Now showing items 2053-2072 of 2141

    • Tuning Edge States in Strained-Layer InAs/GaInSb Quantum Spin Hall Insulators 

      Du, Lingjie; Li, Tingxin; Lou, Wenkai; Wu, Xingjun; Liu, Xiaoxue; Han, Zhongdong; Zhang, Chi; Sullivan, Gerard; Ikhlassi, Amal; Chang, Kai; Du, Rui-Rui (2017)
      We report on a class of quantum spin Hall insulators (QSHIs) in strained-layer InAs / GaInSb quantum wells, in which the bulk gaps are enhanced up to fivefold as compared to the binary InAs / GaSb QSHI. Remarkably, ...
    • Tuning Hydrogel Properties to Promote the Assembly of Salivary Gland Spheroids in 3D 

      Ozdemir, Tugba; Fowler, Eric W.; Liu, Shuang; Harrington, Daniel A.; Witt, Robert L.; Farach-Carson, Mary C.; Pradhan-Bhatt, Swati; Jia, Xinqiao (2016)
      Current treatments for chronic xerostomia, or “dry mouth”, do not offer long-term therapeutic benefits for head and neck cancer survivors previously treated with curative radiation. Towards the goal of creating tissue-engineered ...
    • Tuning the acoustic frequency of a gold nanodisk through its adhesion layer 

      Chang, Wei-Shun; Wen, Fangfang; Chakraborty, Debadi; Su, Man-Nung; Zhang, Yue; Shuang, Bo; Nordlander, Peter; Sader, John E.; Halas, Naomi J.; Link, Stephan (2015)
      To fabricate robust metallic nanostructures with top-down patterning methods such as electron-beam lithography, an initial nanometer-scale layer of a second metal is deposited to promote adhesion of the metal of interest. ...
    • Tuning the charge states in InAs/GaSb or InAs/GaInSb composite quantum wells by persistent photoconductivity 

      Tong, Bingbing; Han, Zhongdong; Li, Tingxin; Zhang, Chi; Sullivan, Gerard; Du, Rui-Rui (2017)
      We have experimentally studied the persistent photoconductivity (PPC) in inverted InAs/GaSb and InAs/GaInSb quantum wells, which can be tuned into a bulk-insulating state by electron-hole hybridization. Specifically we ...
    • Tuning the dynamic range of bacterial promoters regulated by ligand-inducible transcription factors 

      Chen, Ye; Ho, Joanne M.L.; Shis, David L.; Gupta, Chinmaya; Long, James; Wagner, Daniel S.; Ott, William; Josić, Krešimir; Bennett, Matthew R. (2018)
      One challenge for synthetic biologists is the predictable tuning of genetic circuit regulatory components to elicit desired outputs. Gene expression driven by ligand-inducible transcription factor systems must exhibit the ...
    • Tuning the dynamic range of bacterial promoters regulated by ligand-inducible transcription factors 

      Chen, Ye; Ho, Joanne M. L.; Shis, David L.; Gupta, Chinmaya; Long, James; Wagner, Daniel S.; Ott, William; Josić, Krešimir; Bennett, Matthew R. (2018)
      One challenge for synthetic biologists is the predictable tuning of genetic circuit regulatory components to elicit desired outputs. Gene expression driven by ligand-inducible transcription factor systems must exhibit the ...
    • Tuning the Magnetic Quantum Criticality of Artificial Kondo Superlattices CeRhIn5/YbRhIn5 

      Ishii, T.; Toda, R.; Hanaoka, Y.; Tokiwa, Y.; Shimozawa, M.; Kasahara, Y.; Endo, R.; Terashima, T.; Nevidomskyy, A.H.; Shibauchi, T.; Matsuda, Y. (2016)
      The effects of reduced dimensions and the interfaces on antiferromagnetic quantum criticality are studied in epitaxial Kondo superlattices, with alternating n layers of heavy-fermion antiferromagnet CeRhIn5 and seven layers ...
    • Turning On and Off Photoinduced Electron Transfer in Fluorescent Proteins by π-Stacking, Halide Binding, and Tyr145 Mutations 

      Bogdanov, Alexey M.; Acharya, Atanu; Titelmayer, Anastasia V.; Mamontova, Anastasia V.; Bravaya, Ksenia B.; Kolomeisky, Anatoly B.; Lukyanov, Konstantin A.; Krylov, Anna I. (2016)
      Photoinduced electron transfer in fluorescent proteins from the GFP family can be regarded either as an asset facilitating new applications or as a nuisance leading to the loss of optical output. Photooxidation commonly ...
    • Turning Oscillations Into Opportunities: Lessons from a Bacterial Decision Gate 

      Schultz, Daniel; Lu, Mingyang; Stavropoulos, Trevor; Onuchic, José; Ben-Jacob, Eshel (2013)
      Sporulation vs. competence provides a prototypic example of collective cell fate determination. The decision is performed by the action of three modules: 1) A stochastic competence switch whose transition probability is ...
    • Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces 

      Li, Jiebo; Qian, Huifeng; Chen, Hailong; Zhao, Zhun; Yuan, Kaijun; Chen, Guangxu; Miranda, Andrea; Guo, Xunmin; Chen, Yajing; Zheng, Nanfeng; Wong, Michael S.; Zheng, Junrong (2016)
      Energy migrations at metal nanomaterial surfaces are fundamentally important to heterogeneous reactions. Here we report two distinctive energy migration pathways of monolayer adsorbate molecules on differently sized metal ...
    • Two spatially separated phases in semiconducting Rb0.8Fe1.5S2 

      Wang, Meng; Tian, Wei; Valdivia, P.; Chi, Songxue; Bourret-Courchesne, E.; Dai, Pengcheng; Birgeneau, R. J. (2014)
      We report neutron scattering and transport measurements on semiconducting Rb0.8Fe1.5S2, a compound isostructural and isoelectronic to the well-studied A0.8FeySe2(A=K,Rb,Cs,Tl/K) superconducting systems. Both resistivity ...
    • Two-component Bose-Hubbard model in an array of cavity polaritons 

      Zhang, Yong-Chang; Zhou, Xiang-Fa; Zhou, Xingxiang; Guo, Guang-Can; Pu, Han; Zhou, Zheng-Wei (2015)
      We propose a scheme which can realize an extended two-component Bose-Hubbard model using polaritons confined in an array of optical cavities. In addition to the density-dependent interactions, this model also contains ...
    • Two-component polariton condensate in an optical microcavity 

      Zhang, Yong-Chang; Zhou, Xiang-Fa; Guo, Guang-Can; Zhou, Xingxiang; Pu, Han; Zhou, Zheng-Wei (2014)
      We present a scheme for engineering the extended two-component Bose-Hubbard model using polariton condensate supported by an optical microcavity. Compared to the usual two-component Bose-Hubbard model with only Kerr ...
    • Two-Dimensional Massless Dirac Fermions in Antiferromagnetic AFe2As2 (A=Ba,Sr) 

      Chen, Zhi-Guo; Wang, Luyang; Song, Yu; Lu, Xingye; Luo, Huiqian; Zhang, Chenglin; Dai, Pengcheng; Yin, Zhiping; Haule, Kristjan; Kotliar, Gabriel (2017)
      We report infrared studies of AFe2As2 (A=Ba, Sr), two representative parent compounds of iron-arsenide superconductors, at magnetic fields (B) up to 17.5 T. Optical transitions between Landau levels (LLs) were observed in ...
    • Two-photon photoassociative spectroscopy of ultracold 88Sr 

      Martinez de Escobar, Y.N.; Mickelson, P.G.; Pellegrini, P.; Nagel, S.B.; Traverso, A.; Yan, M.; Cote, R.; Killian, T.C. (2008-12-10)
    • Two-Step Self-Assembly of Liposome-Multidomain Peptide Nanofiber Hydrogel for Time-Controlled Release 

      Wickremasinghe, Navindee C.; Kumar, Vivek A.; Hartgerink, Jeffrey D. (2014)
      Progress in self-assembly and supramolecular chemistry has been directed toward obtaining macromolecular assemblies with higher degrees of complexity, simulating the highly structured environment in natural systems. One ...
    • Type-I superconductivity in ScGa3 and LuGa3 single crystals 

      Svanidze, E.; Morosan, E. (2012)
      We present evidence of type-I superconductivity in single crystals of ScGa3 and LuGa3, from magnetization, specific heat, and resistivity measurements: low critical temperatures Tc = 2.1–2.2 K; field-induced secondto first-order ...
    • Type-I superconductivity in YbSb2 single crystals 

      Zhao, Liang L.; Lausberg, Stefan; Kim, H.; Tanatar, M.A.; Brando, Manuel; Prozorov, R.; Morosan, E. (2012)
      We present evidence of type-I superconductivity in YbSb2 single crystals from dc and ac magnetization, heat capacity, and resistivity measurements. The critical temperature and critical field are determined to be Tc ≈ 1.3 ...
    • ULF wave derived radiation belt radial diffusion coefficients 

      Ozeke, Louis G.; Mann, Ian R.; Murphy, Kyle R.; Rae, I. Jonathan; Milling, David K.; Elkington, Scot R.; Chan, Anthony A.; Singer, Howard J. (2012)
      Waves in the ultra-low-frequency (ULF) band have frequencies which can be drift resonant with electrons in the outer radiation belt, suggesting the potential for strong interactions and enhanced radial diffusion. Previous ...
    • Ultra-High Surface Area Activated Porous Asphalt for CO2 Capture through Competitive Adsorption at High Pressures 

      Jalilov, Almaz S.; Li, Yilun; Tian, Jian; Tour, James M. (2017)
      This study reports an improved method for activating asphalt to produce ultra-high surface area porous carbons. Pretreatment of asphalt (untreated Gilsonite, uGil) at 400 °C for 3 h removes the more volatile organic compounds ...