Now showing items 213-232 of 245

    • Terahertz and Infrared Spectroscopy of Gated Large-Area Graphene 

      Ren, Lei; Zhang, Qi; Yao, Jun; Sun, Zhengzong; Kaneko, Ryosuke; Yan, Zheng; Nanot, Sébastien L.; Jin, Zhong; Kawayama, Iwao; Tonouchi, Masayoshi; Tour, James M.; Kono, Junichiro (2012)
      We have fabricated a centimeter-size single-layer graphene device with a gate electrode, which can modulate the transmission of terahertz and infrared waves. Using time-domain terahertz spectroscopy and Fourier-transform ...
    • Ternary CuIn7Se11: Towards Ultra-Thin Layered Photodetectors and Photovoltaic Devices 

      Lei, Sidong; Sobhani, Ali; Wen, Fangfang; George, Antony; Wang, Qizhong; Huang, Yihan; Dong, Pei; Li, Bo; Najmaei, Sina; Bellah, James; Gupta, Gautam; Mohite, Aditya D.; Ge, Liehui; Lou, Jun; Halas, Naomi J.; Vajtai, Robert; Ajayan, Pulickel (2014)
      2D materials have been widely studied over the past decade for their potential applications in electronics and optoelectronics. In these materials, elemental composition plays a critical role in defining their physical ...
    • Theoretical analysis of dynamic processes for interacting molecular motors 

      Teimouri, Hamid; Kolomeisky, Anatoly B.; Mehrabiani, Kareem (2015)
      Biological transport is supported by the collective dynamics of enzymatic molecules that are called motor proteins or molecular motors. Experiments suggest that motor proteins interact locally via short-range potentials. ...
    • Theoretical Analysis of Microtubule Dynamics at All Times 

      Li, Xin; Kolomeisky, Anatoly B. (2014)
      Microtubules are biopolymers consisting of tubulin dimer subunits. As a major component of cytoskeleton they are essential for supporting most important cellular processes such as cell division, signaling, intracellular ...
    • Theoretical analysis of selectivity mechanisms in molecular transport through channels and nanopores 

      Agah, Shaghayegh; Pasquali, Matteo; Kolomeisky, Anatoly B. (2015)
      Selectivity is one of the most fundamental concepts in natural sciences, and it is also critically important in various technological, industrial, and medical applications. Although there are many experimental methods that ...
    • Three-Dimensional Nanoporous Fe2O3/Fe3C-Graphene Heterogeneous Thin Films for Lithium-Ion Batteries 

      Yang, Yang; Fan, Xiujun; Casillas, Gilberto; Peng, Zhiwei; Ruan, Gedeng; Wang, Gunuk; Yacaman, Miguel Jose; Tour, James M. (2014)
      Three-dimensional self-organized nanoporous thin films integrated into a heterogeneous Fe2O3/Fe3C-graphene structure were fabricated using chemical vapor deposition. Few-layer graphene coated on the nanoporous thin film ...
    • Three-Dimensional Networked Nanoporous Ta2O5–x Memory System for Ultrahigh Density Storage 

      Wang, Gunuk; Lee, Jae-Hwang; Yang, Yang; Ruan, Gedeng; Kim, Nam Dong; Ji, Yongsung; Tour, James M. (2015)
      Oxide-based resistive memory systems have high near-term promise for use in nonvolatile memory. Here we introduce a memory system employing a three-dimensional (3D) networked nanoporous (NP) Ta2O5-x structure and graphene ...
    • The three-way switch operation of Rac1/RhoA GTPase-based circuit controlling amoeboid-hybrid-mesenchymal transition 

      Huang, Bin; Lu, Mingyang; Jolly, Mohit Kumar; Tsarfaty, Ilan; Onuchic, José; Ben-Jacob, Eshel (2014)
      Metastatic carcinoma cells exhibit at least two different phenotypes of motility and invasion - amoeboid and mesenchymal. This plasticity poses a major clinical challenge for treating metastasis, while its underlying ...
    • Total Synthesis and Structural Revision of Antibiotic CJ-16,264 

      Nicolaou, K.C.; Shah, Akshay A.; Korman, Henry; Khan, Tabrez; Shi, Lei; Worawalai, Wisuttaya; Theodorakis, Emmanuel A. (2015)
      The total synthesis and structural revision of antibiotic CJ-16,264 is described. Starting with citronellal, the quest for the target molecule featured a novel bis-transannular Diels-Alder reaction that casted stereoselectively ...
    • Total Synthesis of Myceliothermophins C, D and E 

      Nicolaou, K.C.; Shi, Lei; Lu, Min; Pattanayak, Manas R.; Shah, Akshay A.; Ioannidou, Heraklidia A.; Lamani, Manjunath (2014)
      The total synthesis of cytotoxic polyketides myceliothermophins E (1), C (2) and D (3) through a cascade-based cyclization to form the trans-fused decalin system is described. The convergent synthesis delivered all three ...
    • Total Synthesis of Viridicatumtoxin B and Analogues Thereof: Strategy Evolution, Structural Revision, and Biological Evaluation 

      Nicolaou, K.C.; Hale, Christopher R.H.; Nilewski, Christian; Ioannidou, Heraklidia A.; ElMarrouni, Abdelatif; Nilewski, Lizanne G.; Beabout, Kathryn; Wang, Tim T.; Shamoo, Yousif (2014)
      The details of the total synthesis of viridicatumtoxin B (1) are described. Initial synthetic strategies toward this intriguing tetracycline antibiotic resulted in the development of key alkylation and Lewis acid-mediated ...
    • Total Synthesis of Δ12-Prostaglandin J3, a Highly Potent and Selective Antileukemic Agent 

      Nicolaou, K.C.; Heretsch, Philipp; ElMarrouni, Abdelatif; Hale, Christopher R.H.; Pulukuri, Kiran K.; Kudva, Avinash K.; Narayan, Vivek; Prabhu, K. Sandeep (2014)
      A catalytic asymmetric total synthesis of the potent and selective antileukemic Δ12-prostaglandin J3 (Δ12-PGJ3) is described. The convergent synthesis proceeded through intermediates 2 and 3, constructed enantioselectively ...
    • Toward carbon nanotube-based imaging agents for the clinic 

      Hernández-Rivera, Mayra; Zaibaq, Nicholas G.; Wilson, Lon J. (2016)
      Among the many applications for carbon nanotubes (CNTs), their use in medicine has drawn special attention due to their potential for a variety of therapeutic and diagnostic applications. As progress toward clinical ...
    • Toxicity of Quantum Dots and Cadmium Salt to Caenorhabditis elegans after Multigenerational Exposure 

      Contreras, Elizabeth Q.; Cho, Minjung; Zhu, Huiguang; Puppala, Hema L.; Escalera, Gabriela; Zhong, Weiwei; Colvin, Vicki L. (2013)
      To fully understand the biological and environmental impacts of nanomaterials requires studies that address both sublethal end points and multigenerational effects. Here, we use a nematode to examine these issues as they ...
    • Transport mechanism in granular Ni deposited on carbon nanotubes fibers 

      Salvato, M.; Lucci, M.; Ottaviani, I.; Cirillo, M.; Tamburri, E.; Orlanducci, S.; Terranova, M.L.; Notarianni, M.; Young, C.C.; Behabtu, N.; Pasquali, M. (2012)
      We investigate the transport properties of granular nickel electrodeposited on carbon nanotube fibers by measuring the electrical resistance and the current voltage characteristics as a function of the temperature. The ...
    • Troika of single particle tracking programing: SNR enhancement, particle identification, and mapping 

      Shuang, Bo; Chen, Jixin; Kisley, Lydia; Landes, Christy F. (2014)
      Single particle tracking (SPT) techniques provide a microscopic approach to probe in vivo and in vitro structure and reactions. Automatic analysis of SPT data with high efficiency and accuracy spurs the development of SPT ...
    • Tunable optical tweezers for wavelength-dependent measurements 

      Hester, Brooke; Campbell, Gretchen K.; Lopez-Mariscal, Carlos; Filgueira, Carly Levin; Huschka, Ryan; Halas, Naomi J.; Helmerson, Kristian (2012)
      Optical trapping forces depend on the difference between the trap wavelength and the extinction resonances of trapped particles. This leads to a wavelength-dependent trapping force, which should allow for the optimization ...
    • 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. ...
    • 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 ...
    • 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 ...