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Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices [PDF]

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel +3 more
openalex +2 more sources

"Saturn" remains in orbit

Технологія та конструювання в електронній апаратурі, 2013
The article is dedicated to scientific and production enterprise "Saturn" — since its foundation up to the present day. The authors describe the determining stages of its development and its team’s scientific and technological achievements over the 45 ...
V. M. Chmil, E. N. Glushechenko
doaj

Modified Reference SPS with Solid State Transmitting Antenna [PDF]

The development of solid state microwave power amplifiers for a solar power satellite transmitting antenna is discussed. State-of-the-art power-added efficiency, gain, and single device power of various microwave solid state devices are compared.
Sperber, B. R., Woodcock, G. R.
core +1 more source

Microstructure and mechanical properties of interface between diamond and oxygen-free copper brazed joints

Hanjie xuebao
The vacuum brazing of polycrystalline diamond and OFC using AgCuTi brazing material was conducted. The effects of brazing temperature (830、 870、 910、950 °C) and holding time (1, 10, 30、60 min) on the interface structure and mechanical properties of the ...
Yulong LI +6 more
doaj +1 more source

Evaluation of the effect of three dimensional antenna array design on early detection of cerebral hemorrhage with microwave imaging devices [PDF]