Results 121 to 130 of about 305,462 (305)

A millimeter-wave kinetic inductance detector camera for long-range imaging through optical obscurants [PDF]

open access: yes, 2020
Millimeter-wave imaging provides a promising option for long-range target detection through optical obscurants such as fog, which often occur in marine environments.
Bhandarkar, Tanay A.   +12 more
core  

Mechanoregulatory Effects of Cell‐Scale Microwells on Epithelial Cell Phenotype

open access: yesAdvanced Functional Materials, EarlyView.
In small polycaprolactone microwells, A549 epithelial cells span well edges, in contrast to cells growing on flat substrates. Focal adhesion sites (yellow) concentrate at topographic boundaries, while cytoskeletal tension (magenta stress fibers) is transmitted to the nucleus (blue), reducing nuclear sphericity.
Ruiwen He   +10 more
wiley   +1 more source

Amplifier circuit for a silicon-photomultiplier-coupled plastic scintillator detector

open access: yesHe jishu
BackgroundThe silicon photomultiplier (SiPM) is sensitive to environmental noise, its performance is greatly affected by ambient noise.PurposeThis study aims to design a negative-feedback selective amplifier circuit for SiPM coupled plastic scintillator ...
TANG Chenyang   +5 more
doaj   +1 more source

Noise tests of a high-aspect-ratio slot nozzle with various V-gutter target thrust reversers [PDF]

open access: yes
The results of experiments on the noise generated by a 1.33- by 91.4 cm slot nozzle with various V-gutter reversers, and some thrust measurements are presented.
Gutierrez, O. A., Stone, J. R.
core   +1 more source

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

open access: yesAdvanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source

Carbon Contacts to Proteins Enable Robust, Biocompatible Electronic Junctions with Near‐Activation‐less Conduction Down to 10 K

open access: yesAdvanced Functional Materials, EarlyView.
A robust solid‐state protein junction with a semi‐transparent eC/Au electrode allows photoexcitation of the bacterio‐rhodopsin, bR layer, to isomerize the bR retinal. The resulting photo‐response shows the protein is functional in the solid‐state junction.
Shailendra K. Saxena   +5 more
wiley   +1 more source

Noise characteristics of a 750-MHz electronically tunable resonator for electron paramagnetic resonance spectroscopy

open access: yesAIP Advances, 2019
This paper describes an experimental investigation of the noise characteristics of a 750-MHz electronically tunable resonator for electron paramagnetic resonance (EPR) spectroscopy.
Ririko Nakaoka, Hiroshi Hirata
doaj   +1 more source

On-ground tests of LISA PathFinder thermal diagnostics system

open access: yes, 2006
Thermal conditions in the LTP, the LISA Technology Package, are required to be very stable, and in such environment precision temperature measurements are also required for various diagnostics objectives.
A Lobo   +18 more
core   +2 more sources

Prenucleation Species Dictate Foreign Ion Incorporation in the Biomineral Precursor Amorphous Calcium Carbonate

open access: yesAdvanced Functional Materials, EarlyView.
ACC forms via aggregating prenucleation clusters that gatekeep its chemical composition. Ion identity steers the path: Ba and Sr substitute Ca in clusters, thereby inhibiting nucleation, with a dose‐dependent switch of Sr to induction. Mg partitions into Mg‐rich and Mg‐poor clusters; the latter form ACC, expelling Mg.
Qianyu Zhao   +9 more
wiley   +1 more source

Electrocatalytic Reduction of CO2 to Ethylene: Catalyst Design and Synchrotron‐Based Characterizations

open access: yesAdvanced Functional Materials, EarlyView.
This review evaluates strategies for electrochemical CO2 reduction to ethylene, focusing on copper‐based catalyst design and microenvironment modulation to achieve industrial‐grade performance. By leveraging operando synchrotron‐based characterizations, we provide a multiscale understanding of dynamic structural transformations and key reaction ...
Meng Zhang, Zuolong Chen, Yimin A. Wu
wiley   +1 more source

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