{"id":4934,"date":"2026-06-09T12:04:20","date_gmt":"2026-06-09T04:04:20","guid":{"rendered":"https:\/\/www.opticalcutting.com\/?p=4934"},"modified":"2026-06-09T12:04:20","modified_gmt":"2026-06-09T04:04:20","slug":"danh-bong-quang-hoc","status":"publish","type":"post","link":"https:\/\/www.opticalcutting.com\/vi\/danh-bong-quang-hoc\/","title":{"rendered":"\u0110\u00e1nh b\u00f3ng quang h\u1ecdc K\u1ebdm Selenide: Quy tr\u00ecnh, Th\u00f4ng s\u1ed1 v\u00e0 Ki\u1ec3m so\u00e1t khuy\u1ebft t\u1eadt"},"content":{"rendered":"

\u0110\u00e1nh b\u00f3ng quang h\u1ecdc k\u1ebdm selenide l\u00e0 b\u01b0\u1edbc ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t cu\u1ed1i c\u00f9ng, bi\u1ebfn m\u1ed9t ph\u00f4i ZnSe \u0111\u00e3 m\u00e0i th\u00e0nh m\u1ed9t b\u1ed9 ph\u1eadn quang h\u1ecdc h\u1ed3ng ngo\u1ea1i ch\u1ee9c n\u0103ng. V\u00ec ZnSe c\u1ef1c k\u1ef3 m\u1ec1m (\u0111\u1ed9 c\u1ee9ng Knoop ~120) v\u00e0 ch\u1ee9a selen \u0111\u1ed9c h\u1ea1i, vi\u1ec7c \u0111\u00e1nh b\u00f3ng v\u1eadt li\u1ec7u n\u00e0y \u0111\u00f2i h\u1ecfi c\u00e1c k\u1ef9 thu\u1eadt kh\u00e1c nhau, t\u1ed1c \u0111\u1ed9 lo\u1ea1i b\u1ecf ch\u1eadm h\u01a1n v\u00e0 ki\u1ec3m so\u00e1t an to\u00e0n nghi\u00eam ng\u1eb7t h\u01a1n so v\u1edbi vi\u1ec7c \u0111\u00e1nh b\u00f3ng c\u00e1c v\u1eadt li\u1ec7u h\u1ed3ng ngo\u1ea1i c\u1ee9ng h\u01a1n nh\u01b0 gecmani.<\/p>\n\n\n\n

H\u01b0\u1edbng d\u1eabn n\u00e0y bao g\u1ed3m quy tr\u00ecnh \u0111\u00e1nh b\u00f3ng quang h\u1ecdc k\u1ebdm selenide ho\u00e0n ch\u1ec9nh \u2014 t\u1eeb chu\u1ea9n b\u1ecb tr\u01b0\u1edbc khi \u0111\u00e1nh b\u00f3ng \u0111\u1ebfn ki\u1ec3m tra b\u1ec1 m\u1eb7t cu\u1ed1i c\u00f9ng \u2014 v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 th\u1ef1c t\u1ebf \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t c\u1ea5p laser tr\u00ean c\u00e1c th\u1ea5u k\u00ednh, c\u1eeda s\u1ed5 v\u00e0 \u0111\u1ebf chia ch\u00f9m tia laser CO\u2082.<\/p>\n\n\n\n

\"Vimfun
Loop-type diamond wire saw for graphite,optical glass and so on.<\/figcaption><\/figure>\n\n\n\n

\u0110\u00e1nh b\u00f3ng quang h\u1ecdc k\u1ebdm selenide l\u00e0 g\u00ec?<\/h2>\n\n\n\n

\u0110\u00e1nh b\u00f3ng quang h\u1ecdc k\u1ebdm selenide l\u00e0 m\u1ed9t quy tr\u00ecnh lo\u1ea1i b\u1ecf v\u1eadt li\u1ec7u c\u00f3 ki\u1ec3m so\u00e1t, l\u00e0m gi\u1ea3m \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t t\u1eeb tr\u1ea1ng th\u00e1i m\u00e0i (th\u01b0\u1eddng l\u00e0 Ra 0,3\u20130,8 \u03bcm sau khi m\u00e0i tinh) xu\u1ed1ng c\u00f2n Ra \u2264 5 nm, \u0111\u1ed3ng th\u1eddi duy tr\u00ec \u0111\u1ed9 ph\u1eb3ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng s\u00f3ng truy\u1ec1n c\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng quang h\u1ecdc h\u1ed3ng ngo\u1ea1i. Quy tr\u00ecnh n\u00e0y d\u1ef1a tr\u00ean s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa l\u00e0m m\u1ec1m h\u00f3a h\u1ecdc v\u00e0 m\u00e0i c\u01a1 h\u1ecdc \u2014 th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u00e1nh b\u00f3ng h\u00f3a h\u1ecdc-c\u01a1 h\u1ecdc (CMP) \u2014 \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1ec1 m\u1eb7t kh\u00f4ng tr\u1ea7y x\u01b0\u1edbc, kh\u00f4ng c\u00f3 h\u01b0 h\u1ecfng d\u01b0\u1edbi b\u1ec1 m\u1eb7t tr\u00ean c\u00e1c b\u1ed9 ph\u1eadn ZnSe.<\/p>\n\n\n\n

ZnSe l\u00e0 v\u1eadt li\u1ec7u th\u1ea5u k\u00ednh chi\u1ebfm \u01b0u th\u1ebf cho c\u00e1c h\u1ec7 th\u1ed1ng laser CO\u2082 c\u00f4ng su\u1ea5t cao ho\u1ea1t \u0111\u1ed9ng \u1edf b\u01b0\u1edbc s\u00f3ng 10,6 \u03bcm do d\u1ea3i truy\u1ec1n h\u1ed3ng ngo\u1ea1i r\u1ed9ng (0,6\u201321 \u03bcm) v\u00e0 h\u1ec7 s\u1ed1 h\u1ea5p th\u1ee5 th\u1ea5p. Tuy nhi\u00ean, \u0111\u1ed9 m\u1ec1m v\u00e0 t\u00ednh gi\u00f2n c\u1ee7a n\u00f3 khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t trong nh\u1eefng v\u1eadt li\u1ec7u h\u1ed3ng ngo\u1ea1i kh\u00f3 \u0111\u00e1nh b\u00f3ng nh\u1ea5t. Ngay c\u1ea3 nh\u1eefng sai l\u1ec7ch nh\u1ecf trong quy tr\u00ecnh c\u0169ng c\u00f3 th\u1ec3 g\u00e2y ra k\u1ebft c\u1ea5u v\u1ecf cam, n\u1ee9t d\u01b0\u1edbi b\u1ec1 m\u1eb7t ho\u1eb7c s\u1ee9t m\u1ebb c\u1ea1nh, l\u00e0m suy gi\u1ea3m kh\u1ea3 n\u0103ng truy\u1ec1n laser v\u00e0 r\u00fat ng\u1eafn tu\u1ed5i th\u1ecd c\u1ee7a b\u1ed9 ph\u1eadn.<\/p>\n\n\n\n

C\u00e1c th\u00f4ng s\u1ed1 ch\u00ednh \u0111\u1ec3 \u0111\u00e1nh b\u00f3ng quang h\u1ecdc k\u1ebdm selenide<\/h2>\n\n\n\n

\u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 nh\u1ea5t qu\u00e1n \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd nhi\u1ec1u bi\u1ebfn s\u1ed1 quy tr\u00ecnh. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y t\u00f3m t\u1eaft c\u00e1c ph\u1ea1m vi th\u00f4ng s\u1ed1 th\u1ef1c t\u1ebf cho vi\u1ec7c \u0111\u00e1nh b\u00f3ng m\u1ed9t m\u1eb7t b\u1eb1ng nh\u1ef1a \u0111\u01b0\u1eddng cho th\u1ea5u k\u00ednh v\u00e0 c\u1eeda s\u1ed5 ZnSe.<\/p>\n\n\n\n

Tham s\u1ed1<\/th>Ph\u1ea1m vi khuy\u1ebfn ngh\u1ecb<\/th>Ghi ch\u00fa<\/th><\/tr><\/thead>
Mi\u1ebfng \u0111\u00e1nh b\u00f3ng<\/strong><\/td>Nh\u1ef1a \u0111\u01b0\u1eddng c\u1ea5p quang h\u1ecdc (Gugolz 73 ho\u1eb7c t\u01b0\u01a1ng \u0111\u01b0\u01a1ng)<\/td>Nh\u1ef1a \u0111\u01b0\u1eddng ph\u00f9 h\u1ee3p v\u1edbi h\u00ecnh d\u1ea1ng b\u1ec1 m\u1eb7t; mi\u1ebfng \u0111\u1ec7m t\u1ed5ng h\u1ee3p c\u00f3 nguy c\u01a1 g\u00e2y tr\u1ea7y x\u01b0\u1edbc<\/td><\/tr>
Lo\u1ea1i h\u1ea1t m\u00e0i<\/strong><\/td>Alumina (Al\u2082O\u2083) ho\u1eb7c silica keo<\/td>Alumina \u0111\u1ec3 lo\u1ea1i b\u1ecf v\u1eadt li\u1ec7u; silica keo \u0111\u1ec3 \u0111\u00e1nh b\u00f3ng cu\u1ed1i c\u00f9ng<\/td><\/tr>
K\u00edch th\u01b0\u1edbc h\u1ea1t m\u00e0i<\/strong><\/td>0.05\u20131.0 \u03bcm<\/td>B\u1eaft \u0111\u1ea7u v\u1edbi 1.0 \u03bcm, gi\u1ea3m d\u1ea7n xu\u1ed1ng 0.05 \u03bcm cho giai \u0111o\u1ea1n cu\u1ed1i<\/td><\/tr>
\u0110\u1ed9 pH c\u1ee7a dung d\u1ecbch<\/strong><\/td>9.0\u201310.5 (ki\u1ec1m nh\u1eb9)<\/td>M\u00f4i tr\u01b0\u1eddng ki\u1ec1m cung c\u1ea5p h\u1ed7 tr\u1ee3 h\u00f3a h\u1ecdc tr\u00ean b\u1ec1 m\u1eb7t ZnSe<\/td><\/tr>
\u00c1p su\u1ea5t \u0111\u00e1nh b\u00f3ng<\/strong><\/td>2\u20135 kPa (0.3\u20130.7 psi)<\/td>Th\u1ea5p h\u01a1n gecmani do \u0111\u1ed9 m\u1ec1m c\u1ee7a ZnSe; \u00e1p su\u1ea5t qu\u00e1 m\u1ee9c g\u00e2y h\u01b0 h\u1ea1i d\u01b0\u1edbi b\u1ec1 m\u1eb7t<\/td><\/tr>
T\u1ed1c \u0111\u1ed9 tr\u1ee5c ch\u00ednh<\/strong><\/td>20\u201360 RPM<\/td>T\u1ed1c \u0111\u1ed9 th\u1ea5p h\u01a1n gi\u1ea3m s\u1ef1 t\u00edch t\u1ee5 nhi\u1ec7t v\u00e0 nguy c\u01a1 n\u1ee9t v\u1ee1<\/td><\/tr>
T\u1ed1c \u0111\u1ed9 lo\u1ea1i b\u1ecf v\u1eadt li\u1ec7u<\/strong><\/td>0.5\u20132.0 \u03bcm\/ph\u00fat<\/td>Ch\u1eadm h\u01a1n gecmani (~3\u20135 \u03bcm\/ph\u00fat) \u0111\u1ec3 tr\u00e1nh h\u01b0 h\u1ea1i<\/td><\/tr>
\u0110\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t m\u1ee5c ti\u00eau<\/strong><\/td>Ra \u2264 5 nm (c\u1ea5p laser)<\/td>\u0110o b\u1eb1ng giao thoa k\u1ebf \u00e1nh s\u00e1ng tr\u1eafng<\/td><\/tr>
Ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t m\u1ee5c ti\u00eau<\/strong><\/td>40-20 ho\u1eb7c t\u1ed1t h\u01a1n (v\u1ebft x\u01b0\u1edbc-l\u1ed7)<\/td>Theo MIL-PRF-13830B ho\u1eb7c ISO 10110-7<\/td><\/tr>
M\u00f4i tr\u01b0\u1eddng<\/strong><\/td>Ph\u00f2ng s\u1ea1ch L\u1edbp 1000 ho\u1eb7c t\u1ed1t h\u01a1n<\/td>Ki\u1ec3m so\u00e1t b\u1ee5i selen + ki\u1ec3m so\u00e1t h\u1ea1t<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n

L\u01b0u \u00fd quan tr\u1ecdng:<\/strong> \u00c1p su\u1ea5t \u0111\u00e1nh b\u00f3ng ZnSe n\u00ean th\u1ea5p h\u01a1n 40\u201360% so v\u1edbi \u00e1p su\u1ea5t d\u00f9ng \u0111\u1ec3 \u0111\u00e1nh b\u00f3ng quang h\u1ecdc germanium pohttps:\/\/www.opticalcutting.com\/optics-polishing-machine\/lishing<\/a>. \u00c1p d\u1ee5ng \u00e1p su\u1ea5t c\u1ea5p \u0111\u1ed9 germanium cho ZnSe l\u00e0 m\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t g\u00e2y ra h\u01b0 h\u1ecfng d\u01b0\u1edbi b\u1ec1 m\u1eb7t v\u00e0 c\u00e1c khuy\u1ebft t\u1eadt v\u1ecf cam.<\/p>\n<\/blockquote>\n\n\n\n

C\u00e1ch \u0111\u00e1nh b\u00f3ng quang h\u1ecdc k\u1ebdm selenide: Quy tr\u00ecnh t\u1eebng b\u01b0\u1edbc<\/h2>\n\n\n\n

Quy tr\u00ecnh \u0111\u00e1nh b\u00f3ng quang h\u1ecdc k\u1ebdm selenide tu\u00e2n theo m\u1ed9t chu\u1ed7i nhi\u1ec1u giai \u0111o\u1ea1n. M\u1ed7i giai \u0111o\u1ea1n gi\u1ea3m d\u1ea7n \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t \u0111\u1ed3ng th\u1eddi gi\u1ea3m thi\u1ec3u s\u1ef1 t\u00edch t\u1ee5 h\u01b0 h\u1ecfng d\u01b0\u1edbi b\u1ec1 m\u1eb7t.<\/p>\n\n\n\n

\"Vimfun
Loop-type diamond wire saw for graphite,optical glass and so on.<\/figcaption><\/figure>\n\n\n\n

B\u01b0\u1edbc 1: Ki\u1ec3m tra v\u00e0 chu\u1ea9n b\u1ecb tr\u01b0\u1edbc khi \u0111\u00e1nh b\u00f3ng<\/h3>\n\n\n\n

Tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u \u0111\u00e1nh b\u00f3ng, h\u00e3y ki\u1ec3m tra ph\u00f4i ZnSe \u0111\u00e3 m\u00e0i th\u00f4 xem c\u00f3 b\u1ecb s\u1ee9t m\u1ebb c\u1ea1nh, n\u1ee9t ho\u1eb7c v\u1ebft x\u01b0\u1edbc m\u00e0i s\u00e2u kh\u00f4ng. \u0110o \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t ban \u0111\u1ea7u (th\u01b0\u1eddng l\u00e0 Ra 0,3\u20130,8 \u03bcm sau khi m\u00e0i tinh m\u00e0i \u1ed1ng k\u00ednh<\/a>) v\u00e0 \u0111\u1ed9 ph\u1eb3ng b\u1eb1ng m\u00e1y \u0111o bi\u00ean d\u1ea1ng.<\/p>\n\n\n\n

L\u00e0m s\u1ea1ch chi ti\u1ebft gia c\u00f4ng b\u1eb1ng c\u1ed3n isopropyl v\u00e0 kh\u0103n lau kh\u00f4ng x\u01a1 trong t\u1ee7 h\u00fat. C\u00e1c ph\u00f4i ZnSe nh\u1eadn \u0111\u01b0\u1ee3c t\u1eeb giai \u0111o\u1ea1n c\u1eaft<\/a> c\u00f3 th\u1ec3 mang theo c\u1eb7n l\u00e0m m\u00e1t ho\u1eb7c h\u1ea1t l\u00e0m \u00f4 nhi\u1ec5m b\u00f9n \u0111\u00e1nh b\u00f3ng.<\/p>\n\n\n\n

G\u1eafn ph\u00f4i ZnSe l\u00ean \u0111\u1ed3 g\u00e1 \u0111\u00e1nh b\u00f3ng b\u1eb1ng s\u00e1p quang h\u1ecdc ho\u1eb7c m\u00e2m c\u1eb7p ch\u00e2n kh\u00f4ng. \u0110\u1ea3m b\u1ea3o ti\u1ebfp x\u00fac \u0111\u1ec1u tr\u00ean to\u00e0n b\u1ed9 b\u1ec1 m\u1eb7t \u2014 vi\u1ec7c g\u1eafn kh\u00f4ng \u0111\u1ec1u s\u1ebd t\u1ea1o ra sai s\u1ed1 g\u00f3c trong qu\u00e1 tr\u00ecnh \u0111\u00e1nh b\u00f3ng.<\/p>\n\n\n\n

B\u01b0\u1edbc 2: \u0110\u00e1nh b\u00f3ng th\u00f4 (Lo\u1ea1i b\u1ecf v\u1eadt li\u1ec7u)<\/h3>\n\n\n\n

Ph\u1ebft b\u00f9n alumina (k\u00edch th\u01b0\u1edbc h\u1ea1t 0,5\u20131,0 \u03bcm) l\u00ean m\u1eb7t lap b\u1eb1ng nh\u1ef1a \u0111\u01b0\u1eddng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd. \u0110\u1eb7t t\u1ed1c \u0111\u1ed9 tr\u1ee5c ch\u00ednh \u1edf 30\u201350 v\u00f2ng\/ph\u00fat v\u00e0 \u00e1p su\u1ea5t \u0111\u00e1nh b\u00f3ng \u1edf 3\u20135 kPa.<\/p>\n\n\n\n

Giai \u0111o\u1ea1n n\u00e0y lo\u1ea1i b\u1ecf l\u1edbp h\u01b0 h\u1ecfng d\u01b0\u1edbi b\u1ec1 m\u1eb7t c\u00f2n s\u00f3t l\u1ea1i sau khi m\u00e0i \u2014 th\u01b0\u1eddng s\u00e2u 5\u201315 \u03bcm tr\u00ean ZnSe. M\u1ee5c ti\u00eau lo\u1ea1i b\u1ecf t\u1ed5ng c\u1ed9ng 15\u201325 \u03bcm v\u1eadt li\u1ec7u \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 h\u01b0 h\u1ecfng do m\u00e0i \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf.<\/p>\n\n\n\n

Theo d\u00f5i b\u1ec1 m\u1eb7t m\u1ed7i 10\u201315 ph\u00fat. B\u1ec1 m\u1eb7t ZnSe chuy\u1ec3n t\u1eeb m\u1edd (\u0111\u00e3 m\u00e0i) sang b\u00e1n ph\u1ea3n x\u1ea1 khi \u0111\u1ed9 nh\u00e1m gi\u1ea3m. D\u1eebng \u0111\u00e1nh b\u00f3ng th\u00f4 khi \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t \u0111\u1ea1t Ra 20\u201350 nm.<\/p>\n\n\n\n

B\u01b0\u1edbc 3: \u0110\u00e1nh b\u00f3ng tinh (Ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t)<\/h3>\n\n\n\n

Chuy\u1ec3n sang b\u00f9n silica keo (k\u00edch th\u01b0\u1edbc h\u1ea1t 0,05\u20130,3 \u03bcm) v\u1edbi \u0111\u1ed9 pH \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh th\u00e0nh 9,5\u201310,5. Gi\u1ea3m \u00e1p su\u1ea5t \u0111\u00e1nh b\u00f3ng xu\u1ed1ng 2\u20133 kPa v\u00e0 t\u1ed1c \u0111\u1ed9 tr\u1ee5c ch\u00ednh xu\u1ed1ng 20\u201340 v\u00f2ng\/ph\u00fat.<\/p>\n\n\n\n

B\u00f9n ki\u1ec1m l\u00e0m m\u1ec1m l\u1edbp b\u1ec1 m\u1eb7t ZnSe b\u1eb1ng h\u00f3a h\u1ecdc, cho ph\u00e9p c\u00e1c h\u1ea1t m\u00e0i tinh lo\u1ea1i b\u1ecf v\u1eadt li\u1ec7u v\u1edbi l\u1ef1c c\u01a1 h\u1ecdc t\u1ed1i thi\u1ec3u. H\u00e0nh \u0111\u1ed9ng h\u00f3a h\u1ecdc-c\u01a1 h\u1ecdc n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1ec1 m\u1eb7t kh\u00f4ng tr\u1ea7y x\u01b0\u1edbc tr\u00ean c\u00e1c v\u1eadt li\u1ec7u h\u1ee3p ch\u1ea5t II-VI m\u1ec1m.<\/p>\n\n\n\n

Ti\u1ebfp t\u1ee5c \u0111\u00e1nh b\u00f3ng tinh cho \u0111\u1ebfn khi \u0111\u1ed9 nh\u00e1m b\u1ec1 m\u1eb7t \u0111\u1ea1t Ra \u2264 5 nm v\u00e0 \u0111\u1ed9 tr\u1ea7y x\u01b0\u1edbc-l\u1ed7 \u0111\u1ea1t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt (th\u01b0\u1eddng l\u00e0 40-20 ho\u1eb7c 20-10 cho c\u00e1c \u1ee9ng d\u1ee5ng laser c\u00f4ng su\u1ea5t cao).<\/p>\n\n\n\n

B\u01b0\u1edbc 4: V\u1ec7 sinh v\u00e0 ki\u1ec3m tra sau \u0111\u00e1nh b\u00f3ng<\/h3>\n\n\n\n

C\u1ea9n th\u1eadn th\u00e1o quang h\u1ecdc ZnSe \u0111\u00e3 \u0111\u00e1nh b\u00f3ng ra kh\u1ecfi \u0111\u1ed3 g\u00e1 \u2014 s\u1ed1c nhi\u1ec7t ho\u1eb7c va \u0111\u1eadp c\u01a1 h\u1ecdc c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c v\u1ebft n\u1ee9t nh\u1ecf \u1edf giai \u0111o\u1ea1n n\u00e0y.<\/p>\n\n\n\n

L\u00e0m s\u1ea1ch b\u1eb1ng quy tr\u00ecnh r\u1eeda dung m\u00f4i nhi\u1ec1u b\u01b0\u1edbc (acetone \u2192 c\u1ed3n isopropyl \u2192 n\u01b0\u1edbc kh\u1eed ion) trong m\u00f4i tr\u01b0\u1eddng ph\u00f2ng s\u1ea1ch. T\u1ea5t c\u1ea3 vi\u1ec7c l\u00e0m s\u1ea1ch ph\u1ea3i di\u1ec5n ra trong khu v\u1ef1c th\u00f4ng gi\u00f3 do c\u00f3 c\u1eb7n selenium tr\u00ean b\u1ec1 m\u1eb7t.<\/p>\n\n\n\n

Th\u1ef1c hi\u1ec7n ki\u1ec3m tra cu\u1ed1i c\u00f9ng:<\/p>\n\n\n\n