Results 51 to 60 of about 475,528 (298)

Ultrafast and spatially resolved studies of charge carriers in atomically-thin molybdenum disulfide

, 2012
Atomically-thin molybdenum disulfide is emerging as a new nanomaterial with potential applications in the fields of electronic and photonics. Charge carrier dynamics plays an essential role in determining its electronic and optical properties.
Bellus, Matthew Z., Chiu, Hsin-Ying, Kumar, Nardeep, Ruzicka, Brian A., Wang, Rui, Zhao, Hui   +5 more
core   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

An 11.8-fJ/Conversion-Step Noise Shaping SAR ADC with Embedded Passive Gain for Energy-Efficient IoT Sensors

Sensors, 2022
Herein, we present a noise shaping successive-approximation-register (SAR) analog-to-digital converter (ADC) with an embedded passive gain multiplication technique.
Changhyung Choi, Jong-Wook Lee
doaj   +1 more source

Magnonic charge pumping via spin–orbit coupling [PDF]

Nature Nanotechnology, 2014
The interplay between spin, charge, and orbital degrees of freedom has led to the development of spintronic devices like spin-torque oscillators, spin-logic devices, and spin-transfer torque magnetic random-access memories. In this development spin pumping, the process where pure spin-currents are generated from magnetisation precession, has proved to ...
Ciccarelli, Chiara, Hals, Kjetil Magne Dørheim, Irvine, Andrew, Novak, Vit, Tserkovnyak, Yaroslav, Kurebayashi, Hidekazu, Brataas, Arne, Ferguson, Andrew   +7 more
openaire   +5 more sources

Information processing with topologically protected vortex memories in exciton-polariton condensates

, 2014
We show that in a non-equilibrium system of an exciton-polariton condensate, where polaritons are generated from incoherent pumping, a ring-shaped pump allows for stationary vortex memory elements of topological charge $m = 1$ or $m = -1$.
Egorov, O. A., Liew, T. C. H., Ma, X., Shelykh, I. A., Sigurdsson, H.   +4 more
core   +1 more source

Coherent amplitudon generation in K_0.3MoO_3 through ultrafast inter-band quasi particle decay [PDF]

, 2006
The charge density wave system K_0.3MoO_3 has been studied using variable energy pump-probe spectroscopy, ellipsometry, and inelastic light scattering.
Artem A Tsvetkov, Biljakovic K, Daniele Fausti, Dodderi M Sagar, Grüner G, Paul H M van Loosdrecht, Peierls R E, Pouget J P, Sander van Smaalen, Schlenker C, Sing M, Sirbu S, Travaglini G, Tsvetkov A A, van Loosdrecht P H M   +14 more
core   +4 more sources

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Design and Implementation of High Frequency and Low-Power Phase-locked Loop

U.Porto Journal of Engineering, 2021
Phase-locked loop (PLL) operates at a high frequency and due to the increased switching rate of the circuits, the power consumption is high. Designing a PLL which consumes less power without compromising the frequency of operation is essential.
Premananda B. S., Dhanush T. N., Vaishnavi S. Parashar, D. Aneesh Bharadwaj   +3 more
doaj   +1 more source

Single-parameter nonadiabatic quantized charge pumping [PDF]

Physical Review B, 2008
Controlled charge pumping in an AlGaAs/GaAs gated nanowire by single-parameter modulation is studied experimentally and theoretically. Transfer of integral multiples of the elementary charge per modulation cycle is clearly demonstrated. A simple theoretical model shows that such a quantized current can be generated via loading and unloading of a ...
B. Kaestner, V. Kashcheyevs, S. Amakawa, M. D. Blumenthal, L. Li, T. J. B. M. Janssen, G. Hein, K. Pierz, T. Weimann, U. Siegner, H. W. Schumacher   +10 more
openaire   +2 more sources

Substrate specificity of Burkholderia pseudomallei multidrug transporters is influenced by the hydrophilic patch in the substrate‐binding pocket

FEBS Letters, EarlyView.
Multidrug transporters BpeB and BpeF from the Gram‐negative pathogen Burkholderia pseudomallei have a hydrophilic patch in their substrate‐binding pocket. Drug susceptibility tests and growth curve analyses using an Escherichia coli recombinant expression system revealed that the hydrophilic patches of BpeB and BpeF are involved in the substrate ...
Ui Okada, Satoshi Murakami
wiley   +1 more source