Results 51 to 60 of about 2,512,751 (208)

Super-High-Frequency Bulk Acoustic Resonators Based on Aluminum Scandium Nitride for Wideband Applications

Nanomaterials, 2023
Despite the dominance of bulk acoustic wave (BAW) filters in the high-frequency market due to their superior performance and compatible integration process, the advent of the 5G era brings up new challenges to meet the ever-growing demands on high ...
Wentong Dou, Congquan Zhou, Ruidong Qin, Yumeng Yang, Huihui Guo, Zhiqiang Mu, Wenjie Yu   +6 more
doaj   +1 more source

High performance thin film bulk acoustic resonator covered with carbon nanotubes [PDF]

, 2006
This letter presents experimental results concerning a thin film bulk acoustic wave resonator realized on a thin GaN membrane and covered with a thin film of double walled carbon nanotube mixture.
R. Plana, Muller, Alexandru, Dubuc, David, Dragoman, Mircea, D. Neculoiu, D. Vasilache, Bary, Laurent, A. Muller, G. Konstantinidis, Flahaut, Emmanuel, Neculoiu, Dan, Vasilache, Dan-Adrian, Plana, Robert, D. Dubuc, Grenier, Katia, E. Flahaut, Konstantinidis, George, M. Dragoman, K. Grenier, L. Bary   +19 more
core   +1 more source

Bright‐Dark Exciton Splitting in Lead Iodide Perovskite Crystals Accessed via Quantum Beats in Photon Echoes

Advanced Optical Materials, EarlyView.
Understanding exciton fine structure is crucial for optoelectronic and quantum photonic applications of lead halide perovskites. It is demonstrated that polarization‐sensitive photon‐echo spectroscopy in a magnetic field resolves exciton fine‐structure splittings hidden by inhomogeneous broadening, enabling direct determination of the bright‐dark ...
M. Alex Hollberg, Mikhail O. Nestoklon, Artur V. Trifonov, Stefan Grisard, Oleh Hordiichuk, Dmitry N. Dirin, Maksym V. Kovalenko, Dmitri R. Yakovlev, Manfred Bayer, Ilya A. Akimov   +9 more
wiley   +1 more source

Design and Fabrication of a Film Bulk Acoustic Wave Filter for 3.0 GHz–3.2 GHz S-Band

Sensors
Film bulk acoustic-wave resonators (FBARs) are widely utilized in the field of radio frequency (RF) filters due to their excellent performance, such as high operation frequency and high quality.
Chao Gao, Yupeng Zheng, Haiyang Li, Yuqi Ren, Xiyu Gu, Xiaoming Huang, Yaxin Wang, Yuanhang Qu, Yan Liu, Yao Cai, Chengliang Sun   +10 more
doaj   +1 more source

Coherent Absorption Reveals Colors Hidden in a Grey Fabry–Pérot Cavity

Advanced Optical Materials, EarlyView.
A dielectric thin film shows colors depending on its thickness; this effect can be used to encode information normally accessible through single‐beam spectroscopy. We developed a method to conceal this kind of information, based on coating the dielectric with a matched conductor, that suppresses the color‐bearing thin‐film resonances.
Giuseppe E. Lio, Giulio Carotta, Lorenzo Lavista, Andrea Camposeo, Giacomo Venturi, Agnese Guernieri, Alessandro Pitanti, Simon A. R. Horsley, Giuseppe C. La Rocca, Alessandro Tredicucci, Simone Zanotto   +10 more
wiley   +1 more source

Graphene-coated rayleigh SAW resonators for NO2 detection [PDF]

, 2014
This paper describes the development of a novel low-cost Rayleigh Surface Acoustic Wave Resonator (SAWR) device coated with a graphene layer that is capable of detecting PPM levels of NO2 in air.
Udrea, F., Torrisi, F., Cole, M., Ferrari, A.C., Thomas, S., De Luca, A., Gardner, J. W., Gardner, J.W., DE LUCA, ANDREA, Thomas, Stephen M., Cole, Marina, Ferrari, A. C., Udrea, Florin, Gardner, Julian W   +13 more
core   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Super‐high‐frequency‐band injection‐locked two‐divider oscillator using thin‐film bulk acoustic resonator

Electronics Letters, 2021
An injection‐locked divider oscillator that converts a 6‐GHz‐band signal into a 3‐GHz‐band signal was developed. The injection‐locked divider oscillator was specifically designed to lock on the clock transition frequency of 87Rb of 6.824 GHz to provide a
Motoaki Hara, Yuichiro Yano, Yuki Takahashi, Toshio Nishizawa, Shinsuke Hara, Akifumi Kasamatsu, Masanori Ueda, Hiroyuki Ito, Tetsuya Ido   +8 more
doaj   +1 more source

Flexible Sensors for Robotics Tactile Perception: A Review

Advanced Robotics Research, EarlyView.
Flexible tactile sensing for robotics is reviewed through four interconnected dimensions. Physical mechanisms include piezoresistive, capacitive, piezoelectric, triboelectric, iontronic, and optical sensing. Structural design includes bioinspired, defect‐based, and MEMS‐based tactile systems.
Yu Song, Ying Chen, Yihao Chen, Xue Feng
wiley   +1 more source

Film Bulk Acoustic Resonator Based on Zinc Oxide Thin Film [PDF]

, 2013
A piezoelectric thin film sandwiched between two metal electrodes is basic structure for high frequency bulk acoustic wave devices. For that propose, the RF magnetron sputtering deposition for piezoelectric ZnO film formation and its such application for
Sorli, Brice, Giani, Alain, Ndong, Roger Ondo, Foucaran, Alain   +3 more
core   +1 more source