Results 131 to 140 of about 1,987,184 (244)

Influence of dispersive coupling coefficient in microring channel drop filters

, 2006
Wide transmission dips are observed in the through spectra in microring and racetrack channel drop filters by two-dimensional finite-difference time-domain (FDTD) simulation.
Chen, Q, Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, POB 912, Beijing 100083, Peoples R China., Huang YZ (Huang Yong-Zhen), Yang YD (Yang Yue-De), Chen Q (Chen Qin)   +3 more
core  

High‐Performance Piezoresistive Sensors via Pd/Sn‐Free Graphene‐Catalyzed Metallization of Thermally Repairable Microfiber Scaffolds

Advanced Science, EarlyView.
The multilayer fiber‐based PGC sensor, fabricated via graphene‐mediated electroless copper deposition, demonstrates high sensitivity, mechanical durability, and fast response speed. Additionally, it features low‐temperature thermal assisted recovery and thermal resistance, providing a promising platform for wearable electronic devices and IoT ...
ByungJun Kim, Su Bin Choi, Yeonwook Jeong, Jeong‐Won Yoon, Seung‐Boo Jung, Jong‐Woong Kim   +5 more
wiley   +1 more source

The electromechanical coupling analysis model of spherical collision triboelectric nanogenerator

The spherical collision triboelectric nanogenerator (SC-TENG) exhibits dual effects of vibration control and energy harvesting. To study the vibration control and energy harvesting characteristics of SC-TENG at the same time, this paper proposes a single
Qi Li, Yang Wenzha, Jiajie Yan, Jiahong Lin, Chenxuan Tang, Wenhui Jin, Chao Yang, Junlin Li   +7 more
core   +1 more source

Customized Itinerant Frequency Combs by Cascaded Nonlinear Effects

Advanced Science, EarlyView.
A cascaded third‐order nonlinear system generates an itinerant frequency comb with the comb center frequency decoupled from the cavity resonance. This enables arbitrary spectral scaling, flexible spacing adjustments, and real‐time central‐frequency engineering, allowing comb splicing and subdivision. The resulting versatility and reconfigurability open
Yi Wang, Yulong Liu, Zeji Li, Wenyan Wang, Sihan Wang, Cheng Wang, Jingwei Zhou, Jie‐Qiao Liao, Tiefu Li   +8 more
wiley   +1 more source

Shear‐Mode Direct Piezoelectric Response of Ferroelectric Nematic Liquid Crystals

Advanced Science, EarlyView.
Periodic shear‐induced electric current measurements are reported on two archetypic ferroelectric nematic liquid crystal compounds. From the temperature, frequency and shear angle dependent results of the first and second harmonic current signals together with temperature and oscillatory rheology measurements, the effective piezoelectric coupling ...
Péter Salamon, Marcell Tibor Máthé, Hiroya Nishikawa, Fumito Araoka, Antal Jákli   +4 more
wiley   +1 more source

Bio‐Inspired Internal Stress Engineering for Microscale Surface Cracking in Sensitive Strain Sensors

Advanced Science, EarlyView.
This study presents a bio‐inspired internal stress engineering strategy to fabricate highly sensitive crack‐based strain sensors. By harnessing the internal expansion energy of microspheres and the thickness‐dependent brittle‐to‐ductile transition of ultrathin gold films, tunable microscale cracks are generated.
Jae Yeong Jang, Hanchul Cho, Young Jung
wiley   +1 more source

INFLUENCE OF THE POLING FIELD ON THE ELECTROMECHANICAL COUPLING FACTOR OF PZT CERAMIC DOPED WITH La203.

, 1995
Lead zirconate titanate (PbZrO.53 Ti0.4703), near the morphotropic phase boundary, doped with 2.5% mol La203 was prepared using either standard ceramic or hot pressing techniques.
BE Watts, I Chebotarieva, F Leccabue, F Calderon   +3 more
core  

Bio‐Inspired Gradient Heterogeneous Architectures for Ultrasensitive and Robust Strain Sensors via Programmable Crack Engineering

Advanced Science, EarlyView.
Inspired by the insect campaniform sensillum, a heterogeneous bilayer strain sensor is developed based on a unique impedance mismatch and three‐dimensional structural dynamic percolation strategy. The sensor enables real‐time multi‐joint teleoperation of three joints and the gripper using a six‐degree‐of‐freedom robotic‐arm platform.
Qi Wu, Tiantong Wang, Yinhao Wang, Yanggang Feng, Yan Huang   +4 more
wiley   +1 more source

Beyond‐Classical Ferroelectric Metamaterials: 3D‐Printed Planar Lattices With Programmable Electro–Thermo–Mechanical Coupling

Advanced Science, EarlyView.
Planar ferroelectric lattices with rationally‐tailored topology and polarization achieve programmable piezoelectric and pyroelectric properties. Analytical modeling, homogenization, and experiments collectively demonstrate enhanced and tunable longitudinal, transverse, and shear piezoelectric responses, together with substantially improved ...
Jiahao Shi, Kang Ju, Haoyu Chen, Valerie Orsat, Agus P. Sasmito, Ali Ahmadi, Abdolhamid Akbarzadeh   +6 more
wiley   +1 more source

Engineering Spatially Localized Bioactive Microenvironments in Assembly Implants for Spatially Extended Bone Ingrowth

Advanced Science, EarlyView.
An assembly porous titanium/β‐TCP implant is developed to establish a spatially programmable osteogenic microenvironment for enhanced osseointegration. By decoupling mechanical support from bioactive ion release, localized ionic gradients generated from the β‐TCP module direct osteogenic activity and bone ingrowth toward the porous titanium framework ...
Heng Zhang, Jingjing Diao, Junhua Ke, Naru Zhao, Yudi Kuang, Yingjun Wang   +5 more
wiley   +1 more source