Results 101 to 110 of about 151,983 (299)

Advances of piezoelectric biomaterials in bone defect repair: The role of direct and inverse piezoelectric effect

Journal of Orthopaedic Translation
Natural bone exhibits piezoelectric properties due to its collagen structure. Piezoelectric biomaterials, which can replicate the electromechanical behavior of bone, have thus become a key focus in the development of artificial biomaterials.
Yuqi Dong, Sijia Zhang, Tingyu Xu, Wei Sun, Xiaohan Liu   +4 more
doaj   +1 more source

Enhancement of Photoemission on P-type GaAs using Surface Acoustic Waves

, 2019
We demonstrate that photoemission properties of GaAs photocathodes (PCs) can be altered by surface acoustic waves (SAWs) generated on the PC surface due to dynamical piezoelectric fields of SAWs.
Afanasev, Andrei, Dong, Boqun, Johnson, Rolland P., Zaghloul, Mona E.   +3 more
core   +1 more source

Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives

Advanced Materials, EarlyView.
Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi, Mario Palacios‐Corella, Arjan Mol, Salvador Pané, Josep Puigmartí‐Luis   +4 more
wiley   +1 more source

Giant Effective charges and Piezoelectricity in Gapped Graphene

, 2019
Since the first realization of reversible charge doping in graphene via field-effect devices, it has become evident how the induction a gap could further enhance its potential for technological applications.
Barone, Paolo, Benfatto, Lara, Bistoni, Oliviero, Cappelluti, Emmanuele, Mauri, Francesco   +4 more
core   +1 more source

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

Advanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau, Christian N. Saggau, Stefan Baunack, Thomas Gemming, Yara Abdelaal, Robert Weser, Oliver G. Schmidt, Hagen Schmidt, Andreas Winkler, Mariana Medina‐Sánchez   +9 more
wiley   +1 more source

Understanding and tuning negative longitudinal piezoelectricity in hafnia

npj Computational Materials
Most piezoelectric materials exhibit a positive longitudinal piezoelectric effect (PLPE), while a negative longitudinal piezoelectric effect (NLPE) is rarely reported or paid much attention.
Huirong Jing, Chaohong Guan, Hong Zhu
doaj   +1 more source

Highly Sensitive Impact Sensor Based on PVDF-TrFE/Nano-ZnO Composite Thin Film

Sensors, 2019
A thin film of polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) has good flexibility and simple preparation process. More importantly, compared with PVDF, its piezoelectric β-phase can be easily formed without mechanical stretching.
Jing Han, Dong Li, Chunmao Zhao, Xiaoyan Wang, Jie Li, Xinzhe Wu   +5 more
doaj   +1 more source

Performance of transducers with segmented piezoelectric stacks using materials with high electromechanical coupling coefficient

, 2013
Underwater acoustic transducers often include a stack of thickness polarized piezoelectric material pieces of alternating polarity interspersed with electrodes, bonded together and electrically connected in parallel.
Markley, Douglas C., Meyer, Richard J., Thompson, Stephen C.   +2 more
core   +1 more source

Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection

Advanced Materials, EarlyView.
Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel, Haotian Lu, Jiayan Zhang, Desheng Yao, Ananya Bhardwaj, Ramiro Contreras, Karim Sabra, Xiaoyu (Rayne) Zheng   +7 more
wiley   +1 more source

Influence of corona charging in cellular polyethlene film

, 2011
[En] Cellular polymers have recently attracted attention for their property of exhibiting a piezoelectric constant when they are electrically charged.
Llovera Segovia, Pedro, Magraner Bella, Francisco, Ortega Braña, Gustavo Eloy, Quijano Lopez, Alfredo   +3 more
core   +1 more source