Results 101 to 110 of about 1,363 (225)

Scalable Room‐Temperature Terahertz Graphene Cameras

Small Methods, EarlyView.
ABSTRACT Terahertz (THz) imaging has emerged as a powerful tool for non‐destructive, label‐free analysis across several scientific disciplines, ranging from materials science to biomedical research. By capturing the spatial‐dependent information in a broad range of frequencies, this technique enables the identification of chemical composition ...
Lili Shi, Leonardo Viti, Miriam S. Vitiello   +2 more
wiley   +1 more source

Seed layer formation by deposition of micro‐crystallites on a revolving substrate. Part II: application to some nonlinear effects

Acta Crystallographica Section B, EarlyView.
A method of averaging the material coefficients of crystallites deposited at an angle onto a revolving substrate isapplied to effective nonlinear dielectric, piezoelectric and elastic constants, as well as linear pyroelectric coefficients, for triclinic crystals.The matrix method of averaging material coefficients of crystallites deposited at an angle ...
Arthur Ballato, John Ballato
wiley   +1 more source

Spectral characterization of three wearable electronic ultraviolet radiation dosimeters

Photochemistry and Photobiology, EarlyView.
Excessive exposure to ultraviolet radiation poses significant public health risks, including DNA damage and skin‐related pathologies. Wearable electronic UV dosimeters enable accurate studies and quantification of solar UV‐radiation exposure on an individual level. Due to variations in the spectral distribution of solar radiation, the spectral mismatch
Leevi August, Gregor Hülsen, Juha Peltoniemi, Petri Kärhä, Erkki Ikonen   +4 more
wiley   +1 more source

Device Simulation of Hole Transport in 233 nm Multiquantum Well AlGaN‐Based UV LED

physica status solidi (a), Volume 223, Issue 17, 9 September 2026.
Deep‐UV LEDs suffer from low hole injection efficiency. In this work, electro optical simulations of AlGaN DUV LEDs with 6, 12, and 21 quantum wells, emitting at 233 nm, reveal efficient inter‐well hole transport within the active multiple quantum well region. The data are consistent with experimental findings.
Ibrahim Marouf, Friedhard Römer, Marcel Schilling, Franz Biebler, Jakob Höpfner, Massimo Grigoletto, Tim Wernicke, Michael Kneissl, Bernd Witzigmann   +8 more
wiley   +1 more source

Nanopatterned Dual‐Carbon‐Dot Photonic Films With Enhanced Light Outcoupling

Advanced Optical Materials, Volume 14, Issue 33, 4 September 2026.
Nanoimprinted dual‐carbon‐dot/PVA films combine composition‐tunable blue–green emission with grating‐mediated directional light outcoupling. Water‐processable B‐CD and G‐CD composites are patterned by drying‐assisted nanoimprinting, producing angle‐selective emission peaks that follow the first‐order diffraction condition and exhibit reference ...
Gyudam Jeon, Heetae Ahn, Taeguen Kim, Na Young Ha   +3 more
wiley   +1 more source

Self-powered infrared detector enabled by interfacial anchoring and thermal reinforcement

Nano Trends
Pyroelectricity enables autonomous perception and remote detection in the field of infrared sensor, human machine interfacing and virtual reality. However, the low pyroelectric coefficient and inferior thermal conductivity hinders the energy conversion ...
Xiaolan Luo, Weixiong Li, Liu Yuan, Guangzhong Xie, Yuanjie Su   +4 more
doaj   +1 more source

Enhanced spontaneous polarization in directional interlayer sliding γ‐InSe for self‐powered, all‐day visual adaptation and motion perception

InfoMat, Volume 8, Issue 9, September 2026.
This study develops a retinal‐inspired optoelectronic sensor based on two‐dimensional γ‐InSe, wherein engineered interlayer sliding enhanced spontaneous polarization. The system utilizes the photo‐pyroelectric effect to simulate the snake's all‐day visual function.
Qingbin Wang, Yuanzheng Li, Hang Li, Chuxin Yan, Yongsheng Gao, Long Yang, Wei Xin, Ye Zhou, Haiyang Xu, Yichun Liu   +9 more
wiley   +1 more source

A critical review on polyvinylidene fluoride (PVDF)/zinc oxide (ZnO)-based piezoelectric and triboelectric nanogenerators

JPhys Energy
In this current energy crisis era, piezoelectric and triboelectric effects are emerging as promising technologies for energy harvesting. Polyvinylidene fluoride (PVDF) and its copolymers are well-known piezoelectric materials with high piezoelectric ...
Chirantan Shee, Swagata Banerjee, Satyaranjan Bairagi, Aiswarya Baburaj, Kumar S K Naveen, Akshaya Kumar Aliyana, Daniel M Mulvihill, R Alagirusamy, S Wazed Ali   +8 more
doaj   +1 more source

Bionic Tactile Skins for Robotics: Fundamentals, Advances, and Future Prospects

SmartSys, Volume 2, Issue 3, September 2026.
ABSTRACT Robotic bionic tactile skins (RBTSs), as crucial components of next‐generation robotic systems, have attracted significant attention in recent years. By enabling robots to achieve human‐like tactile perception and interact effectively with their surroundings, RBTSs play an essential role in enhancing robotic intelligence.
Jiajun Wu, Zitong Zhang, Xuhui Zhou, Yu Meng, Jie Ni, Junshan Liu, Faheng Zang, Xiaojun Guo, Zhuoqing Yang   +8 more
wiley   +1 more source

Distinct origins of electric-field-axis and polarization-axis asymmetries in ferroelectric hysteresis

Materials & Design
Ferroelectric hysteresis asymmetry critically influences switching stability, imprint, and preferential polarization states in nonvolatile electronic devices. However, hysteresis asymmetry is generally characterized only by horizontal loop shifts, partly
Jun Usami, Yoshiomi Hiranaga, Hiroyuki Yamada   +2 more
doaj   +1 more source