Now showing items 1-20 of 258

    • Surfactant-assisted individualization and dispersion of boron nitride nanotubes 

      McWilliams, Ashleigh D. Smith; Reyes, Carlos A. de los; Liberman, Lucy; Ergülen, Selin; Talmon, Yeshayahu; Pasquali, Matteo; A. Martí, Angel (2019)
      Boron nitride nanotubes (BNNTs) belong to a novel class of material with useful thermal, electronic and optical properties. However, the study and the development of applications of this material requires the formation of ...
    • Tailoring the Attraction of Polymers toward Surfaces 

      Stein, Gila E.; Laws, Travis S.; Verduzco, Rafael (2019)
      In polymer blends and block copolymers, one constituent (or segment type) is often enriched at the surface. This enrichment has important consequences for a variety of surface functions, including wettability, adhesive ...
    • Creating fluorescent quantum defects in carbon nanotubes using hypochlorite and light 

      Lin, Ching-Wei; Bachilo, Sergei M.; Zheng, Yu; Tsedev, Uyanga; Huang, Shengnan; Weisman, R. Bruce; Belcher, Angela M. (2019)
      Covalent doping of single-walled carbon nanotubes (SWCNTs) can modify their optical properties, enabling applications as single-photon emitters and bio-imaging agents. We report here a simple, quick, and controllable method ...
    • Hydrogen-generating behavior of Pd-decorated gold nanoparticles via formic acid decomposition 

      Zhao, Zhun; Heck, Kimberly N.; Limpornpipat, Pongsak; Qian, Huifeng; Miller, Jeffrey T.; Wong, Michael S. (2019)
      Formic acid is a promising hydrogen storage material where hydrogen is generated via metal-catalyzed decomposition. Bimetallic catalysts are active for this reaction, but the mechanism has not been fully proven. Palladium ...
    • Highly Defective UiO-66 Materials for the Adsorptive Removal of Perfluorooctanesulfonate 

      Clark, Chelsea A.; Heck, Kimberly N.; Powell, Camilah D.; Wong, Michael S. (2019)
      Perfluorooctanesulfonate (PFOS) is a persistent organic pollutant that is bioaccumulative and toxic. While its use in most countries has been restricted to certain industrial applications due to environmental and health ...
    • Terahertz Faraday and Kerr rotation spectroscopy of Bi1−xSbx films in high magnetic fields up to 30 tesla 

      Li, Xinwei; Yoshioka, Katsumasa; Xie, Ming; Noe, G. Timothy; Lee, Woojoo; Marquez Peraca, Nicolas; Gao, Weilu; Hagiwara, Toshio; Handegård, Ørjan S.; Nien, Li-Wei; Nagao, Tadaaki; Kitajima, Masahiro; Nojiri, Hiroyuki; Shih, Chih-Kang; MacDonald, Allan H.; Katayama, Ikufumi; Takeda, Jun; Fiete, Gregory A.; Kono, Junichiro (2019)
      We report results of terahertz Faraday and Kerr rotation spectroscopy measurements on thin films of Bi1−xSbx, an alloy system that exhibits a semimetal-to-topological-insulator transition as the Sb composition x increases. ...
    • Electrodeposition of Cu-SWCNT Composites 

      Raja, Pavan M. V.; Esquenazi, Gibran L.; Gowenlock, Cathren E.; Jones, Daniel R.; Li, Jianhua; Brinson, Bruce; Barron, Andrew R. (2019)
      Single walled carbon nanotubes (SWCNTs) are used as a component of a plating solution of CuSO4 for direct current electrodeposition of Cu–SWCNT composites with varying nanotube proportions without the use of either a ...
    • Design of a Pd–Au Nitrite Reduction Catalyst by Identifying and Optimizing Active Ensembles 

      Li, Hao; Guo, Sujin; Shin, Kihyun; Wong, Michael S.; Henkelman, Graeme (2019)
      Nitrate (NO3–) is a ubiquitous contaminant in groundwater that causes serious public health issues around the world. Though various strategies are able to reduce NO3– to nitrite (NO2–), a rational catalyst design strategy ...
    • Self assembled, sulfonated pentablock copolymer cation exchange coatings for membrane capacitive deionization 

      Jain, Amit; Weathers, Cierra; Kim, Jun; Meyer, Matthew D.; Walker, W. Shane; Li, Qilin; Verduzco, Rafael (2019)
      Membrane capacitive deionization (MCDI) is a simple and low-cost method for brackish water desalination involving reversible electrosorption using high surface area, porous electrodes paired with ion-exchange membranes. ...
    • Impact of chemical interface damping on surface plasmon dephasing 

      Therrien, Andrew J.; Kale, Matthew J.; Yuan, Lin; Zhang, Chao; Halas, Naomi J.; Christopher, Phillip (2019)
      The excellent light harvesting ability of plasmonic nanoparticles makes them promising materials for a variety of technologies that rely on the conversion of photons to energetic charge carriers. In such applications, ...
    • Catalytic Converters for Water Treatment 

      Heck, Kimberly N.; Garcia-Segura, Sergi; Westerhoff, Paul; Wong, Michael S. (2019)
      Fresh water demand is driven by human consumption, agricultural irrigation, and industrial usage and continues to increase along with the global population. Improved methods to inexpensively and sustainably clean water ...
    • Entropic and Enthalpic Effects in Thin Film Blends of Homopolymers and Bottlebrush Polymers 

      Mah, Adeline Huizhen; Laws, Travis; Li, Wei; Mei, Hao; Brown, Chance C.; Ievlev, Anton; Kumar, Rajeev; Verduzco, Rafael; Stein, Gila E. (2019)
      We present a combined experimental and computational study of surface segregation in thin films of nearly athermal blends of linear and bottlebrush polymers. The lengths of bottlebrush backbone (Nb), bottlebrush side chain ...
    • Direct shape programming of liquid crystal elastomers 

      Barnes, Morgan; Verduzco, Rafael (2019)
      Liquid crystal elastomers (LCEs) are shape morphing materials promising for many applications including soft robotics, actuators, and biomedical devices, but current LCE synthesis techniques lack a simple method to program ...
    • Near-equilibrium growth from borophene edges on silver 

      Zhang, Zhuhua; Mannix, Andrew J.; Liu, Xiaolong; Hu, Zhili; Guisinger, Nathan P.; Hersam, Mark C.; Yakobson, Boris I. (2019)
      Two-dimensional boron, borophene, was realized in recent experiments but still lacks an adequate growth theory for guiding its controlled synthesis. Combining ab initio calculations and experimental characterization, we ...
    • Direct triplet sensitization of oligothiophene by quantum dots 

      Xu, Zihao; Jin, Tao; Huang, Yiming; Mulla, Karimulla; Evangelista, Francesco A.; Egap, Eilaf; Lian, Tianquan (2019)
      Effective sensitization of triplet states is essential to many applications, including triplet–triplet annihilation based photon upconversion schemes. This work demonstrates successful triplet sensitization of a CdSe quantum ...
    • Microencapsulated Photoluminescent Gold for ppb-Level Chromium(VI) Sensing 

      Yin, Yiyuan B.; Coonrod, Christian L.; Heck, Kimberly N.; Lejarza, Fernando; Wong, Michael S. (2019)
      Luminescent gold nanoclusters (Au NCs) are a promising probe material for selective chemical sensing. However, low luminescent intensity and an incomplete understanding of the mechanistic origin of the luminescence limit ...
    • Effectiveness of metal oxide catalysts for the degradation of 1,4-dioxane 

      Heck, Kimberly N.; Wang, Yehong; Wu, Gang; Wang, Feng; Tsai, Ah-Lim; Adamson, David T.; Wong, Michael S. (2019)
      1,4-dioxane, commonly used as a solvent stabilizer and industrial solvent, is an environmental contaminant and probable carcinogen. In this study, we explored the concept of using metal oxides to activate H2O2 catalytically ...
    • Electric Double Layer Field-Effect Transistors Using Two-Dimensional (2D) Layers of Copper Indium Selenide (CuIn7Se11) 

      Patil, Prasanna D.; Ghosh, Sujoy; Wasala, Milinda; Lei, Sidong; Vajtai, Robert; Ajayan, Pulickel M.; Talapatra, Saikat (2019)
      Innovations in the design of field-effect transistor (FET) devices will be the key to future application development related to ultrathin and low-power device technologies. In order to boost the current semiconductor device ...
    • Strain tolerance of two-dimensional crystal growth on curved surfaces 

      Wang, Kai; Puretzky, Alexander A.; Hu, Zhili; Srijanto, Bernadeta R.; Li, Xufan; Gupta, Nitant; Yu, Henry; Tian, Mengkun; Mahjouri-Samani, Masoud; Gao, Xiang; Oyedele, Akinola; Rouleau, Christopher M.; Eres, Gyula; Yakobson, Boris I.; Yoon, Mina; Xiao, Kai; Geohegan, David B. (2019)
      Two-dimensional (2D) crystal growth over substrate features is fundamentally guided by the Gauss-Bonnet theorem, which mandates that rigid, planar crystals cannot conform to surfaces with nonzero Gaussian curvature. Here, ...
    • Understanding the effect of carbon nanotube functionalization on copper electrodeposition 

      Kazimierska, Ewa; Andreoli, Enrico; Barron, Andrew R. (2019)
      The dynamics of electrochemical deposition and dissolution of copper in the presence of functionalized multiwalled carbon nanotubes in solution has been studied in detail using an electrochemical quartz crystal microbalance. ...