Results 61 to 70 of about 439 (222)

Self‐Powered Flexible Triboelectric‐Gated Ion‐Gel Transistor for Neuromorphic Tactile Sensing and Human Activity Recognition

Advanced Materials, EarlyView.
A fully flexible ion‐gel‐gated graphene‐channel transistor driven by a triboelectric nanogenerator enables self‐powered tactile sensing and synaptic learning. Mimicking spike‐rate‐dependent plasticity, the device exhibits frequency‐selective potentiation and depression, supporting rate‐coded neuromorphic computation even under flex.
Hanseong Cho, Seoyeon Park, Youngmin Lee, Sejoon Lee   +3 more
wiley   +1 more source

Increased Usable Frequency Band for Underwater Transducers with Single Crystal

, 2020
In the increasing market of transducers for small underwater platforms, each transducer should be used for several purposes, hence cover as large frequency range as possible.
Frank Tichy, Hoff, Lars, Else-Marie Asjord, Martin Bring, Andersen, Kenneth Kirkeng, Bring, Martin, Røed, Ellen Katrine Sagaas, Åsjord, Else-Marie, Tichy, Frank, Lars Hoff, Kenneth Kirkeng Andersen, Ellen Sagaas Roed   +11 more
core   +1 more source

Nocturnal Intraocular Pressure Monitoring With a Soft Contact Lens Sensor for Glaucoma Management

Advanced Materials, EarlyView.
A soft contact lens sensor enables continuous, noninvasive monitoring of nocturnal intraocular pressure (IOP) under closed‐eye sleep conditions. By integrating a highly compliant inductive–capacitive circuit onto a commercial lens, the device achieves record sensitivity and stable performance.
Yumin Dai, Tristan Michael Long, Oluwabunmi T. Oladele, Youngoh Lee, Feiyang Li, Ziheng Wang, Yeonji Oh, Junsang Lee, Taewoong Park, Tianhao Yu, Seokkyoon Hong, Kyeonghee Lim, Jinheon Jeong, Dawn Meyer Schneider, Hyerim Ra, Bryan W. Boudouris, Gillian C. Shaw, Shin Ae Park, Pete S. Kollbaum, Chi Hwan Lee   +19 more
wiley   +1 more source

Solid‐State Nanopore Characterization of Dendrimer‐Peptide Conjugates Across Defined Peptide Loadings

Advanced Materials Interfaces, EarlyView.
Solid‐state nanopores are used to interrogate dendrimer‐peptide conjugates with systematically varied peptide loading. Single‐particle ionic current signatures reveal how ligand density modulates deformability, transport pathways, and electromechanical coupling during translocation.
Chaoming Gu, Jin Woong Lee, Kamruzzaman Joty, Marisela Leon, Santosh Khatri, Janeesha Manawasinghe, Seungpyo Hong, Min Jun Kim   +7 more
wiley   +1 more source

High-Performance and Thermally Robust A₁-Mode Lamb Wave Resonators on Bonded LiNbO₃/SiC Membranes

Micromachines
In radiofrequency filters, there is an increasing demand for high-frequency, wide-bandwidth operation. Recently, laterally excited A1-mode Lamb wave resonators (XBARs) have attracted significant attention; however, freestanding structures are ...
Noriyuki Watanabe, Shoji Kakio, Yoshiki Sakaida, Hidehiko Oku, Shigeomi Hishiki   +4 more
doaj   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Design of Piezoelectric Energy Harvesters with Different Electromechanical Couplings

, 2017
本論文旨在設計與探討不同力電耦合強度之壓電振子應用於能量擷取，並提供一些方法可用於實驗量測壓電振子應用於能量擷取之系統等效材料參數。壓電振動懸臂樑數學模型以能量法為基礎，採用模態函數或均佈力負載兩種形狀函數來簡化壓電振子設計，亦可引入等效電路模型，將壓電振動懸臂樑數學模型比擬成RLC電路。並採用雷利阻尼的概念來假設振子的等效機械阻尼係數，最後定義壓電振子之力電耦合強度為無因次化力電耦合係數除以無因次化機械阻尼係數。 本論文第一部分是比較由不同系統等效參數之估計曲線的差異 ...
莊為傑, Chuang, Wei-Chieh
core   +1 more source

Galinstan Liquid Metal/Polyurethane Composite as a Multifunctional Stretchable Electrode and Piezoresistive Strain Sensor With Minimal Drift

Advanced Materials Technologies, EarlyView.
Liquid metal additives are processed in elastomer host resulting in highly conductive and stretchable composites. The material functions as a piezoresistive sensor with minimal drift, low stiffness, and enhanced operating range. The film can replace wires to charge a mobile phone at ∼350% strain and monitors bodily motion in real‐time via a portable ...
Patryk Wojciak, Neeraj Kumar, Toby Hallam, Shayan Seyedin   +3 more
wiley   +1 more source

New piezoelectric shunt tuning method based on the effective electromechanical coupling coefficient: Validation and 3D implementation

, 2018
In the present work, a newly proposed resonant shunt tuning method is implemented in the commercial ANSYS® finite element (FE) code. For this purpose, the tuning method is written in a more general format that does not explicitly contain the resulting ...
Benjeddou, Ayech, Toftekær, Johan Frederik, Høgsberg, Jan   +2 more
core