Method of forming nano-particle array by convective assembly, and convective assembly apparatus for the same

A convective assembly apparatus for a nano-particle array, comprising:

• a tank containing a colloidal solution comprising a plurality of nano-particles;
• a first substrate and a second substrate which are partially immersed in the tank and positioned to face each other and be apart from each other at a desired distance to allow movement between the first substrate and the second substrate;
• a lift-up unit for raising up the first substrate at a desired raising speed relative to the second substrate;
• and
• a heating unit for locally heating a front portion of the colloidal solution drawn into the space between the first substrate and the second substrate, when the first substrate is raised relative to the second substrate.

A convective assembly apparatus for a nano-particle array, comprising:

• a fixed substrate including an opening for supplying a colloidal solution comprising nano-particles;
• a sliding substrate positioned under the fixed cover facing and spaced apart at a desired distance from the fixed substrate in parallel to allow movement between the fixed substrate and the sliding substrate;
• at least one driving roller for moving the sliding substrate at a constant speed relative to the fixed substrate;
• and
• a heating unit for locally heating a front portion of the colloidal solution drawn when the sliding substrate is raised relative to the fixed substrate.