Search Results - kun-chieh+chien

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Fabrication process for creating functional nanostructures on sapphire and other hard optical ceramics
Background Achieving precise high-aspect-ratio nanostructures on hard optical materials presents significant technical hurdles due to the intrinsic properties of these substrates, such as sapphire’s high hardness, chemical stability, and thermal tolerance. Traditional fabrication methods often struggle with generating uniformly patterned, tall,...
Published: 4/4/2025   |   Inventor(s): Chih-Hao Chang, Kun-Chieh Chien
Keywords(s):  
Category(s): Physical sciences, Physical sciences > Aerospace, Computer > Semiconductors > Semiconductor materials
Technology for fabricating dense sapphire nanostructures using near‑field focusing of ultrafast lasers
Background Nanostructuring ultrahard materials like sapphire is challenging due to their inherent hardness and chemical stability, which complicate the precise modification and removal of material. Traditional approaches such as multi­layer masking, low-power dry etching, and direct ultrafast laser processing have struggled to achieve the fine,...
Published: 3/26/2025   |   Inventor(s): Chih-Hao Chang, Kun-Chieh Chien, Joshua Cheung
Keywords(s):  
Category(s): Computer > Semiconductors, Physical sciences > Aerospace, Life sciences > Diagnostic