Abstract: A color-changing sheet according to an embodiment of the present invention may include a base layer having a brightness (L value) of less than 40 and a color layer positioned on at least one surface of the base layer, containing a color dye or a pigment, and having a transmittance of to 90%, wherein a thickness ratio of the base layer to the color layer is 0.1 to 10, and may realize color change without adding additional particles.

Abstract: An external light blocking film includes a base of transparent resin and an external light blocking pattern having a plurality of external light blocking parts. The external light blocking part is formed by filling a groove with a light absorption material. One end of the external light blocking part is exposed on a surface of the base, and the other end of the external light blocking part is buried in the base. The one end has a shape of a stripe and the other end has a shape of a zigzag curve when viewed from the front. Furthermore, a method of fabricating an external light blocking film and a filter for a display device having an external light blocking film are provided. The external light blocking film has an excellent ability to absorb external light. A complicated pattern of the external light blocking film can be easily formed without additional machining processes, whereby the fabrication time and cost can be saved.

Abstract: The present invention relates generally to the field of spectroscopy, and more particularly to tip-enhanced Raman spectroscopy that provides an enhanced contrast-ratio of a near-field Raman signal to a background signal. The near-field Raman signal is captured from a small volume of material near a metal-coated tip thereby achieving submicron lateral resolution.

Abstract: An external light blocking film includes a base of transparent resin and an external light blocking pattern having a plurality of external light blocking parts. The external light blocking part is formed by filling a groove with a light absorption material. One end of the external light blocking part is exposed on a surface of the base, and the other end of the external light blocking part is buried in the base. The one end has a shape of a stripe and the other end has a shape of a zigzag curve when viewed from the front. Furthermore, a method of fabricating an external light blocking film and a filter for a display device having an external light blocking film are provided. The external light blocking film has an excellent ability to absorb external light. A complicated pattern of the external light blocking film can be easily formed without additional machining processes, whereby the fabrication time and cost can be saved.

Abstract: The present invention relates generally to the field of spectroscopy, and more particularly to tip-enhanced Raman spectroscopy that provides an enhanced contrast-ratio of a near-field Raman signal to a background signal. The near-field Raman signal is captured from a small volume of material near a metal-coated tip thereby achieving submicron lateral resolution.