Seoul National University

Jun Ho Yang

Jae Hun Jung

Baek-ki Kim

Jai Ick Yoh

The present invention relates to a cigarette butt wrapping paper which comprises: a body having a planar shape approximately similar to the shape of a cigarette pack; a flame-retardant coated surface which is formed on the inside of the body, has a transverse length approximately similar to the circumferential length of a cigarette butt, and is coated with a material having a heat resisting function; an adhesive applied surface onto which an adhesive has been applied, wherein the adhesive applied surface is an area surrounding the outer circumferential surface of the flame-retardant coated surface; and opening forming parts which are formed in such a manner that the opposite side ends of the lower end of the body are inwardly recessed and form an entrance, through which the cigarette butt can be input, when the opposite side ends are matched and boned to each other.

Cigarette butt wrapping paper

A device and a method of detecting a concentration of a sample are provided. The device includes a power supply unit configured to supply power to generate plasma, a plasma generation unit connected to the power supply unit and including a pair of electrodes facing each other, a plurality of signal detection units arranged on the pair of electrodes and configured to sense light emitted from the sample because of the plasma, and a controller configured to control a driving start point of the signal detection unit so that the signal detection unit is driven after a preset period of time after oscillation is terminated between the pair of electrodes.

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Seoul, South Korea

Jun Ho Yang