Stretchable multimodal sensor and method of fabricating of the same
A stretchable multimode sensor and a method of fabricating the same are provided. The stretchable multimode sensor may include a substrate which is formed of a flexible material and includes a pressure sensor area, an optical sensor area, a temperature sensor area and a switching element area, a pressure sensor which is disposed on the pressure sensor area and includes an amorphous metal, an optical sensor which is disposed on the optical sensor area and includes an amorphous metal, and a temperature sensor which is disposed on the temperature sensor area and includes an amorphous metal, and a switching element which is disposed on the switching element area and includes an amorphous metal.
1. A method of fabricating an amorphous thin film, the method comprising:
disposing a source including two or more kinds of metal chemical elements, and a substrate in a chamber; and
performing a sputtering process to fabricate an amorphous thin film on the substrate from the source,
wherein flexibility of the amorphous thin film is controlled by controlling a process pressure in the chamber,
wherein the substrate is a polymer substrate, and
wherein the polymer substrate is cooled or quenched after the fabrication of the amorphous thin film such that a wrinkle structure is generated at the amorphous thin film.
2. The method of claim 1 , wherein the process pressure in the chamber is a minimum pressure which generates plasma in the chamber.
3. The method of claim 1 , wherein a length of a void extending from a surface of the amorphous thin film in a depth direction is controlled depending on the process pressure in the chamber.
4. The method of claim 3 , wherein the length of the void increases as the process pressure in the chamber increases, and
wherein the length of the void decreases as the process pressure in the chamber decreases.
5. The method of claim 1 , wherein the flexibility of the amorphous thin film decreases as the process pressure in the chamber increases, and
wherein the flexibility of the amorphous thin film increases as the process pressure in the chamber decreases.
6. The method of claim 1 , wherein a region in which a polymer of the polymer substrate is mixed with a metal of the amorphous thin film is provided at an interface between the polymer substrate and the amorphous thin film.
7. The method of claim 1 , wherein the amorphous thin film includes an early transition metal and a late transition metal.