Results 61 to 70 of about 209,492 (196)

Dynamics of Primordial Hydrogen Recombination with Allowance for a Recoil for Scattering in the Ly-alpha Line

, 2008
It is shown that taking into account a recoil for radiation scattering in the Ly-alpha line can lead to a noticable acceleration of primordial hydrogen recombination.
E. E. Kholupenko, J. A. Rubiño-Martin, J. Chluba, J. Chluba, M. M. Basko, N. N. Chugai, P. J. Peebles, S. I. Grachev, S. I. Grachev, S. I. Grachev, S. I. Grachev, U. Seljak, V. K. Dubrovich, V. K. Dubrovich, W. Y. Wong, Ya. B. Zel’dovich   +15 more
core   +1 more source

Spin transfer nano-oscillators

, 2013
The use of spin transfer nano-oscillators (STNOs) to generate microwave signal in nanoscale devices have aroused tremendous and continuous research interest in recent years.
Finocchio, Giovanni, Jiang, Hongwen, Zeng, Zhongming   +2 more
core   +1 more source

Microwave assisted heterogeneous catalysis: effects of varying oxygen concentrations on the oxidative coupling of methane [PDF]

, 2009
The oxidative coupling of methane was investigated over alumina supported La2O3/CeO2 catalysts under microwave dielectric heating conditions at different oxygen concentrations.
A Machocki, Binghua Ni, C Chen, C Marun, C Marun, C Wonihl, Colleen Lee, D Koni, FQ Chen, G Bond, G Roussy, JJ Carberry, JKS Wan, K Takanabe, P Nilsson, PS Anjana, Run-Cang Sun, SL Suib, SL Suib, T Moeller, T Yamamoto, WM Nelson, XL Zhang, XL Zhang, XL Zhang, XL Zhang, Xunli Zhang, YT Chua, Z Fakhroueian   +28 more
core   +1 more source

Wireless transfer of power by a 35-GHz metamaterial split-ring resonator rectenna [PDF]

, 2018
Wireless transfer of power via high frequency microwave radiation using a miniature split ring resonator rectenna is reported. RF power is converted into DC power by integrating a rectification circuit with the split ring resonator.
Averitt, Richard, Christopher, Jason, Erramilli, Shyamsunder, Hong, Mi K., House, Larry, Keiser, George, Maedler, Carsten, Mertiri, Alket, Mohanty, Pritiraj, Seren, Huseyin R., Yi, Adrian, Zhang, Xin   +11 more
core  

Transmission Line Resistance Compression Networks and Applications to Wireless Power Transfer [PDF]

, 2014
Microwave-to-dc rectification is valuable in many applications, including RF energy recovery, dc-dc conversion, and wireless power transfer. In such applications, it is desired for the microwave rectifier system to provide a constant RF input impedance ...
Barton, Taylor W., Gordonson, Joshua M., Perreault, David J.   +2 more
core   +1 more source

DC-25 GHz and Low-Loss MEMS Thermoelectric Power Sensors with Floating Thermal Slug and Reliable Back Cavity Based on GaAs MMIC Technology

Micromachines, 2018
Wideband and low-loss microwave power measurements are becoming increasingly important for microwave communication and radar systems. To achieve such a power measurement, this paper presents the design and measurement of wideband DC-25 GHz and low-loss ...
Zhiqiang Zhang, Yao Ma
doaj   +1 more source

Microwave beam power [PDF]

Information on microwave beam power is given in viewgraph form. Information is given on orbit transfer proulsion applications, costs of delivering 100 kWe of usable power, and costs of delivering a 1 kg payload into ...
Faymon, Karl A.
core   +1 more source

Magnetic vortex oscillator driven by dc spin-polarized current [PDF]

, 2007
Transfer of angular momentum from a spin-polarized current to a ferromagnet provides an efficient means to control the dynamics of nanomagnets. A peculiar consequence of this spin-torque, the ability to induce persistent oscillations of a nanomagnet by ...
A Wachowiak, B Van Waeyenberge, B Özyilmaz, D. C. Ralph, EB Myers, G. D. Fuchs, I. N. Krivorotov, IN Krivorotov, J Xiao, J-V Kim, J. C. Sankey, JA Katine, JC Sankey, JC Slonczewski, JE Wegrove, JP Park, JZ Sun, K Yamada, KYu Guslienko, L Berger, M Bode, M Lax, M Rahm, M Tsoi, NC Emley, O. Ozatay, P. M. Braganca, R. A. Buhrman, RJ Soulen Jr, RL Compton, RP Cowburn, S Kasai, S Mangin, S-B Choe, SI Kiselev, SI Kiselev, T Shinjo, T Uhlig, V Novosad, V. S. Pribiag, WH Rippard, WH Rippard, Y Acremann   +42 more
core   +1 more source

Numerical simulation of hotspot in polyol ester production using microwave-assisted reaction

Results in Engineering
The complex distribution of electric field and heat transfer in microwave heating causes unfavorable hotspots in a microwave-assisted transesterification process.
Nur Atiqah Mohamad Aziz, Hassan Mohamed, Mei Yin Ong, Robiah Yunus, Ming Chiat Law, Hamidah Abd Hamid, Dina Kania, Teuku Meurah Indra Mahlia   +7 more
doaj   +1 more source

Microwave Oscillations of a Nanomagnet Driven by a Spin-Polarized Current

, 2003
We describe direct electrical measurements of microwave-frequency dynamics in individual nanomagnets that are driven by spin transfer from a DC spin-polarized current. We map out the dynamical stability diagram as a function of current and magnetic field,
AV Nazarov, B Özyilmaz, C Kittel, CH Lee, D. C. Ralph, DM Pozar, EB Myers, EB Myers, FJ Albert, GEW Bauer, H Suhl, I. N. Krivorotov, J Grollier, J Grollier, J-E Wegrowe, J. C. Sankey, JA Katine, JC Slonczewski, JZ Sun, JZ Sun, JZ Sun, L Berger, M Tsoi, M Tsoi, MD Stiles, MN Baibich, MT Johnson, N. C. Emley, R. A. Buhrman, R. J. Schoelkopf, S. I. Kiselev, WH Rippard, YB Bazaliy, YB Bazaliy, Z Li   +34 more
core   +1 more source