Manufacturing method for mixed metal nanoparticle and mixed metal nanoparticle manufactured by the same

The present invention relates to a manufacturing method for composite metal nanoparticles and composite metal nanoparticles manufactured thereby. The manufacturing method of composite metal nanoparticles according to the present invention enables the production of uniform composite metal nanoparticles maintaining inherent metal properties even at low process temperatures, and enables easy removal from a substrate without damage, thereby facilitating transfer to any type and shape of target substrates. In addition, the composite metal nanoparticles manufactured by the method can be easily controlled in the optical properties according to the thickness and type of metals through plasmonic phenomena, thereby being used for color filters, detectors, sensors, photocatalysts, biomarker kits, etc. The manufacturing method of composite metal nanoparticles comprises the steps of: (i) modifying the surface of a substrate to become hydrophobic; (ii) forming a first metal layer on the modified substrate; (iii) heat-treating or light-treating the substrate to form first metal nanoparticles on the surface of the substrate; (iv) irradiating the substrate with ultraviolet rays; (v) forming composite metal nanoparticles on the substrate; and (vi) separating the composite metal nanoparticles from the substrate using an adhesive film. 본 발명은 복합금속 나노입자의 제조방법 및 이를 통해 제조된 복합금속 나노입자에 관한 것으로, 본 발명에 따른 복합금속 나노입자의 제조방법은 낮은 공정 온도에서도 금속 고유의 특성이 유지된 균일한 복합금속 나노입자를 제조할 수 있고, 기판으로부터 손상 없이 분리 가능하여 타겟기판의 종류 및 형태에 상관없이 전사가 용이하다. 또한, 이를 통해 제조된 복합금속 나노입자는 금속의 두께 및 종류에 따라 플라즈모닉 현상으로 입자의 광학적 현상이 조절이 용이하여 컬러필터, 검출기, 센서, 광촉매 및 바이오마커 키트 등에 사용될 수 있다.