Correlation functions quantify super-resolution images and estimate apparent clustering due to over-counting

Kavli Affiliate: Barbara Baird | First 5 Authors: Sarah Veatch, Benjamin Machta, Sarah Shelby, Ethan Chiang, David Holowka | Summary: We present an analytical method to quantify clustering in super-resolution localization images of static surfaces in two dimensions. The method also describes how over-counting of labeled molecules contributes to apparent self-clustering and how the effective […]


Continue.. Correlation functions quantify super-resolution images and estimate apparent clustering due to over-counting

Finite Phase-separation FRET II: Determination of domain size from simulated data

Kavli Affiliate: Gerald W. Feigenson | First 5 Authors: Frederick A. Heberle, Gerald W. Feigenson, , , | Summary: We have developed a new model to describe FRET efficiency (E FRET) between freely-diffusing membrane probes in phase-separated bilayers (Finite Phase-separation FRET, or FP-FRET), that in principle applies to any system where phase domain dimensions are […]


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Finite Phase-separation FRET I: A quantitative model valid for bilayer nanodomains

Kavli Affiliate: Gerald W. Feigenson | First 5 Authors: Frederick A. Heberle, Gerald W. Feigenson, , , | Summary: Multicomponent lipid mixtures exhibit complex phase behavior, including coexistence of nanoscopic fluid phases in ternary mixtures mimicking the composition of the outer leaflet of mammalian plasma membrane. The physical mechanisms responsible for the small size of […]


Continue.. Finite Phase-separation FRET I: A quantitative model valid for bilayer nanodomains

Limited Perturbation of a DPPC Bilayer by Fluorescent Lipid Probes: A Molecular Dynamics Study

Kavli Affiliate: Gerald W. Feigenson | First 5 Authors: Frederick A. Heberle, David G. Ackerman, Gerald W. Feigenson, , | Summary: The presence and the properties of lipid bilayer nanometer-scale domains might be important for understanding the membranes of living cells. We used molecular dynamics (MD) simulations to investigate perturbations of a small patch of […]


Continue.. Limited Perturbation of a DPPC Bilayer by Fluorescent Lipid Probes: A Molecular Dynamics Study

Strong gate coupling of high-Q nanomechanical resonators

Kavli Affiliate: Jeevak Parpia | First 5 Authors: Jaakko Sulkko, Mika A. Sillanpää, Pasi Häkkinen, Lorenz Lechner, Meri Helle | Summary: The detection of mechanical vibrations near the quantum limit is a formidable challenge since the displacement becomes vanishingly small when the number of phonon quanta tends towards zero. An interesting setup for on-chip nanomechanical […]


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Effects of Levy Flights Mobility Pattern on Epidemic Spreading under Limited Energy Constraint

Kavli Affiliate: Dan Luo | First 5 Authors: Yanqing Hu, Dan Luo, Xiaoke Xu, Zhangang Han, Zengru Di | Summary: Recently, many empirical studies uncovered that animal foraging, migration and human traveling obey Levy flights with an exponent around -2. Inspired by the deluge of H1N1 this year, in this paper, the effects of Levy […]


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Tuning mechanical modes and influence of charge screening in nanowire resonators

Kavli Affiliate: Jeevak Parpia | First 5 Authors: Hari S. Solanki, Shamashis Sengupta, Sajal Dhara, Vibhor Singh, Sunil Patil | Summary: We probe electro-mechanical properties of InAs nanowire (diameter ~ 100 nm) resonators where the suspended nanowire (NW) is also the active channel of a field effect transistor (FET). We observe and explain the non-monotonic […]


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Linear and Nonlinear Optical constants of BiFeO_3

Kavli Affiliate: Darrell Schlom | First 5 Authors: Amit Kumar, R. Rai, Nikolas Podraza, Sava Denev, Mariola Ramirez | Summary: Using spectroscopic ellipsometry, the refractive index and absorption versus wavelength of the ferroelectric antiferromagnet Bismuth Ferrite, BiFeO_3 is reported. The material has a direct band-gap at 442 nm wavelength (2.81 eV). Using optical second harmonic […]


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Q factor in numerical simulations of DPSK with optical delay demodulation

Kavli Affiliate: Chris Xu | First 5 Authors: Xing Wei, Xiang Liu, Chris Xu, , | Summary: A simple model is used to estimate the Q factor in numerical simulations of differential phase shift keying (DPSK) with optical delay demodulation and balanced detection. It is found that an alternative definition of Q is needed for […]


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Potential of Mean Force between a Spherical Particle Suspended in a Nematic Liquid Crystal and a Substrate

Kavli Affiliate: Nicholas L. Abbott | First 5 Authors: Evelina B. Kim, Roland Faller, Qiliang Yan, Nicholas L. Abbott, Juan J. de Pablo | Summary: We consider a system where a spherical particle is suspended in a nematic liquid crystal confined between two walls. We calculate the liquid-crystal mediated potential of mean force between the […]


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