Results 21 to 30 of about 172,007 (293)

Generation of continuous-wave THz radiation by use of quantum interference [PDF]

, 1999
We propose a scheme for generation of continuous-wave THz radiation. The scheme requires a medium where three discrete states in a $\Lambda $ configuration can be selected, with the THz-frequency transition between the two lower metastable states.
Armstrong, Brandt, Buckle, D. V. Kosachiov, E. A. Korsunsky, Godone, Harris, Harris, Jain, Korsunsky, Kosachiov, Kosachiov, Merriam, Strumia, Xu   +14 more
core   +2 more sources

Ni Flower/MXene-Melamine Foam Derived 3D Magnetic/Conductive Networks for Ultra-Efficient Microwave Absorption and Infrared Stealth

Nano-Micro Letters, 2022
The development of multifunctional and efficient electromagnetic wave absorbing materials is a challenging research hotspot. Here, the magnetized Ni flower/MXene hybrids are successfully assembled on the surface of melamine foam (MF) through ...
Haoran Cheng, Yamin Pan, Xin Wang, Chuntai Liu, Changyu Shen, Dirk W. Schubert, Zhanhu Guo, Xianhu Liu   +7 more
doaj   +1 more source

POLITICAL ELECTIONS FOR MARKETERS [PDF]

, 2010
SrFe12O19 coatings, intended as electromagnetic wave absorbers, were produced by atmospheric plasma spraying (APS) using two different kindsof feedstock powders: spray-dried agglomerates of micrometric SrFe12O19 particles (type-A) or spray-dried ...
Bobzin, K., Bolelli, G., Bruehl, M., Gyergyek, S., Hujanen, Arto, Lintunen, Pertti, Lisjak, D., Lusvarghi, L.   +7 more
core   +1 more source

Switchable metamaterial reflector/absorber for different polarized electromagnetic waves

, 2010
We demonstrate a controllable electromagnetic wave reflector/absorber for different polarizations with metamaterial involving electromagnetic resonant structures coupled with diodes. Through biasing at different voltages to turn ON and OFF the diodes, we
Feng, Yijun, Huang, Ci, Jiang, Tian, Zhao, Juming, Zhu, Bo   +4 more
core   +1 more source

The response of laser interferometers to a gravitational wave [PDF]

, 2000
Laser interferometer detectors are now widely used in an attempt to detect gravitational waves (gw). The interaction of the gw with the light circulating in the interferometer is usually explained in terms of the motion of the "free" mirrors that form ...
Das, Ashok, Melissinos, Adrian
core   +2 more sources

Research on three-dimensional forward modeling of underground radio wave perspective and electromagnetic wave propagation characteristics

Meikuang Anquan
The theory of electromagnetic wave propagation in strata is the basis for underground radio wave detection. There are differences in the propagation of electromagnetic waves in the strata when the detection frequency and coal seam occurrence change.
Chengzhong GAO, Yanqing WU
doaj   +1 more source

Synthesis of CuCo2S4@Expanded Graphite with crystal/amorphous heterointerface and defects for electromagnetic wave absorption

Nature Communications, 2023
The remarkable advantages of heterointerface and defect engineering and their unique electromagnetic characteristics inject infinite vitality into the design of advanced carbon-matrix electromagnetic wave absorbers.
Zhimeng Tang, Lei Xu, Cheng Xie, Lirong Guo, Libo Zhang, Shenghui Guo, Jinhui Peng   +6 more
doaj   +1 more source

Design and Preparation of Flexible Graphene/Nonwoven Composites with Simultaneous Broadband Absorption and Stable Properties

Nanomaterials, 2023
As the world moves into the 21st century, the complex electromagnetic wave environment is receiving widespread attention due to its impact on human health, suggesting the critical importance of wearable absorbing materials.
Song Bi, Yongzhi Song, Genliang Hou, Hao Li, Nengjun Yang, Zhaohui Liu   +5 more
doaj   +1 more source

PENGARUH SUBSTITUSI ION Ti-Zn TERHADAP SIFAT KEMAGNETAN dan SIFAT PENYERAPAN GELOMBANG ELEKTROMAGNETIK MATERIAL SISTEM BaFe12-xTix/2Znx/2O19

Spektra: Jurnal Fisika dan Aplikasinya, 2017
Substitution of Ti+4 and Zn+2 ions on magnetic material BaFe12-xTix/2Znx/2O19 (x = 0 and 2) using the wet milling method has been performed. This research was conducted to get information the influence of Ti-Zn substitution on magnetic properties and its
Nenni Nenni, Mutia Delina, Wisnu Ari Adi, Yana Taryana   +3 more
doaj   +1 more source

Hollow Gradient-Structured Iron-Anchored Carbon Nanospheres for Enhanced Electromagnetic Wave Absorption

Nano-Micro Letters, 2022
Highlights Microwave absorber with nanoscale gradient structure was proposed for enhancing the electromagnetic absorption performance. Outstanding reflection loss value (−62.7 dB), broadband wave absorption (6.4 dB with only 2.1 mm thickness) in ...
Cao Wu, Jing Wang, Xiaohang Zhang, Lixing Kang, Xun Cao, Yongyi Zhang, Yutao Niu, Yingying Yu, Huili Fu, Zongjie Shen, Kunjie Wu, Zhenzhong Yong, Jingyun Zou, Bin Wang, Zhou Chen, Zhengpeng Yang, Qingwen Li   +16 more
doaj   +1 more source