Abstract: One aspect of the present disclosure is an organic/inorganic composite powder and a composition including the same in which a coating film on a surface of an inorganic powder is not easily fall off under various conditions such as pH, temperature, physical force, etc., so that has excellent moisture retention and less transferring and allows for natural makeup.

Abstract: One aspect of the present disclosure relates to a cosmetic composition including an inorganic powder; at least one stabilizer selected from the group consisting of a metal dispersing agent, an anionic surfactant and a pH adjusting agent; and a functional active component. According to the cosmetic composition according to one aspect of the present disclosure, while maintaining the dispersion stability and even distribution in the skin, it is possible to prevent the functional active components from adsorbing on the inorganic powder.

Abstract: The present invention relates to a cosmetic composition comprising: (i) boron nitride; and (ii) one or more kinds of inorganic powders selected from the group consisting of cerium oxide, titanium oxide, talc, aluminum oxide, iron oxide, zinc oxide and mica. UVA, UVB and near-IR may be simultaneously screened by applying the cosmetic composition.

Abstract: The present invention relates to a cosmetic composition comprising: (i) boron nitride; and (ii) one or more kinds of inorganic powders selected from the group consisting of cerium oxide, titanium oxide, talc, aluminum oxide, iron oxide, zinc oxide and mica. UVA, UVB and near-IR may be simultaneously screened by applying the cosmetic composition.

Abstract: The present invention relates to a cosmetic composition comprising: (i) boron nitride; and (ii) one or more kinds of inorganic powders selected from the group consisting of cerium oxide, titanium oxide, talc, aluminum oxide, iron oxide, zinc oxide and mica. UVA, UVB and near-IR may be simultaneously screened by applying the cosmetic composition.

Abstract: Disclosed are an optical cavity and a gas cell fabricated by using the same. The optical cavity is the most important element of the gas cell, which measures density of gas using light absorption characteristics of the gas. The gas cell includes two quadratic parabolic concave mirrors, which share a focus and an optical axis. Light incident toward the focus is reflected from the two quadratic parabolic concave mirrors so that the light may travel in parallel to the optical axis and the light incident in parallel to the optical axis may pass through the focus while being reflected from the two quadratic parabolic concave mirrors. The optical cavity includes two quadratic parabolic concave mirrors, which are aligned in opposition to each other with different focus lengths such that they share the focus using the reflection characteristics thereof.

Abstract: A unique optical cavity for NDIR gas sensor module and test results for the CO2 concentration from 100 ppm to 2,000 ppm are disclosed. The proposed sensor module shows the maximum peak voltage at 500 ms pulse duration, however, it has a maximum fractional voltage changes at 200 ms pulse duration with 18,000 times amplification gain. From 100 ppm to 2,000 ppm, the voltage difference of sensor module (V) is 200 mV at 200 ms pulse duration and 3 sec. turn-off time.

Abstract: A unique optical cavity for NDIR gas sensor module and test results for the CO2 concentration from 100 ppm to 2,000 ppm are disclosed. The proposed sensor module shows the maximum peak voltage at 500 ms pulse duration, however, it has a maximum fractional voltage changes at 200 ms pulse duration with 18,000 times amplification gain. From 100 ppm to 2,000 ppm, the voltage difference of sensor module (V) is 200 mV at 200 ms pulse duration and 3 sec. turn-off time.

Abstract: A micromachined piezoelectric microspeaker and its fabricating method are disclosed. The micromachined piezoelectric microspeaker comprises a diaphragm and a plurality of contact pads. The diaphragm comprises an active area which is flat, and a non-active area which is wrinkled and surrounds the active area. The plurality of contact pads for electrodes are located outside of the diaphragm and over a wafer.

Abstract: A micromachined piezoelectric microspeaker and its fabricating method are disclosed. The micromachined piezoelectric microspeaker comprises a diaphragm and a plurality of contact pads. The diaphragm comprises an active area which is flat, and a non-active area which is wrinkled and surrounds the active area. The plurality of contact pads for electrodes are located outside of the diaphragm and over a wafer.

Abstract: A micromachined piezoelectric microspeaker and its fabricating method are disclosed. The micromachined piezoelectric microspeaker comprises a diaphragm and a plurality of contact pads. The diaphragm comprises an active area which is flat, and a non-active area which is wrinkled and surrounds the active area. The plurality of contact pads for electrodes are located outside of the diaphragm and over a wafer.

Abstract: A micromachined piezoelectric microspeaker and its fabricating method are disclosed. The micromachined piezoelectric microspeaker comprises a diaphragm and a plurality of contact pads. The diaphragm comprises an active area which is flat, and a non-active area which is wrinkled and surrounds the active area. The plurality of contact pads for electrodes are located outside of the diaphragm and over a wafer.