Recent Submissions

  • Exciton diamagnetic shifts and valley Zeeman effects in monolayer WS2 and MoS2 to 65 Tesla 

    Stier, Andreas V.; McCreary, Kathleen M.; Jonker, Berend T.; Kono, Junichiro; Crooker, Scott A. (2016)
    In bulk and quantum-confined semiconductors, magneto-optical studies have historically played an essential role in determining the fundamental parameters of excitons (size, binding energy, spin, dimensionality and so on). ...
  • Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites 

    Kim, Hojin; Zhu, Bohan; Chen, Huiying; Adetiba, Oluwatomiyin; Agrawal, Aditya; Ajayan, Pulickel; Jacot, Jeffrey G.; Verduzco, Rafael (2016)
    LCEs are shape-responsive materials with fully reversible shape change and potential applications in medicine, tissue engineering, artificial muscles, and as soft robots. Here, we demonstrate the preparation of shape-responsive ...
  • High-Performance Hydrogen Evolution from MoS2(1–x)P x Solid Solution 

    Ye, Ruquan; Vicente, Paz Del Angel; Liu, Yuanyue; Arellano-Jimenez, Josefina; Peng, Zhiwei; Wang, Tuo; Li, Yilun; Yakobson, Boris I.; Wei, Su-Huai; Yacaman, Miguel Jose; Tour, James M. (2016)
    A MoS2(1-x)Px solid solution (x = 0 to 1) is formed by thermally annealing mixtures of MoS2 and red phosphorus. The effective and stable electrocatalyst for hydrogen evolution in acidic solution holds promise for replacing ...
  • Synthesis of High-Quality Graphene and Hexagonal Boron Nitride Monolayer In-Plane Heterostructure on Cu–Ni Alloy 

    Lu, Guangyuan; Wu, Tianru; Yang, Peng; Yang, Yingchao; Jin, Zehua; Chen, Weibing; Jia, Shuai; Wang, Haomin; Zhang, Guanhua; Sun, Julong; Ajayan, Pulickel M.; Lou, Jun; Xie, Xiaoming; Jiang, Mianheng (2017)
    Graphene/hexagonal boron nitride (h-BN) monolayer in-plane heterostructure offers a novel material platform for both fundamental research and device applications. To obtain such a heterostructure in high quality via ...
  • Carboxylation and Decarboxylation of Aluminum Oxide Nanoparticles Using Bifunctional Carboxylic Acids and Octylamine 

    Alexander, Shirin; Gomez, Virginia; Barron, Andrew R. (2016)
    The carboxylation of alumina nanoparticles (NPs), with bifunctional carboxylic acids, provides molecular anchors that are used for building more complexed structures via either physisorption or chemisorption. Colloidal ...
  • Toward Practical Non-Contact Optical Strain Sensing Using Single-Walled Carbon Nanotubes 

    Sun, Peng; Bachilo, Sergei M.; Nagarajaiah, Satish; Weisman, R. Bruce (2016)
    Progress is reported in an emerging non-contact strain sensing technology based on optical properties of single-walled carbon nanotubes (SWCNTs). In this strain-sensing smart skin (“S4”) method, nanotubes are dilutely ...
  • Defect-mediated transport and electronic irradiation effect in individual domains of CVD-grown monolayer MoS2 

    Durand, Corentin; Zhang, Xiaoguang; Fowlkes, Jason; Najmaei, Sina; Lou, Jun; Li, An-Ping (2015)
    The authors study the electrical transport properties of atomically thin individual crystalline grains of MoS2ᅠwith four-probeᅠscanning tunneling microscopy.ᅠTheᅠmonolayerᅠMoS2ᅠdomains are synthesized byᅠchemical vapor ...
  • Valley trion dynamics in monolayerᅠMoSe2 

    Gao, Feng; Gong, Yongji; Titze, Michael; Almeida, Raybel; Ajayan, Pulickel M.; Li, Hebin (2016)
    Charged excitons called trions play an important role in the fundamental valley dynamics in newly emerging two-dimensional semiconductor materials. We use ultrafast pump-probe spectroscopy to study the valley trion dynamics ...
  • Thermal conductivity enhancement of laser induced graphene foam upon P3HT infiltration 

    Smith, M.K.; Luong, D.X.; Bougher, T.L.; Kalaitzidou, K.; Tour, J.M.; Cola, B.A. (2016)
    Significant research has been dedicated to the exploration of high thermal conductivity polymer composite materials with conductive filler particles for use in heat transfer applications. However, poor particle dispersibility ...
  • Fluorinated graphene oxide for enhanced S and X-band microwave absorption 

    Sudeep, P.M.; Vinayasree, S.; Mohanan, P.; Ajayan, P.M.; Narayanan, T.N.; Anantharaman, M.R. (2015)
    Here we report the microwave absorbing properties of three graphene derivatives, namely, graphene oxide (GO), fluorinated GO (FGO, containing 5.6 at. % Fluorine (F)), and highly FGO (HFGO, containing 23 at. % F). FGO is ...
  • Optoelectronic crystal of artificial atoms in strain-textured molybdenum disulphide 

    Li, Hong; Contryman, Alex W.; Qian, Xiaofeng; Ardakani, Sina Moeini; Gong, Yongji; Wang, Xingli; Weisse, Jeffrey M.; Lee, Chi Hwan; Zhao, Jiheng; Ajayan, Pulickel M.; Li, Ju; Manoharan, Hari C.; Zheng, Xiaolin (2015)
    The isolation of the two-dimensional semiconductor molybdenum disulphide introduced a new optically active material possessing a band gap that can be facilely tuned via elastic strain. As an atomically thin membrane with ...
  • Intrinsic and extrinsic defects in a family of coal-derived graphene quantum dots 

    Singamaneni, Srinivasa Rao; van Tol, Johan; Ye, Ruquan; Tour, James M. (2015)
    In this letter, we report on the high frequency (239.2 and 336 GHz) electron spin resonance (ESR) studies performed on graphene quantum dots (GQDs), prepared through a wet chemistry route from three types of coal: (a) ...
  • Characterization of a novel MR-detectable nanoantioxidant that mitigates the recall immune response 

    Inoue, Taeko; Griffin, Deric M.; Huq, Redwan; Samuel, Errol L.G.; Ruano, Simone H.; Stinnett, Gary; Majid, Tabassum J.; Beeton, Christine; Tour, James M.; Pautler, Robia G. (2016)
    In many human diseases, the presence of inflammation is associated with an increase in the level of reactive oxygen species (ROS). The resulting state of oxidative stress is highly detrimental and can initiate a cascade ...
  • Probing low-density carriers in a single atomic layer using terahertz parallel-plate waveguides 

    Razanoelina, Manjakavahoaka; Bagsican, Filchito Renee; Kawayama, Iwao; Zhang, Xiang; Ma, Lulu; Murakami, Hironaru; Vajtai, Robert; Ajayan, Pulickel M.; Kono, Junichiro; Tonouchi, Masayoshi (2016)
    As novel classes of two-dimensional (2D) materials and heterostructures continue to emerge at an increasing pace, methods are being sought for elucidating their electronic properties rapidly, non-destructively, and ...
  • Teslaphoresis of Carbon Nanotubes 

    Bornhoeft, Lindsey R.; Castillo, Aida C.; Smalley, Preston R.; Kittrell, Carter; James, Dustin K.; Brinson, Bruce E.; Rybolt, Thomas R.; Johnson, Bruce R.; Cherukuri, Tonya K.; Cherukuri, Paul (2016)
    This paper introduces Teslaphoresis, the directed motion and self-assembly of matter by a Tesla coil, and studies this electrokinetic phenomenon using single-walled carbon nanotubes (CNTs). Conventional directed self-assembly ...
  • Resonant Coupling between Molecular Vibrations and Localized Surface Plasmon Resonance of Faceted Metal Oxide Nanocrystals 

    Agrawal, Ankit; Singh, Ajay; Yazdi, Sadegh; Singh, Amita; Ong, Gary K.; Bustillo, Karen; Johns, Robert W.; Ringe, Emilie; Milliron, Delia J. (2017)
    Doped metal oxides are plasmonic materials that boast both synthetic and postsynthetic spectral tunability. They have already enabled promising smart window and optoelectronic technologies and have been proposed for use ...
  • Shot noise detection in hBN-based tunnel junctions 

    Zhou, Panpan; Hardy, Will J.; Watanabe, Kenji; Taniguchi, Takashi; Natelson, Douglas (2017)
    High quality Au/hBN/Au tunnel devices are fabricated using transferred atomically thin hexagonal boron nitride as the tunneling barrier. All tunnel junctions show tunneling resistance on the order of several kΩ/μm2. Ohmic ...
  • Carboxylation and Decarboxylation of Aluminum Oxide Nanoparticles Using Bifunctional Carboxylic Acids and Octylamine 

    Alexander, Shirin; Gomez, Virginia; Barron, Andrew R. (2016)
    The carboxylation of alumina nanoparticles (NPs), with bifunctional carboxylic acids, provides molecular anchors that are used for building more complexed structures via either physisorption or chemisorption. Colloidal ...
  • Cost reduction in the solar industry 

    Barron, Andrew R. (2015)
    Andrew Barron discusses new processes as a route to attaining cost reduction targets for photovoltaic manufacturing
  • Perylene Diimide as a Precise Graphene-like Superoxide Dismutase Mimetic 

    Jalilov, Almaz S.; Nilewski, Lizanne G.; Berka, Vladimir; Zhang, Chenhao; Yakovenko, Andrey A.; Wu, Gang; Kent, Thomas A.; Tsai, Ah-Lim; Tour, James M. (2017)
    Here we show that the active portion of a graphitic nanoparticle can be mimicked by a perylene diimide (PDI) to explain the otherwise elusive biological and electrocatalytic activity of the nanoparticle construct. Development ...

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