IS Instruments (United Kingdom)

Taming the boundary effect: Femtosecond laser slicing of 4H-SiC enabled by side scribing for improved processability

The 4H polytype of silicon carbide (4H-SiC) has excellent properties such as high electron mobility and high saturation electron velocity; it has therefore become an important material for high-power and high-frequency devices. In the slicing step of wafer fabrication, however, c...

Enhancement of the optical and spin properties of silicon vacancies in proton-implanted 4H-SiC via femtosecond laser annealing

The silicon vacancy (VSi) in 4H-SiC represents a promising candidate for solid-state qubits. However, conventional high-temperature annealing typically suffers from undesired impurity diffusion and limited spatial localization during fabrication. Here, we present a femtosecond la...

Rapid Identification of Multiple Types of Adulterated Ophiocordyceps sinensis by SEM ‐ EDS Based on Micromorphology and Elemental Analysis

As a rare and precious traditional Chinese medicine (TCM), Ophiocordyceps sinensis (O. sinensis) is plagued by various adulterants in the market due to factors such as resource scarcity, which seriously affects medication safety and clinical efficacy. Existing identification meth...