Results 71 to 80 of about 7,576 (231)

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Moving load on elastic structures: Passage through the wave speed barriers

, 2010
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The asymptotic behaviour of an elastically supported infinite string and an elastic isotropic half plane (in frames of specific asymptotic model) under a ...
Voloshin, Vitaly
core  

A Skin‐Like Strain Sensor for Real‐Time Human Motion Detection

Advanced Functional Materials, EarlyView.
A skin‐like strain sensor with exceptional flexibility and breathability enables real‐time human motion detection. It offers continuous ECG monitoring and gesture recognition, ensuring high durability and comfort. This innovative design is ideal for wearable applications, combining reliable performance with seamless integration into dynamic ...
Shiqi Song, Zhe Li, Jingya Guo, Shuo Shi, Jian Fang, Xungai Wang   +5 more
wiley   +1 more source

Solution‐Processed Thin‐Film Transistors With Tunable Temporal Dynamics for Neuromorphic Computing

Advanced Functional Materials, EarlyView.
Solution‐processed CNT and CNT/P3HT ion‐gated transistors exhibit materials‐defined synaptic timescales: fast CNT devices for high‐frequency spiking and slow hybrid devices for temporal integration. Embedding these dynamics into coupled reservoir‐computing and spiking neural network simulations reveals that a Hybrid‐Reservoir / CNT‐SNN architecture ...
Kevin Schnittker, Haoyi Lin, Zahra Bahrami, Strahinja Marinkovic, Sung Hyun Lee, Joseph Andrews   +5 more
wiley   +1 more source

A Dual‐Functional Electrolyte Additive for Highly Reversible Zinc‐Ion Batteries

Advanced Functional Materials, EarlyView.
This study introduces tetrabutylammonium bromide (TBAB) as a dual‐function additive for aqueous zinc‐ion batteries. TBAB disrupts the hydrogen‐bond network of water while TBA+ adsorbs on Zn to improve interfacial wettability and regulate Zn2+ flux, resulting in suppressed dendrite growth and parasitic reactions. This synergy extended the lifespan of Zn|
Shirui Zhang, Shixun Wang, Jianen Zhang, Jun Liu, Jinfeng Xie, Wentao Tang, Li Guan, He Huang, Qi Xue, Chunyi Zhi   +9 more
wiley   +1 more source

Frequency-dependent, near-pole behavior of acoustic surface waves on a solid sphere

A laser vibrometer is used to measure waves generated by a piezoelectric transducer in a solid steel sphere. The spatial and temporal resolution make it possible to verify the theoretical dispersion relation of spherical surface waves. In particular, the
Van Damme, Bart, Spadoni, Alessandro
core   +1 more source

Powering Nanocrystal‐Based Heat Engines With Light‐Emitting Metasurfaces That Influence Their Temperature

Advanced Functional Materials, EarlyView.
Metasurfaces and other structured photonic environments can dramatically modify the absorption and/or light emission of semiconductors. However, the consequences of these changes on the temperature of the system are not well understood. The authors address this problem for colloidal nanocrystals and leverage their findings to convert light into ...
Hugo Kowalczyk, Yihao Yuan, Augustin Caillas, Amel Saidoun, Roméo Bonnet, Pascal Filloux, Emmanuel Lhuillier, Aloyse Degiron   +7 more
wiley   +1 more source

Dye‐Initiated Chirped Cholesteric Polymer Networks Exhibiting Broadband Dissipative Chiral Photonic Bands

Advanced Functional Materials, EarlyView.
A dye‐based photoinitiator acting as a structure‐directing element, guides the formation of a cholesteric polymer network that behaves as a chirped photonic structure with dissipative chiral coupling. Photopolymerization freezes a depth‐dependent helical pitch, broadening the Bragg resonance spectrum.
Alfredo Mazzulla, Pasquale Pagliusi, Gabriella Cipparrone   +2 more
wiley   +1 more source

Hybrid Solar Cell/Triboelectric Nanogenerator Based on Stable Two‐Dimensional Covalent Organic Frameworks

Advanced Functional Materials, EarlyView.
This study highlights the integration of stable two‐dimensional covalent organic framework (COF) films as photoactive layers in hybrid nanoenergy devices. The results demonstrate their capacity to generate electricity under both sunny and rainy conditions, showcasing versatility and resilience.
Joab D. Guerrero, Susana Ramos‐Terrón, Salvador R. G. Balestra, José M. Malagón, David Aparicio, Lucia Velasco, Asterios Charisiadis, Dooshaye Moonshiram, Margarita Darder, Pilar Aranda, Bernd Wicklein, Gustavo de Miguel, Javier Pérez‐Carvajal, Eva M. García‐Frutos   +13 more
wiley   +1 more source

Application of wavelet analysis in tool wear evaluation using image processing method

, 2018
Tool wear plays a significant role for proper planning and control of machining parameters to maintain the product quality. However, existing tool wear monitoring methods using sensor signals still have limitations.
Sia, Chee Kiong, Tuan Muda, Syed Mohamad Aiman, Ong, Pauline, Talib, Norfazillah, Saleh, Aslinda, Lee, Woon Kiow   +5 more
core   +1 more source