Results 51 to 60 of about 22,841 (273)

A Piezoelectric Molecular Cocrystal with Unconventional π-Stacking

Crystal Growth & Design
We demonstrate the crystallization of a polar octafluoronaphthalene (OFN, \OFN)--phthalazine (Phth, \Phth) cocrystal, formed in a 1:2 ratio by slow evaporation. The crystal structure and vibrational properties of the cocrystal were determined using powder/single-crystal X-ray diffraction (XRD) and Fourier-Transform Infrared (FTIR) spectroscopy, and ...
Samuel G. Dunning, Aldo Raeliarijaona, Piotr A. Guńka, Anirudh Hari, Dongzhou Zhang, R. E. Cohen, Timothy A. Strobel   +6 more
openaire   +2 more sources

CHARACTERIZATION OF PIEZOELECTRIC STACK ACTUATORS FOR VIBROTHERMOGRAPHY

AIP Conference Proceedings, 2011
Vibrothermography, also known as Sonic IR and thermosonics, is an NDE technique for finding cracks and flaws based on vibration‐induced frictional rubbing of unbonded surfaces. The vibration is usually generated by a piezoelectric stack actuator which transduces electrical energy into large amplitude mechanical vibrations.
Jyani Vaddi, Ricky Reusser, Stephen D. Holland, Donald O. Thompson, Dale E. Chimenti   +4 more
openaire   +2 more sources

Two‐Dimensional Materials as a Multiproperty Sensing Platform

Advanced Functional Materials, EarlyView.
Various sensing modalities enabled and/or enhanced by two‐dimensional (2D) materials are reviewed. The domains considered for sensing include: 1) optoelectronics, 2) quantum defects, 3) scanning probe microscopy, 4) nanomechanics, and 5) bio‐ and chemosensing.
Dipankar Jana, Shubhrasish Mukherjee, Dmitrii Litvinov, Magdalena Grzeszczyk, Sergey Grebenchuk, Makars Šiškins, Virgil Gavriliuc, Yihang Ouyang, Changyi Chen, Yuxuan Ye, Meng Yiming, Maciej Koperski   +11 more
wiley   +1 more source

Reconfigurable Magnetic Soft Microrobot for Acoustically Triggered Targeted Bacterial Sterilization

Advanced Functional Materials, EarlyView.
Reconfigurable magnetic soft microrobots integrate in situ‐grown piezoelectric zinc oxide nanorods that produce reactive oxygen species upon acoustic excitation. Combining magnetically guided transport with thermally induced planar reconfiguration, the microrobots achieve targeted delivery and enhanced bacterial sterilization through efficient on ...
Quan Gao, Fan Li, Jiajie Gao, Elric Zhang, Yingdong Su, Ni Qin, Hao Ye, Josep Puigmartí, Giuseppe Cantarella, Simone Schuerle, Jiang Wu, Bradley J. Nelson, Salvador Pané   +12 more
wiley   +1 more source

Measurement of the elastoresistivity coefficients of the underdoped iron-arsenide Ba(Fe$_{0.975}$Co$_{0.025}$)$_2$As$_2$

, 2013
A new method is presented for measuring terms in the elastoresistivity tensor $m_{ij}$ of single crystal samples with tetragonal symmetry. The technique is applied to a representative underdoped Fe-arsenide, Ba(Fe$_{0.975}$Co$_{0.025}$)$_2$As$_2 ...
Fisher, Ian R., Kuo, Hsueh-Hui, Riggs, Scott C., Shapiro, Maxwell C.   +3 more
core   +1 more source

Variable - temperature scanning optical and force microscope [PDF]

, 2004
The implementation of a scanning microscope capable of working in confocal, atomic force and apertureless near field configurations is presented. The microscope is designed to operate in the temperature range 4 - 300 K, using conventional helium flow ...
Betzig E., H. Zhu, J. Jevy, N. G. Patil, P. S. Fodor   +4 more
core   +3 more sources

Hot Pressed K0.5Na0.5NbO3 Material for Piezoelectric Transformer for Energy Harvesting [PDF]

Archives of Metallurgy and Materials, 2018
An optimized method of vibration Energy Harvesting is based on a step-down transformer that regulates the power flow from the piezoelectric element to the desired electronic load.
L. Kozielski, K. Feliksik, B. Wodecka-Duś, D. Szalbot, S. Tutu   +4 more
doaj   +1 more source

Laser‐Based Sculpturing of Embedded Ultrathin Metal‐Oxide Nanopores for Enhanced Biomolecular Sensing

Advanced Functional Materials, EarlyView.
Controlled laser‐drilling of embedded HfO2 membranes creates three layer nanopores with Gaussian‐shaped cavities sculptured in the supporting layers. These embedded solid‐state nanopores slow DNA translocation by 12‐fold compared to SiNx pores, enabling high‐resolution, label‐free detection of short DNAs, RNAs, and proteins.
Jostine Joby, Yulia Marom, Guocong Lin, Aleksandra Baron‐Wiechec, Amit Meller   +4 more
wiley   +1 more source

A Frequency Up-Conversion Piezoelectric Energy Harvester Shunted to a Synchronous Electric Charge Extraction Circuit

Micromachines
A frequency up-conversion piezoelectric energy harvester (FUC-PEH) consists of a force amplifier, a piezoelectric stack, a low-frequency oscillator (LFO), and a stop limiter.
Xuzhang Peng, Hao Tang, Zhongjie Li, Junrui Liang, Liuding Yu, Guobiao Hu   +5 more
doaj   +1 more source

Piezoelectric Hysteresis Modeling of Hybrid Driven Three-Dimensional Elliptical Vibration Aided Cutting System Based on an Improved Flower Pollination Algorithm

Micromachines, 2021
Three-dimensional elliptical vibration assisted cutting technology has been widely used in the past few years. The piezoelectric stack drive structure is an important part of the three-dimensional elliptical vibration aided cutting system.
Xifeng Fu, Hong Gong, Mingming Lu, Jiakang Zhou, Jieqiong Lin, Yongsheng Du, Ruiqi Zhou   +6 more
doaj   +1 more source