Results 231 to 240 of about 59,661 (294)

Exciton Radiative Lifetimes in Hexagonal Diamond Ge and SixGe1–x Alloys

Advanced Optical Materials, EarlyView.
Strong room‐temperature photoluminescence reported in hexagonal Ge conflicts with theory predicting a nearly dark band edge. First‐principles calculations of excitonic radiative lifetimes fill a key gap in this debate, showing that pristine hexagonal Ge remains intrinsically weakly emissive, while Si alloying only modestly shortens the lifetime and ...
Michele Re Fiorentin, Michele Amato, Maurizia Palummo   +2 more
wiley   +1 more source

Dynamic Covalent Networks of Molecular Clusters for Hard and Impact-Resistant Glass with Feasible Processability. [PDF]

Adv Sci (Weinh)
Xiao H, Yin JF, Lan L, Liu-Fu W, Yin P.
europepmc   +1 more source

Optical Manipulation of Whispering Gallery Mode Microlasers for Controlled Cellular Delivery

Advanced Optical Materials, EarlyView.
Optically trapped whispering‑gallery microlasers are precisely positioned onto non‐phagocytic mammalian cells to report local refractive‑index changes in real time. Time‑dependent wavelength shifts reveal successive stages from membrane contact to internalization.
Soraya Caixeiro, Paloma Rodríguez‐Sevilla, Kishan Dholakia, Malte C. Gather   +3 more
wiley   +1 more source

Research Progress in the Evaluation of Thermal Shock Resistance of Refractories: From Theoretical Evolution to Intelligent Characterization. [PDF]

Materials (Basel)
Wang G, Ren B, Liu J, Wang E, Hou X, Chen M.   +5 more
europepmc   +1 more source

Modulus‐Switchable Miniature Robots for Biomedical Applications: A Review

Advanced Robotics Research, EarlyView.
Materials, robot designs, proof‐of‐concept functions, and biomedical applications of modulus‐switchable miniature robots. Miniature soft robots have shown great potential in biomedical applications due to their excellent controllability and suitable mechanical properties in biological environments.
Chunyun Wei, Yibin Wang, Jiangfan Yu
wiley   +1 more source

Frequency domain analysis of torsional vibration of single pile in orthotropic viscoelastic layered foundation. [PDF]

Sci Rep
Lian Z, Zhu Y, Jiu Y.
europepmc   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

The Preparation and CO₂-Resistant Performance of a Smart Responsive Polymer Gel for CO₂ Flooding Channel Blocking. [PDF]

Molecules
Meng X, Zhao M, Ma Z, Xu X, Xu Z, Xie Y, Wu Y, Wang Z, Ren W, Zhang H.   +9 more
europepmc   +1 more source

Piezoresistivity Enhancement by Graphite Flake Alignment in Thin Composite Films for Dielectric Elastomer Switches

Advanced Robotics Research, EarlyView.
This article presents dielectric elastomer switch (DES) materials, based on composite thin films. Alignment of graphite flakes due to their physical confinement within the thin films lead to much stronger piezoresistive responses than bulk composites, while their durability exceeds that of conventional liquid‐based DES materials.
Lingyu Liu, Thomas Kister, Bart‐Jan Niebuur, Tobias Kraus   +3 more
wiley   +1 more source

The Effects of Coupling Factors on the Variable Loading Resistance of Plain-Woven Ultra-High Molecular Weight Polyethylene Fabric Composites. [PDF]

Polymers (Basel)
Zhou Z, Han F, Dong B, Zhai W.
europepmc   +1 more source