Method of inhibiting proliferation of tumor cell using triboelectric energy generator using ultrasonic wave

A triboelectric energy generator using ultrasonic wave, the generator comprising:

• a substrate;
• a first triboelectric member disposed on the substrate and in a first partial region of a top face of the substrate;
• a second triboelectric member disposed on the substrate in a second partial region of the top of the substrate, wherein the second partial region is different from the first partial region;
• and
• a third triboelectric member disposed above and spaced from the first triboelectric member and the second triboelectric member,
• wherein the first triboelectric member, the second triboelectric member, and the third triboelectric member are made of different materials,
• wherein the material of the third triboelectric member has a position between positions of the materials of the first triboelectric member and the second triboelectric member on a triboelectric series,
• wherein, when an ultrasonic wave is applied to a top face of the third triboelectric member, the third triboelectric member is constructed to alternately contact and non-contact both of the first triboelectric member and the second triboelectric member, thereby to generate triboelectricity.