Contact Angle
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¨ç Roughness ¿¡ µû¸¥ Á¢ÃË°¢ ÃøÁ¤ (Water »ç¿ë)
񃧯(Si-wafer)
800
400
80
¡Ø ¼ýÀÚ°¡ ÀÛÀ»¼ö·Ï Roughness°¡ Ä¿Áü
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Roughness
contact angle
Average
contact angle
COS¥è (Æò±Õ°ª)
1
1
񃧯
37.3
37.86
0.7894
2
38.0
3
38.0
4
38.0
5
38.0
2
1
800
35.3
35.34
0.8156
2
35.4
3
35.4
4
35.3
5
35.3
3
1
400
31.2
31.1
0.8560
2
31.2
3
31.0
4
31.1
5
31.0
4
1
80
21.5
21.68
0.9294
2
21.9
3
21.7
4
22.1
5
21.2
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a) Surface Roughness
Wenzel ½Ä¿¡ ÀÇÇØ Á¢ÃË°¢°ú Á¶µµ »çÀÌÀÇ °ü°è¸¦ ¾Ë ¼ö ÀÖ´Ù.
( : ÃøÁ¤µÈ Á¢ÃË°¢, : »ç¿ëÇÑ °íüÆò¸é°ú ¾×ü »çÀÌ YoungÀÇ ½Ä¿¡¼ ¾òÀ» ¼ö ÀÖ´Â Á¢ÃË°¢, r :Á¶µµºñ)
¡®±âº»¡¯¿¡¼ÀÇ Á¢ÃË°¢À» ÀÌ»óÀûÀÎ Æò¸é Ç¥¸é À§¿¡¼ÀÇ Á¢ÃË°¢()À̶ó°í °¡Á¤Çϸé,
Roughness
Á¶µµºñ (r)
񃧯
1
800
1.033
400
1.084
80
1.177
¡Ø Roughness°¡ Áõ°¡ÇÒ¼ö·Ï Á¶µµºñ(r)°¡ Ä¿Áø´Ù.
b) ºÎÂøÀÏÀÇ °ª
ºÎÂøÀÏ °è»ê¹æ¹ýÀº Y¡¦(»ý·«)
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