National Taiwan University

Chen-Chieh Yu

Hsuen-Li Chen

Yu-Ting Yen

Cheng-Yi Fang

Yang-Chun Lee

Yu-Lun Liu

Sin-Yi Chou

De-Hui Wan

In a Surface-Enhanced Raman Scattering (SERS) substrate and the manufacturing method thereof, the SERS substrate includes a low thermal conductivity base and a plurality of metal nanoparticles (NPs). The surface of the low thermal conductivity substrate has a first surface, and the first surface has a plurality of ripple micro/nano structures. The plurality of metal NPs are non-continuously densely arranged on the ripple micro/nano structures of the first surface. The metal NPs have a height difference along the ripple micro/nano structures, and form a 3D electric field enhanced region. The manufacturing methods includes sputtering a metal nano-thin film on a surface of a low thermal conductivity base, and the surface of the low thermal conductivity base has a plurality of ripple micro/nano structures; using laser to ablate the metal nano-thin film; and forming a plurality of metal NPs, which are non-continuously densely arranged.

Surface-enhanced raman scattering substrate and manufacturing method thereof

The present invention provides an optical device, and the optical device comprises a luminous element and a gradient-index nanoparticle layer and scattering particles composed by particles stack with different refractive indexes and particle sizes. The luminous element has a light emitting surface. The refractive indexes of the nanoparticle layers decrease bottom up. The nanoparticles based gradient-index nanoparticle layer comprises a plurality of dielectric layers with different refractive index, and the dielectric scattering particle layers are stacked upward from the light emitting surface to let the gradient-index nanoparticle layer and scattering particles cover the light emitting surface. The method for manufacturing the abovementioned optical device is also disclosed.

Optical device and method for manufacturing the same

Growing community of inventors

Taipei, Taiwan

Chen-Chieh Yu