Results 41 to 50 of about 5,809 (181)

Al1−xHfxN$\text{Al$_{1-x}$Hf$_{x}$N}$ Thin Films with Enhanced Piezoelectric Responses for GHz Surface Acoustic Wave Devices

Advanced Electronic Materials, EarlyView.
Reactively sputtered wurtzite Al1‐xHfxN thin films, exhibiting strong c‐axis texture and enhanced piezoelectric response, are demonstrated as a cost‐effective alternative to Al1‐xScxN. X‐ray absorption spectroscopy reveals that cross‐gap N 2p–Hf 5d hybridization increases the Born effective charge and enables a multifold increase in piezoelectric ...
Laura I. Wagner, Verena Streibel, Esperanza Luna, Katarina S. Flashar, Valentin Walbrunn, Walid Anders, Nicole Volkmer, Doreen Steffen, Katrin Morgenroth, Frans Munnik, Tsedenia A. Zewdie, Saswati Santra, Jutta Schwarzkopf, Ian D. Sharp, Mingyun Yuan   +14 more
wiley   +1 more source

A Multimodal Piezoelectric Vertical Sidewall Architecture for Scalable In‐Plane NEMS Resonators

Advanced Electronic Materials, EarlyView.
A vertical in‐plane piezoelectric resonator design shifts frequency tuning from film thickness to lithographic lateral definition, facilitating monolithic multiband integration. Initially validated via microscale length‐extensional resonators, this cavities‐first fabrication approach scales to the nanoscale for high‐frequency operation.
Artem Gabrelian, Kristina Bespalova, Glenn Ross, Mervi Paulasto‐Kröckel   +3 more
wiley   +1 more source

Cumulative‐Stress‐Resilient Microelectromechanical Switches for Extreme Environment Applications

Advanced Electronic Materials, EarlyView.
A microelectromechanical switch combines a thermomechanically stable suspended structure with radiation‐tolerant materials to preserve operation under cumulative shock (2900 g), vibration (2000 Hz), gamma irradiation (1 Mrad), extreme temperatures (4–450 K), and proton irradiation (100 MeV, 1012 p/cm2).
So‐Young Lee, Min‐Sub Kim, Tae‐Soo Kim, Young‐Woo Jo, Yu‐Hyun Shim, Se‐Yoon Jung, Sung‐Ho Kim, Do‐Hoon Lim, Yong‐Bok Lee, Jun‐Bo Yoon   +9 more
wiley   +1 more source

Operando X‐Ray Diffraction Analysis of Microscopic Structural Response in 33‐ and 31‐Mode Geometries Under an Applied Electric Field in (100)/(001)‐Oriented Epitaxial Tetragonal Pb(Zr, Ti)O3 Films Grown on (100) Si Substrates

Advanced Electronic Materials, EarlyView.
Operando synchrotron x‐ray diffraction reveals the microscopic structural response of multidomain epitaxial tetragonal Pb(Zr,Ti)O3 thin films during both 33‐ and 31‐mode actuation. Ferroelastic domain switching is directly correlated with out‐of‐plane and in‐plane lattice deformation, while time‐resolved measurements demonstrate distinct different ...
Miki Nakahata, Kazuki Okamoto, Keisuke Ishihama, Takao Shimizu, Tomoyuki Koganezawa, Rosantha Kumara, Tomotaka Nakatani, Osamu Ikeda, Osami Sakata, Tomoaki Yamada, Hiroshi Funakubo   +10 more
wiley   +1 more source

MEMS Technology for Optical Switching

Walailak Journal of Science and Technology, 2012
Over the last ten years, microelectromechanical systems (MEMS) devices have received attention in many application areas such microwave, wireless, and optical networks. Especially in optical networks, MEMS technology is employed to provide the advantages
Kornkamol THAKULSUKANANT
doaj   +1 more source

Micro-electro-mechanical systems (MEMS): Technology for the 21st century [PDF]

Hemijska Industrija, 2014
Micro-electro-mechanical systems (MEMS) are miniturized devices that can sense the environment, process and analyze information, and respond with a variety of mechanical and electrical actuators.
Đakov Tatjana A., Popović Ivanka G., Rajaković Ljubinka V.   +2 more
doaj   +1 more source

A Comprehensive Review on Additive Manufacturing of Smart Components: Technologies, Applications, and Future Scope

Advanced Intelligent Systems, EarlyView.
How can additive manufacturing enable components that sense, adapt, heal, and power themselves? This review synthesizes recent advances in smart functionalities, manufacturing technologies, and intelligent design strategies, revealing a pathway toward fully integrated, autonomous, and multifunctional systems across diverse engineering sectors. Additive
Aiswarya Rony, P. M. Ushasree, Michael Short, Jinoop Arackal Narayanan   +3 more
wiley   +1 more source

A Simple and Affordable Footwear‐Integrated Near‐Miss Slip Sensor for Detecting Latent Slip Risk During Gait

Advanced Intelligent Systems, EarlyView.
A simple, affordable near‐miss slip sensor mounted on the shoe sole detects floor slipperiness during walking on oily and normal floors. Its two‐stage structure houses two single‐axis force sensors, and their peak‐output ratio—the central pressure response normalized by the load‐reference signal—classifies the two floor types (p < 0.01).
Yusaku Tagawa, Taiyu Okatani, Remi Takano, Tomoyuki Yokota, Hiroshi Onodera   +4 more
wiley   +1 more source

Fabrication of 3D Carbon Microelectromechanical Systems (C-MEMS) [PDF]

Journal of Visualized Experiments, 2017
A wide range of carbon sources are available in nature, with a variety of micro-/nanostructure configurations. Here, a novel technique to fabricate long and hollow glassy carbon microfibers derived from human hairs is introduced. The long and hollow carbon structures were made by the pyrolysis of human hair at 900 °C in a N2 atmosphere.
Pramanick, Bidhan, Martinez-Chapa, Sergio O, Madou, Marc, Hwang, Hyundoo   +3 more
openaire   +4 more sources

Artificial structures for human‐machine interfaces with closed‐loop interaction

FlexMat, EarlyView.
Artificial structures bridge sensing and feedback in closed‐loop human‐machine interfaces by providing geometry‐enabled mechanical and functional programmability. This review maps the role of artificial structures in diverse sensing modalities and feedback strategies, and illustrates their integration into closed‐loop interaction systems, highlighting ...
Taiqi Hu, Taisong Pan, Siqi Chen, Yiting Zhang, Yuan Lin   +4 more
wiley   +1 more source