Results 161 to 170 of about 2,878,811 (302)

3D‐Printed Gradient Shape‐Memory Strain Sensors With Rewritable Gauge Factors

open access: yesAdvanced Functional Materials, EarlyView.
A 3D‐printed shape‐memory strain sensor combines thermomechanical programming with gradient architectural design. Preset strain rewrites the gauge factor (GF), while the gradient geometry amplifies the response through strain redistribution. Reprogrammable sensitivity enables the same sensor to detect weak pulse signals and monitor large‐amplitude ...
Xuan Zhang   +10 more
wiley   +1 more source

Beam Domain Channel Estimation for Spatial Non-Stationary Massive MIMO Systems

open access: yes
In massive multiple-input multiple-output (MIMO) systems, the channel estimation scheme is subject to the spatial non-stationarity and inevitably power leakage in the beam domain. In this paper, a beam domain channel estimation scheme is investigated for
Hou, Lin   +4 more
core   +1 more source

Domain wall motion in stoichiometric LiTaO3 induced by low-energy electron beam

open access: yes, 2019
Scanning electron microscopy was used to study the mobility of domain walls in vapor-transport equilibrated stoichiometric LiTaO3. By using low-acceleration voltage, switching occurs solely for polarization pointing-up domains, resulting in fast domain ...
Canalias, Carlota,   +2 more
core  

Unitary acousto-optic beam splitters for frequency domain quantum information processing

open access: yes
We introduce a novel acousto-optic scattering-based scheme for frequency-domain beam splitting. Numerical simulations validate arbitrary qutrit operations and outline a pathway to high-dimensional gate synthesis.
Joseph M. Lukens   +5 more
core   +1 more source

Molecularly Dissipative Liquid Crystal Elastomer Foams for Impact and Vibration Attenuation

open access: yesAdvanced Functional Materials, EarlyView.
Liquid crystal elastomer foams integrate cellular deformation with mesogen reorientation to create a dual‐scale energy dissipation mechanism. Progressive pore collapse absorbs mechanical loads, while stress‐induced mesogen reorientation provides additional damping, resulting in reduced impact transmission and broadband suppression of vibrational ...
Subi Choi   +5 more
wiley   +1 more source

Beam, Jerry, March 7, 2009 [Interview]

open access: yes, 1930
Jerry Beam was interviewed on March 7, 2009, by Braxton Berkey about his experiences during World War II.World War ...
Beam, Jerry
core  

Beyond Thin Film Limits—Superhard and Hydrogen‐Free Amorphous Carbon Coatings With Over 100 µm Thickness

open access: yesAdvanced Functional Materials, EarlyView.
For the first time, an extreme‐thick laser‐arc PVD ta‐C (DLC) coating exceeding 100 µm is demonstrated, opening up new possibilities for ultra‐high load bearing capacity. This superhard amorphous carbon architecture combines >50% sp3 bonding, robust adhesion and self‐supporting performance, shielding substrates from plastic flow under extreme contact ...
Martin Zawischa   +3 more
wiley   +1 more source

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