Browsing by Author "Barber, Jabulani Randall"

Now showing items 1-9 of 9

    • Charge Transport and Rectification in Arrays of SAM-Based Tunneling Junctions 

      Nijhuis, Christian A.; Reus, William F.; Barber, Jabulani Randall; Dickey, Michael D.; Whitesides, George M. (American Chemical Society, 2010)
      This paper describes a method of fabrication that generates small arrays of tunneling junctions based on self-assembled monolayers (SAMs); these junctions have liquid-metal top-electrodes stabilized in microchannels and ...

    • Comparison of SAM-Based Junctions with Ga2O3/EGaIn Top Electrodes to Other Large-Area Tunneling Junctions 

      Nijhuis, Christian A.; Reus, William F.; Barber, Jabulani Randall; Whitesides, George M. (American Chemical Society, 2012)
      This paper compares the J(V) characteristics obtained for self-assembled monolayer (SAM)-based tunneling junctions with top electrodes of the liquid eutectic of gallium and indium (EGaIn) fabricated using two different ...

    • Defining the Value of Injection Current and Effective Electrical Contact Area for EGaIn-Based Molecular Tunneling Junctions 

      Simeone, Felice Carlo; Yoon, Hyo Jae; Thuo, Martin M.; Barber, Jabulani Randall; Smith, Barbara; Whitesides, George McClelland (American Chemical Society, 2013)
      Analysis of rates of tunneling across self-assembled monolayers (SAMs) of n-alkanethiolates SCn (with n = number of carbon atoms) incorporated in junctions having structure AgTS-SAM//Ga2O3/EGaIn leads to a value for the ...

    • The Electrical Resistance of AgTS-S(CH2)n-1CH3//Ga2O3/EGaIn Tunneling Junctions 

      Cademartiri, Ludovico; Thuo, Martin M.; Nijhuis, Christian A.; Reus, William F.; Tricard, Simon; Barber, Jabulani Randall; Sodhi, Rana N. S.; Brodersen, Peter; Kim, Choongik; Chiechi, Ryan C.; Whitesides, George M. (American Chemical Society (ACS), 2012)
      Tunneling junctions having the structure AgTS–S(CH2)n−1CH3//Ga2O3/EGaIn allow physical–organic studies of charge transport across self-assembled monolayers (SAMs). In ambient conditions, the surface of the liquid metal ...

    • Fabrication of Low-Cost Paper-Based Microfluidic Devices by Embossing or Cut-and-Stack Methods 

      Thuo, Martin M.; Martinez, Ramses; Lan, Wen-Jie; Liu, Xinyu; Barber, Jabulani; Atkinson, Manza B. J.; Bandarage, Dineth; Bloch, Jean-Francis; Whitesides, George McClelland (American Chemical Society (ACS), 2014)
      This communication describes the use of embossing, and “cut-and-stack” methods of assembly, to generate microfluidic devices from omniphobic paper, and demonstrates that fluid flowing through these devices behaves similarly ...

    • Influence of Environment on the Measurement of Rates of Charge Transport across Ag TS /SAM//Ga 2 O 3 /EGaIn Junctions 

      Barber, Jabulani; Yoon, Hyo; Bowers, Carleen Morris; Thuo, Martin M.; Breiten, Benjamin; Gooding, Diana M.; Whitesides, George McClelland (American Chemical Society (ACS), 2014)
      This paper investigates the influence of the atmosphere used in the fabrication of top electrodes from the liquid eutectic of gallium and indium (EGaIn) (the so-called “EGaIn” electrodes), and in measurements of current ...

    • Odd−Even Effects in Charge Transport across Self-Assembled Monolayers 

      Thuo, Martin M.; Reus, William F.; Nijhuis, Christian A.; Barber, Jabulani Randall; Kim, Choongik; Schulz, Michael D.; Whitesides, George McClelland (American Chemical Society (ACS), 2011)
      This paper compares charge transport across self-assembled monolayers (SAMs) of n-alkanethiols containing odd and even numbers of methylenes. Ultraflat template-stripped silver (AgTS) surfaces support the SAMs, while top ...

    • Statistical Tools for Analyzing Measurements of Charge Transport 

      Reus, William F.; Nijhuis, Christian A.; Barber, Jabulani Randall; Thuo, Martin M.; Tricard, Simon; Whitesides, George M. (American Chemical Society, 2012)
      This paper applies statistical methods to analyze the large, noisy data sets produced in measurements of tunneling current density (J) through self-assembled monolayers (SAMs) in large-area junctions. It describes and ...

    • Using Explosions to Power a Soft Robot 

      Shepherd, Robert F.; Stokes, Adam A.; Freake, Jacob; Barber, Jabulani Randall; Snyder, Phillip W.; Mazzeo, Aaron D.; Cademartiri, Ludovico; Morin, Stephen A.; Whitesides, George McClelland (Wiley-Blackwell, 2013)
      This manuscript describes the use of explosions to power a soft robot—one composed solely of organic elastomers (e.g., silicones). The robot has three pneumatic actuators (pneu-nets) in a tripedal configuration. Explosion ...