Results 151 to 160 of about 192,196 (336)

Unveiling the Influence of Annealing Temperature on Properties of CZTSSe Nanocrystals

open access: yesAdvanced Physics Research, EarlyView.
This study investigates the synthesis and annealing temperature effects on CZTSSe nanopowders for photoelectrochemical water splitting. Using solution‐based methods, the research explores how temperatures from 100 to 350 °C influence morphology, structure, and optical properties. Findings reveal temperature‐dependent grain growth and structural changes,
Akin Olaleru   +5 more
wiley   +1 more source

A Sophisticated Terahertz Photonic Crystal Fiber Sensor Design for Highly Accurate Detection of Kerosene Mixtures

open access: yesAdvanced Physics Research, EarlyView.
A novel Photonic Crystal Fiber sensor with an octagonal cladding and hollow core is developed to detect kerosene adulteration. At 2.2 THz, the sensor achieves 96.80% relative sensitivity, an effective mode loss of 0.00667 cm⁻¹, and minimal confinement loss (6.78 × 10⁻8 dB m−1).
Mohammad Abdullah‐Al‐Shafi   +1 more
wiley   +1 more source

GaAs Growth on Ge‐Buffered Discontinuous (111)‐Faceted V‐Groove Silicon Substrates

open access: yesAdvanced Physics Research, EarlyView.
This work demonstrates antiphase boundary (APB)‐free GaAs growth on Ge buffers formed on discontinuous (111) V‐groove Si substrates. By tailoring the Ge buffer morphology to form well‐defined facets, APB formation is suppressed. This approach offers alternative solutions to achieving APB‐free III–V integration on CMOS‐compatible on‐axis silicon without
Makhayeni Mtunzi   +14 more
wiley   +1 more source

Metasurface Doppler Cloak for Broadband Radar Stealth

open access: yesAdvanced Physics Research, EarlyView.
Suppressing the motion‐induced Doppler shift passes the target as part of the static clutter which is ignored by radars. Using a simple time‐modulation, frequency conversion is obtained from a metasurface‐based solution over a wide range. Referred to as a Doppler cloak, this work expands and validates such a varactor‐loaded prototype for broadband ...
Tanguy Lopez   +3 more
wiley   +1 more source

Pricing Issues in Telecommunications

open access: yesMaine Policy Review, 1994
Robert W. Crandall
doaj  

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