1. A shutter apparatus of a cash transaction machine, comprising:
a drive unit;
a cam rotating body engaged with the drive unit and including a guide rail eccentric to the rotation center thereof; and
a shutter including a guide projection moving along the guide rail, which shuttles a straight path in response to the rotation of the cam rotating body;
wherein the rotation center of the cam rotating body and the guide projection are located on one straight line parallel to a moving direction of the shutter and the guide projection is vertically supported by the guide rail in case that the shutter is closed.
2. The apparatus of claim 1, wherein gear teeth are formed on the outer surface of the cam rotating body, and the drive unit includes a drive gear engaged with the gear teeth formed on the outer surface of the cam rotating body.
3. The apparatus of claim 1, wherein a settling groove is formed on the guide rail, toward the rotation center of the cam rotating body, in response to the case in which the shutter is closed.
4. The apparatus of claim 1, further comprising a shutter guide for guiding the shutter to straightly move.
5. A shutter apparatus of a cash transaction machine, comprising:
a drive unit;
a first cam rotating body engaged with the drive unit and including a first guide rail eccentric to the rotation center of the first cam rotating body;
a second cam rotating body, which is opposite to the first cam rotating body, engaged with the drive unit and including a second guide rail eccentric to the rotation center of the second cam rotating body; and
a shutter including a first guide projection moving along the first guide rail and a second guide projection moving along the second guide rail, which vertically moves in response to the rotation of the cam rotating body;
wherein the rotation center of the first cam rotating body and the first guide projection are located on one straight line parallel to a moving direction of the shutter, the first guide projection is vertically supported by the first guide rail in case that the shutter is closed, the rotation center of the second cam rotating body and the second guide projection are located on another straight line parallel to the moving direction of the shutter, and the second guide projection is vertically supported by the second guide rail in case that the shutter is closed.
6. The apparatus of claim 5, wherein gear teeth are formed on the outer surface of the first and second cam rotating bodies respectively and the first and second cam rotating bodies are engaged with both sides of a gear of the drive unit and symmetrically operate.
7. The apparatus of claim 5, wherein the first and second guide rails are approximately formed in a circle or an oval shape and symmetrically rotate, the first and second guide projections are located above or below the first and second guide rails and vertically supported by the first and second guide rails, in case that the shutter is closed.
8. The apparatus of claim 7, a first setting groove and a second settling groove are formed on the first and second guide rails respectively, the first and second settling grooves stably support the first and second guide projections respectively, in response to the case in which shutter is closed.
9. The apparatus of claim 7, wherein the first and second cam rotating bodies are continuously rotated in one direction by the drive unit.
10. The apparatus of claim 7, wherein the first and second cam rotating bodies are rotated in the range of certain degrees of an angle, switching the rotating directions thereof, respectively.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An apparatus, comprising:
a base layer having a distribution of separated micro-nucleation sites thereon; and
a distribution of nanostructures located on the base layer, each of the micro-nucleation sites being adjacent to some of the nanostructures; and wherein each of the micro-nucleation sites has a hydrophilic surface and the distribution of nanostructures form a superhydrophobic surface.
2. The apparatus of claim 1, wherein the micro-nucleation sites and the nanostructures are located on a planar surface of the base layer.
3. The apparatus of claim 1, wherein tops of the nanostructures are substantially coplanar with the hydrophilic surfaces of the micro-nucleation sites.
4. The apparatus of claim 1, wherein some of the nanostructures surround each of the micro-nucleation sites.
5. The apparatus of claim 1, wherein the hydrophilic surfaces of each of the micro-nucleation sites are substantially coplanar with bottoms of the nanostructures that contact the base layer.
6. The apparatus of claim 1, wherein an area occupied by the hydrophilic surfaces of each of the micro-nucleation sites is in a range of 1 to 100 microns2.
7. The apparatus of claim 1, wherein the hydrophilic surface of each of the micro-nucleation sites has a smooth surface.
8. The apparatus of claim 1, wherein a separation distance between adjacent ones of the micro-nucleation sites is equal to or less than about 10 microns.
9. The apparatus of claim 1, wherein the nanostructures are located on a region of the base layer having a lower thermal conductivity than a region of the base layer having the micro-nucleation sites thereon.
10. The apparatus of claim 1, wherein tops of the nanostructures include a reentrant angled ledge.
11. The apparatus of claim 1, wherein an area of the base layer having the nanostructures located thereon has a surface roughness where the following condition applies when a liquid droplet rests on the surface: \u22121r*cos \u03b8a<1, wherein r is the surface roughness of the surfaces having the distribution of nanostructures located thereon and \u03b8a is an intrinsic advancing contact angle of the liquid droplet.
12. The apparatus of claim 1, wherein a distance between adjacent ones of the nanostructures is greater than a critical condensation radius for a nucleating liquid droplet on the surface.
13. A system, comprising:
heat generating equipment; and
a heat transfer apparatus configured to remove heat generated by the heat generating equipment, wherein the apparatus includes:
a base layer having a distribution of separated micro-nucleation sites thereon; and
a distribution of nanostructures located on the base layer, each of the micro-nucleation sites being adjacent to some of the nanostructures; and wherein each of the micro-nucleation sites has a hydrophilic surface and the distribution of nanostructures form a superhydrophobic surface.
14. The system of claim 13, wherein the micro-nucleation sites are located on the surface of a condenser of the apparatus.
15. The system of claim 13, wherein the condenser is part of a heat pipe or a vapor chamber.
16. A method, comprising:
manufacturing an apparatus, including:
providing a base layer;
forming a distribution of separated micro-nucleation sites on the base layer, wherein each of the micro-nucleation sites has a hydrophilic surface; and
forming a distribution nanostructures on the base layer, wherein each of the micro-nucleation sites being adjacent to some of the nanostructures.
17. The method of claim 16, wherein forming the micro-nucleation sites includes:
forming a mask layer over the base layer; and
patterning the mask layer such that mask portions remain on the base layer in locations corresponding to the micro-nucleation sites.
18. The method of claim 16, wherein forming the nanostructures on the base layer includes:
modifying portions of the base layer not covered by mask portions located on the base layer that correspond to locations of the micro-nucleation sites.
19. The method of claim 18, wherein forming the micro-nucleation sites includes:
removing the mask portions to uncover the micro-nucleation sites such that tops of the nanostructures are substantially coplanar with the hydrophillic surfaces of the micro-nucleation sites.
20. The method of claim 16, wherein forming the nanostructures on the base layer includes:
forming a mask layer over the base layer;
patterning the mask layer such that mask portions remain on the base layer corresponding to locations of the micro-nucleation sites;
forming a material layer on the base layer and the mask portions; and
modifying the material layer on the base layer and the mask portions to form the nano structures.