branton, Daniel; Golovchenko, Jene A. (Nature Publishing Group, 2010)
      Isolated, atomically thin conducting membranes of graphite, called graphene, have recently been the subject of intense research with the hope that practical applications in fields ranging from electronics to energy science ...
    • Ice Lithography for Nano-Devices 

      Branton, Daniel; Han, Anpan; Vlassarev, Dimitar Mihaylov; Wang, Jenny Yingzi; Golovchenko, Jene A. (American Chemical Society, 2010)
      We report the successful application of a new approach, ice lithography (IL), to fabricate nanoscale devices. The entire IL process takes place inside a modified scanning electron microscope (SEM), where a vapor-deposited ...
    • An Ice Lithography Instrument 

      Han, Anpan; Chervinsky, John F.; Branton, Daniel; Golovchenko, Jene A. (American Institute of Physics, 2011)
      We describe the design of an instrument that can fully implement a new nanopatterning method called ice lithography, where ice is used as the resist. Water vapor is introduced into a scanning electron microscope (SEM) ...
    • An Investigation of the Interaction Between Graphene and Hydrated Ions 

      Dressen, Donald George (2016-05-17)
      The ability of graphene and carbon nanotubes to generate an electric potential from flowing fluids has attracted much interest. The effect is thought to occur because certain ionic and molecular species bind to the surface ...
    • Ion-beam Sculpting at Nanometre Length Scales 

      Li, Jiali; Stein, Derek; McMullan, Ciaran; Branton, Daniel; Aziz, Michael; Golovchenko, Jene (Nature Publishing Group, 2001)
      Manipulating matter at the nanometre scale is important for many electronic, chemical and biological advances, but present solid-state fabrication methods do not reproducibly achieve dimensional control at the nanometre ...
    • Molecule-hugging graphene nanopores 

      Garaj, S; Liu, Song; Golovchenko, Jene Andrew; Branton, Daniel (Proceedings of the National Academy of Sciences, 2013)
      It has recently been recognized that solid-state nanopores in single-atomic-layer graphene membranes can be used to electronically detect and characterize single long charged polymer molecules. We have now fabricated ...
    • Nanometer Patterning with Ice 

      King, Gavin M.; Schurmann, Gregor; Branton, Daniel; Golovchenko, Jene (American Chemical Society, 2005)
      Nanostructures can be patterned with focused electron or ion beams in thin, stable, conformal films of water ice grown on silicon. We use these patterns to reliably fabricate sub-20 nm wide metal lines and exceptionally ...
    • Nanopatterning on Nonplanar and Fragile Substrates with Ice Resists 

      Han, Anpan; Kuan, Aaron Tzeyang; Golovchenko, Jene A.; Branton, Daniel (American Chemical Society, 2012)
      Electron beam (e-beam) lithography using polymer resists is an important technology that provides the spatial resolution needed for nanodevice fabrication. But it is often desirable to pattern nonplanar structures on which ...
    • The Potential and Challenges of Nanopore Sequencing 

      Branton, Daniel; Pershin, Yuriy V; Deamer, David W; Ling, Xinsheng Sean; Wiggin, Matthew; Lindsay, Stuart; Krstic, Predrag S; Huang, Xiaohua; Jovanovich, Stevan B; Butler, Thomas; Soni, Gautam V; Schloss, Jeffery A; Riehn, Robert; Hibbs, Andrew; Tabard-Cossa, Vincent; Wanunu, Meni; Bayley, Hagan; Marziali, Andre; Ramsey, J Michael; Mastrangelo, Carlos H; Meller, Amit; Benner, Steven A; Oliver, John S; Garaj, Slaven; Di Ventra, Massimiliano (Macmillian Publishers Ltd., 2008)
      A nanopore-based device provides single-molecule detection and analytical capabilities that are achieved by electrophoretically driving molecules in solution through a nano-scale pore. The nanopore provides a highly confined ...
    • Probing Single DNA Molecule Transport Using Fabricated Nanopores 

      Chen, Peng; Gu, Jiajun; Brandin, Eric; Kim, Young-Rok; Wang, Qiaoqiao; Branton, Daniel (American Chemical Society, 2004)
      Nanopores can serve as high throughput, single-molecule sensing devices that provide insight into the distribution of static and dynamic molecular activities, properties, or interactions. We have studied double stranded ...
    • Rapid nanopore discrimination between single polynucleotide molecules 

      Meller, A.; Nivon, L; Brandin, Eric Richard; Golovchenko, Jene Andrew; Branton, Daniel (Proceedings of the National Academy of Sciences, 2000)
      A variety of different DNA polymers were electrophoretically driven through the nanopore of an α-hemolysin channel in a lipid bilayer. Single-channel recording of the translocation duration and current flow during traversal ...
    • Unzipping Kinetics of Double-Stranded DNA in a Nanopore 

      Sauer-Budge, Alexis F.; Nyamwanda, Jacqueline A.; Lubensky, David K.; Branton, Daniel (American Physical Society, 2003)
      We studied the unzipping of single molecules of double-stranded DNA by pulling one of their two strands through a narrow protein pore. Polymerase chain reaction analysis yielded the first direct proof of DNA unzipping in ...
    • Using Nanopores to Discriminate Between Single Molecules of DNA 

      Branton, Daniel; Meller, Amit (Kluwer Academic Publishers, 2002)
    • Voltage-Driven DNA Translocations through a Nanopore 

      Meller, Amit; Nivon, Lucas; Branton, Daniel (American Physical Society, 2001)
      We measure current blockade and time distributions for single-stranded DNA polymers during voltage-driven translocations through a single α-hemolysin pore. We use these data to determine the velocity of the polymers in the ...