Now showing items 1-20 of 841

    • Giant Terahertz-Wave Absorption by Monolayer Graphene in a Total Internal Reflection Geometry 

      Harada, Yoichi; Ukhtary, Muhammad Shoufie; Wang, Minjie; Srinivasan, Sanjay K.; Hasdeo, Eddwi H.; Nugraha, Ahmad R.T.; Noe, G. Timothy II; Sakai, Yuji; Vajtai, Robert; Ajayan, Pulickel M.; Saito, Riichiro; Kono, Junichiro (2017)
      We experimentally demonstrated significant enhancement of terahertz-wave absorption in monolayer graphene by simply sandwiching monolayer graphene between two dielectric media in a total internal reflection geometry. In ...
    • Artificial topological models based on a one-dimensional spin-dependent optical lattice 

      Zheng, Zhen; Pu, Han; Zou, Xubo; Guo, Guangcan (2017)
      Topological matter is a popular topic in both condensed matter and cold-atom research. In the past decades, a variety of models have been identified with fascinating topological features. Some, but not all, of the models ...
    • Destabilization of Surfactant-Dispersed Carbon Nanotubes by Anions 

      Hirano, Atsushi; Gao, Weilu; He, Xiaowei; Kono, Junichiro (2017)
      The colloidal stability of surfactant-dispersed single-wall carbon nanotubes (SWCNTs) is determined by microscopic physicochemical processes, such as association, partitioning, and adsorption propensities. These processes ...
    • Phylogenetic analysis of eukaryotic NEET proteins uncovers a link between a key gene duplication event and the evolution of vertebrates 

      Inupakutika, Madhuri A.; Sengupta, Soham; Nechushtai, Rachel; Jennings, Patricia A.; Onuchic, José N.; Azad, Rajeev K.; Padilla, Pamela; Mittler, Ron (2017)
      NEET proteins belong to a unique family of iron-sulfur proteins in which the 2Fe-2S cluster is coordinated by a CDGSH domain that is followed by the “NEET” motif. They are involved in the regulation of iron and reactive ...
    • Diverse Applications of Nanomedicine 

      Pelaz, Beatriz; Alexiou, Christoph; Alvarez-Puebla, Ramon A.; Alves, Frauke; Andrews, Anne M.; Ashraf, Sumaira; Balogh, Lajos P.; Ballerini, Laura; Bestetti, Alessandra; Brendel, Cornelia; Bosi, Susanna; Carril, Monica; Chan, Warren C.W.; Chen, Chunying; Chen, Xiaodong; Chen, Xiaoyuan; Cheng, Zhen; Cui, Daxiang; Du, Jianzhong; Dullin, Christian; Escudero, Alberto; Feliu, Neus; Gao, Mingyuan; George, Michael; Gogotsi, Yury; Grünweller, Arnold; Gu, Zhongwei; Halas, Naomi J.; Hampp, Norbert; Hartmann, Roland K.; Hersam, Mark C.; Hunziker, Patrick; Jian, Ji; Jiang, Xingyu; Jungebluth, Philipp; Kadhiresan, Pranav; Kataoka, Kazunori; Khademhosseini, Ali; Kopeček, Jindřich; Kotov, Nicholas A.; Krug, Harald F.; Lee, Dong Soo; Lehr, Claus-Michael; Leong, Kam W.; Liang, Xing-Jie; Lim, Mei Ling; Liz-Marzán, Luis M.; Ma, Xiaowei; Macchiarini, Paolo; Meng, Huan; Möhwald, Helmuth; Mulvaney, Paul; Nel, Andre E.; Nie, Shuming; Nordlander, Peter; Okano, Teruo; Oliveira, Jose; Park, Tai Hyun; Penner, Reginald M.; Prato, Maurizio; Puntes, Victor; Rotello, Vincent M.; Samarakoon, Amila; Schaak, Raymond E.; Shen, Youqing; Sjöqvist, Sebastian; Skirtach, Andre G.; Soliman, Mahmoud G.; Stevens, Molly M.; Sung, Hsing-Wen; Tang, Ben Zhong; Tietze, Rainer; Udugama, Buddhisha N.; VanEpps, J. Scott; Weil, Tanja; Weiss, Paul S.; Willner, Itamar; Wu, Yuzhou; Yang, Lily; Yue, Zhao; Zhang, Qian; Zhang, Qiang; Zhang, Xian-En; Zhao, Yuliang; Zhou, Xin; Parak, Wolfgang J. (2017)
      The design and use of materials in the nanoscale size range for addressing medical and health-related issues continues to receive increasing interest. Research in nanomedicine spans a multitude of areas, including drug ...
    • 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 ...
    • Shifted Landau ladders and low field magneto-oscillations in high-mobility GaAs 2D hole systems 

      Zhang, Po; Wang, Jianli; Zhang, Chi; Du, Rui-Rui; Pfeiffer, L.N.; West, K.W. (2017)
      We present well-developed low-field magneto-resistance oscillations originating from zero-field spin splitting (ZFSS) of heavy holes in high mobility GaAs/AlGaAs quantum wells. This low field oscillation is 1/B-periodic ...
    • Dynamically Manipulating Topological Physics and Edge Modes in a Single Degenerate Optical Cavity 

      Zhou, Xiang-Fa; Luo, Xi-Wang; Wang, Su; Guo, Guang-Can; Zhou, Xingxiang; Pu, Han; Zhou, Zheng-Wei (2017)
      We propose a scheme to simulate topological physics within a single degenerate cavity, whose modes are mapped to lattice sites. A crucial ingredient of the scheme is to construct a sharp boundary so that the open boundary ...
    • Interactions between mitoNEET and NAF-1 in cells 

      Karmi, Ola; Holt, Sarah H.; Song, Luhua; Tamir, Sagi; Luo, Yuting; Bai, Fang; Adenwalla, Ammar; Darash-Yahana, Merav; Sohn, Yang-Sung; Jennings, Patricia A.; Azad, Rajeev K.; Onuchic, José N.; Morcos, Faruck; Nechushtai, Rachel; Mittler, Ron (2017)
      The NEET proteins mitoNEET (mNT) and nutrient-deprivation autophagy factor-1 (NAF-1) are required for cancer cell proliferation and resistance to oxidative stress. NAF-1 and mNT are also implicated in a number of other ...
    • Rydberg blockade in a hot atomic beam 

      Yoshida, S.; Burgdörfer, J.; Zhang, X.; Dunning, F.B. (2017)
      The dipole blockade of very-high-n, n∼300, strontium 5snf1F3 Rydberg atoms in a hot atomic beam is studied. For such high n, the blockade radius can exceed the linear dimensions of the excitation volume. Rydberg atoms ...
    • Interrogating the topological robustness of gene regulatory circuits by randomization 

      Huang, Bin; Lu, Mingyang; Jia, Dongya; Ben-Jacob, Eshel; Levine, Herbert; Onuchic, José N. (2017)
      One of the most important roles of cells is performing their cellular tasks properly for survival. Cells usually achieve robust functionality, for example, cell-fate decision-making and signal transduction, through multiple ...
    • A magnesium-induced triplex pre-organizes the SAM-II riboswitch 

      Roy, Susmita; Lammert, Heiko; Hayes, Ryan L.; Chen, Bin; LeBlanc, Regan; Dayie, T. Kwaku; Onuchic, José N.; Sanbonmatsu, Karissa Y. (2017)
      Our 13C- and 1H-chemical exchange saturation transfer (CEST) experiments previously revealed a dynamic exchange between partially closed and open conformations of the SAM-II riboswitch in the absence of ligand. Here, ...
    • Phase diagram and neutron spin resonance of superconducting NaFe1−xCuxAs 

      Tan, Guotai; Song, Yu; Zhang, Rui; Lin, Lifang; Xu, Zhuang; Tian, Long; Chi, Songxue; Graves-Brook, M.K.; Li, Shiliang; Dai, Pengcheng (2017)
      We use transport and neutron scattering to study the electronic phase diagram and spin excitations of NaFe1−xCuxAs single crystals. Similar to Co- and Ni-doped NaFeAs, a bulk superconducting phase appears near x≈2% with ...
    • Semilocal exchange hole with an application to range-separated density functionals 

      Tao, Jianmin; Bulik, Ireneusz W.; Scuseria, Gustavo E. (2017)
      The exchange-correlation hole is a central concept in density functional theory. It not only provides justification for an exchange-correlation energy functional but also serves as a local ingredient for nonlocal range-separated ...
    • Superconductivity and electronic fluctuations in Ba1−xKxFe2As2 studied by Raman scattering 

      Wu, S.-F.; Richard, P.; Ding, H.; Wen, H.-H.; Tan, Guotai; Wang, Meng; Zhang, Chenglin; Dai, Pengcheng; Blumberg, G. (2017)
      Using polarization-resolved electronic Raman scattering we study underdoped, optimally doped, and overdoped Ba1−xKxFe2As2 samples in the normal and superconducting states. We show that low-energy nematic fluctuations are ...
    • Intensive Atomization Energy: Re-Thinking a Metric for Electronic Structure Theory Methods 

      Perdew, John P.; Sun, Jianwei; Garza, Alejandro J.; Scuseria, Gustavo E. (2016)
      The errors in atomization energies (AE) of molecules have long been used to measure the errors of wavefunction or density functional methods for electronic structure calculations. In particular, the G3 set of Pople and ...
    • Stability of High-Density Two-Dimensional Excitons against a Mott Transition in High Magnetic Fields Probed by Coherent Terahertz Spectroscopy 

      Zhang, Qi; Wang, Yongrui; Gao, Weilu; Long, Zhongqu; Watson, John D.; Manfra, Michael J.; Belyanin, Alexey; Kono, Junichiro (2016)
      We have performed time-resolved terahertz absorption measurements on photoexcited electron-hole pairs in undoped GaAs quantum wells in magnetic fields. We probed both unbound- and bound-carrier responses via cyclotron ...
    • Comparative Study of the Condensing Effects of Ergosterol and Cholesterol 

      Hung, Wei-Chin; Lee, Ming-Tao; Chung, Hsien; Sun, Yi-Ting; Chen, Hsiung; Charron, Nicholas E.; Huang, Huey W. (2016)
      Cholesterol, due to its condensing effect, is considered an important regulator of membrane thickness. Other sterols, due to their structural similarities to cholesterol, are often assumed to have a universal effect on ...
    • Modular knowledge systems accelerate human migration in asymmetric random environments 

      Wang, Dong; Deem, Michael W. (2016)
      Migration is a key mechanism for expansion of communities. In spatially heterogeneous environments, rapidly gaining knowledge about the local environment is key to the evolutionary success of a migrating population. For ...
    • Template–Framework Interactions in Tetraethylammonium-Directed Zeolite Synthesis 

      Schmidt, Joel E.; Fu, Donglong; Deem, Michael W.; Weckhuysen, Bert M. (2016)
      Zeolites, having widespread applications in chemical industries, are often synthesized using organic templates. These can be cost-prohibitive, motivating investigations into their role in promoting crystallization. Herein, ...