Now showing items 139-158 of 476

    • Equilibrium at the edge and atomistic mechanisms of graphene growth 

      Artyukhov, Vasilii I.; Liu, Yuanyue; Yakobson, Boris I. (2012)
      The morphology of graphene is crucial for its applications, yet an adequate theory of its growth is lacking: It is either simplified to a phenomenological-continuum level or is overly detailed in atomistic simulations, ...
    • Error-based Extraction of States and Energy Landscapes from Experimental Single-Molecule Time-Series 

      Taylor, J. Nicholas; Li, Chun-Biu; Cooper, David R.; Landes, Christy F.; Komatsuzaki, Tamiki (2015)
      Characterization of states, the essential components of the underlying energy landscapes, is one of the most intriguing subjects in single-molecule (SM) experiments due to the existence of noise inherent to the measurements. ...
    • Evidence for nuclear internalisation of biocompatible [60]fullerene1) 

      Huang, Feiran; Mackeyev, Yuri; Watson, Erin; Cheney, Matthew A.; Wilson, Lon J.; Suh, Junghae (2013)
      Many types of nanoparticles (NPs) have been shown to internalise within mammalian cells (1), but only a few have been observed to internalise within the cell nucleus-most likely due to the tightly-regulated nuclear membrane ...
    • Excited electronic states from a variational approach based on symmetry-projected Hartree–Fock configurations 

      Jiménez-Hoyos, Carlos A.; Rodríguez-Guzmán, R.; Scuseria, Gustavo E. (2013)
      Recent work from our research group has demonstrated that symmetry-projected Hartree–Fock (HF) methods provide a compact representation of molecular ground state wavefunctions based on a superposition of non-orthogonal ...
    • Experimental realization of crossover in shape and director field of nematic tactoids 

      Jamali, Vida; Behabtu, Natnael; Senyuk, Bohdan; Lee, J. Alex; Smalyukh, Ivan I.; van der Schoot, Paul; Pasquali, Matteo (2015)
      Spindle-shaped nematic droplets (tactoids) form in solutions of rod-like molecules at the onset of the liquid crystalline phase. Their unique shape and internal structure result from the interplay of the elastic deformation ...
    • Experiments towards size and dopant control of germanium quantum dots for solar applications 

      Oliva-Chatelain, Brittany L.; Barron, Andrew R. (2016)
      While the literature for the doping of silicon quantum dots (QDs) and nanocrystals (NCs) is extensive, reports of doping their germanium analogs are sparse. We report a range of attempts to dope Ge QDs both during and ...
    • Exploiting Predictable Observer Mobility for Power Efficient Sensor Network Communication 

      Chakrabarti, Arnab (2003-04-20)
      This thesis introduces techniques that exploit predictable mobility of the observer (data sink) to reduce communication range, thereby saving power in wireless sensor networks (WSNs). The movement of public transport ...
    • Exploring the free energy landscape of nucleosome assembly 

      Zhang, B.; Zheng, W.; Papoian, G.A.; Wolynes, P.G. (2016)
      The nucleosome is the fundamental unit for packaging the genome. A detailed molecular picture for its conformational dynamics is crucial for understanding transcription and gene regulation. We investigate the disassembly ...
    • Expression platforms for producing eukaryotic proteins: a comparison ofᅠE. coliᅠcell-based and wheat germ cell-free synthesis, affinity and solubility tags, and cloning strategies 

      Aceti, David J.; Bingman, Craig A.; Wrobel, Russell L.; Frederick, Ronnie O.; Makino, Shin-ichi; Nichols, Karl W.; Sahu, Sarata C.; Bergeman, Lai F.; Blommel, Paul G.; Cornilescu, Claudia C.; Gromek, Katarzyna A.; Seder, Kory D.; Hwang, Soyoon; Primm, John G.; Sabat, Grzegorz; Vojtik, Frank C.; Volkman, Brian F.; Zolnai, Zsolt; Phillips, George N. Jr.; Markley, John L.; Fox, Brian G. (2015)
      Vectors designed for protein production in Escherichia coli and by wheat germ cell-free translation were tested using 21 well-characterized eukaryotic proteins chosen to serve as controls within the context of a structural ...
    • Extending single molecule fluorescence observation time by amplitude-modulated excitation 

      Kisley, Lydia; Chang, Wei-Shun; Cooper, David; Mansur, Andrea P.; Landes, Christy F. (2013)
      We present a hardware-based method that can improve single molecule fluorophore observation time by up to 1500% and super-localization by 47% for the experimental conditions used. The excitation was modulated using an ...
    • Facile one-pot synthesis of triphenylbismuth (V) bis(carboxylate) complexes 

      Kumar, Ish; Bhattacharya, Prateek; Whitmire, Kenton H. (2014)
      Triphenylbismuth(V) bis(carboxylates), Ph3Bi(O2CR)2 (R = 5-Br-2-OH-C6H3- (1), 2-OH-C6H4-(2), 2,6-(OH)2-C6H3- (3); 3-Me-2-NH2-C6H3- (4); Ph- (5) and Me- (6)) were obtained from the reaction of triphenylbismuth with hydrogen ...
    • Facilitation of DNA loop formation by protein–DNA non-specific interactions 

      Shin, Jaeoh; Kolomeisky, Anatoly B. (2019)
      Complex DNA topological structures, including polymer loops, are frequently observed in biological processes when protein molecules simultaneously bind to several distant sites on DNA. However, the molecular mechanisms of ...
    • Fast Step Transition and State Identification (STaSI) for Discrete Single-Molecule Data Analysis 

      Shuang, Bo; Cooper, David; Taylor, J. Nick; Kisley, Lydia; Chen, Jixin; Wang, Wenxiao; Li, Chun Biu; Komatsuzaki, Tamiki; Landes, Christy F. (2014)
      We introduce a step transition and state identification (STaSI) method for piecewise constant single-molecule data with a newly derived minimum description length equation as the objective function. We detect the step ...
    • Ferromagnetism in Graphene Nanoribbons: Split versus Oxidative Unzipped Ribbons 

      Rao, S.S.; Jammalamadaka, S. Narayana; Stesmans, A.; Moshchalkov, V.V.; van Tol, J.; Kosynkin, D.V.; Higginbotham, A.; Tour, J.M. (2012)
      Two types of graphene nanoribbons: (a) potassium-split graphene nanoribbons (GNRs), and (b) oxidative unzipped and chemically converted graphene nanoribbons (CCGNRs) were investigated for their magnetic properties using ...
    • Fluctuating mobility generation and transport in glasses 

      Wisitsorasak, Apiwat; Wolynes, Peter G. (2013)
      In the context of the random first order transition theory we use an extended mode coupling theory of the glass transition that includes activated events to account for spatiotemporal structures in rejuvenating glasses. ...
    • Fluorescence Correlation Spectroscopy Study of Protein Transport and Dynamic Interactions with Clustered-Charge Peptide Adsorbents 

      Daniels, Charlisa R.; Kisley, Lydia; Kim, Hannah; Chen, Wen-Hsiang; Poongavanam, Mohan- Vivekanandan; Reznik, Carmen; Kourentzi, Katerina; Willson, Richard C.; Landes, Christy F. (2012-08)
      Ion-exchange chromatography (IEX) relies on electrostatic interactions between the adsorbent and the adsorbate, and is used extensively in protein purification. Conventional IEX utilizes ligands that are singly charged and ...
    • Fluorinated h-BN as a magnetic semiconductor 

      Radhakrishnan, Sruthi; Das, Deya; Samanta, Atanu; de los Reyes, Carlos A.; Deng, Liangzi; Alemany, Lawrence B.; Weldeghiorghis, Thomas K.; Khabashesku, Valery N.; Kochat, Vidya; Jin, Zehua; Sudeep, Parambath M.; Martí, Angel A.; Chu, Ching-Wu; Roy, Ajit; Tiwary, Chandra Sekhar; Singh, Abhishek K.; Ajayan, Pulickel M. (2017)
      We report the fluorination of electrically insulating hexagonal boron nitride (h-BN) and the subsequent modification of its electronic band structure to a wide bandgap semiconductor via introduction of defect levels. The ...
    • From tunable core-shell nanoparticles to plasmonic drawbridges: Active control of nanoparticle optical properties 

      Byers, Chad P.; Zhang, Hui; Swearer, Dayne F.; Yorulmaz, Mustafa; Hoener, Benjamin S.; Huang, Da; Hoggard, Anneli; Chang, Wei-Shun; Mulvaney, Paul; Ringe, Emilie; Halas, Naomi J.; Nordlander, Peter; Link, Stephan; Landes, Christy F. (2015)
      The optical properties of metallic nanoparticles are highly sensitive to interparticle distance, giving rise to dramatic but frequently irreversible color changes. By electrochemical modification of individual nanoparticles ...
    • Frustration in biomolecules 

      Ferreiro, Diego U.; Komives, Elizabeth A.; Wolynes, Peter G. (2014)
      Biomolecules are the prime information processing elements of living matter. Most of these inanimate systems are polymers that compute their own structures and dynamics using as input seemingly random character strings of ...
    • Full-waveform inversion of triplicated data using a normalized-correlation-coefficient-based misfit function 

      Tao, Kai; Grand, Stephen P.; Niu, Fenglin (2017)
      In seismic full-waveform inversion (FWI), the choice of misfit function determines what information in data is used and ultimately affects the resolution of the inverted images of the Earth's structure. Misfit functions ...