Results 61 to 70 of about 22,436 (254)

Electromechanical Imaging of Biological Systems with Sub-10 nm Resolution [PDF]

, 2005
Electromechanical imaging of tooth dentin and enamel has been performed with sub-10 nm resolution using piezoresponse force microscopy. Characteristic piezoelectric domain size and local protein fiber ordering in dentin have been determined. The shape of
A. Gruverman, B. J. Rodriguez, Bazhenov V. A., S. Jesse, Sergei V. Kalinin, T. Thundat   +5 more
core   +3 more sources

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

Design and analysis of innovative multi-frequency ultrasonic probe characteristics

Scientific Reports
This study presents the development of a novel multifrequency ultrasound probe distinguished by its broad bandwidth and high sensitivity. A comprehensive investigation was conducted using theoretical analysis, numerical simulations, and experimental ...
Yu-Lin Song, Tzu-Zin Lin, Shih Hsun Tu, Alexander Stiegler   +3 more
doaj   +1 more source

Effect of Pre-Polarization Process on the Apparent Piezoelectric Response Measured by Point-Ring Method in Ferroelectric Perovskite Oxide Ceramics

Energies, 2022
Both flexoelectricity and piezoelectricity belong to the electromechanical coupling effect. While piezoelectricity only exists in materials whose crystal structure is noncentrosymmetric and a pre-polarization process is necessary for ferroelectric ...
Yuanzhe Li, Xiang Huang, Junyu Tao, Jijie Huang, Weiming Xiong, Weijin Chen, Yue Zheng   +6 more
doaj   +1 more source

Microwave amplification with nanomechanical resonators

, 2011
Sensitive measurement of electrical signals is at the heart of modern science and technology. According to quantum mechanics, any detector or amplifier is required to add a certain amount of noise to the signal, equaling at best the energy of quantum ...
AA Clerk, AD O’Connell, AH Safavi-Naeini, AJ Leggett, B Yurke, C Genes, CA Regal, CH Metzger, CM Caves, D Rugar, DW Carr, F Marquardt, F. Massel, H. Saloniemi, HA Haus, I Wilson-Rae, J Sulkko, J.-M. Pirkkalainen, JD Teufel, JD Teufel, JP Raskin, M. A. Sillanpää, MA Castellanos-Beltran, MA Sillanpää, MJ Woolley, MO André, N Bergeal, O Arcizet, P. J. Hakonen, S Mancini, S Weis, S. U. Cho, T Rocheleau, T. T. Heikkilä, TJ Kippenberg, VB Braginsky, W Marshall   +36 more
core   +1 more source

Modeling thin-film piezoelectric polymer ultrasonic sensors [PDF]

, 2014
This paper presents a model suitable to design and characterize broadband thin film sensors based on piezoelectric polymers. The aim is to describe adequately the sensor behavior, with a reasonable number of parameters and based on well-known physical ...
Cardozo Santiago, Gustavo David, González, Martín Germán, Sorichetti, Patricio Aníbal   +2 more
core   +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

Magnetic Textiles: A Review of Materials, Fabrication, Properties, and Applications

Advanced Materials Technologies, EarlyView.
Magnetic textiles (M‐textiles) are emerging as a programmable materials platform that merges magnetic matter with hierarchical textile structures. This article consolidates magnetic material classes, textile architectures, and fabrication and magnetization strategies, revealing structure–property–function relationships that govern magneto‐mechanical ...
Li Ke, Moses Kumi, Xiaoming Tao, Junhong Pu   +3 more
wiley   +1 more source

Electrode design for multimode suppression of aluminum nitride tuning fork resonators

Nanotechnology and Precision Engineering, 2023
This paper is focused on electrode design for piezoelectric tuning fork resonators. The relationship between the performance and electrode pattern of aluminum nitride piezoelectric tuning fork resonators vibrating in the in-plane flexural mode is ...
Yi Yuan, Qingrui Yang, Haolin Li, Shuai Shi, Pengfei Niu, Chongling Sun, Bohua Liu, Menglun Zhang, Wei Pang   +8 more
doaj   +1 more source