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  • Atomic Force Microsopy(AFM)ÀÇ ÀÌÇØ¿Í ´Ù¸¥ characterization method¿ÍÀÇ ¿¬°è   (1 ÆäÀÌÁö)
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Atomic Force Microsopy(AFM)ÀÇ ÀÌÇØ¿Í ´Ù¸¥ characterization method¿ÍÀÇ ¿¬°è

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ÆÄÀÏ : Atomic Force Microsopy(AFM)ÀÇ ÀÌÇØ¿Í ´Ù¸¥ characte~.hwp   [Size : 622 Kbyte ]
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SPM °ü·Ã °³¹ß ±â¼ú·Î´Â LFM(Lateral Force Microscope): Ç¥¸éÀÇ ¸¶Âû·ÂÀ» Àç´Â ¿øÀÚÇö¹Ì°æ, FMM(Force Modulation Microscope): ½Ã·áÀÇ °æµµ(ÌãÓø)¸¦ Àç´Â ¿øÀÚÇö¹Ì°æ, PDM(Phase Detection Microscope) : ½Ã·áÀÇ Åº¼º ¹× Á¡¼ºµîÀ» Àç´Â ¿øÀÚÇö¹Ì°æ, MFM(Magnetic Force Microscope): ÀÚ±â·Â(í¸Ñ¨Õô)À» Àç´Â ¿øÀÚÇö¹Ì°æ, EFM(Electrostatic Force Microscope): ½Ã·áÀÇ Àü±âÀû Ư¼ºÀ» Àç´Â ¿øÀÚÇö¹Ì°æ, SCM(Scanning Capacitance Microscope): capacitance¸¦ Àç´Â ¿øÀÚÇö¹Ì°æ, EC-SPM(Electrochemistry Scanning Probe Microscope): ½Ã·áÀÇ Àü±âÈ­ÇÐÀû ¼ºÁúÀ» ÃøÁ¤ÇÏ´Â ¿øÀÚÇö¹Ì°æ µîÀÌ ÀÖ´Ù.
¿©±â¼­´Â Áö±Ý±îÁö AFMÀÌ ¾î¶²½ÄÀ¸·Î ÀÀ¿ëµÇ¾î ¿Ô´ÂÁö »ìÆ캸°í AFMÀÇ È°¿ë¿¡ ´ëÇÑ ¹ßÀü¹æ¾ÈÀ» ¾Ë¾Æº¸°íÀÚ ÇÑ´Ù.
¸ñÂ÷/Â÷·Ê

1. Introduction

2. AFM ÀÌÇØ ¹× ÀåÄ¡ÀÇ ÃÖÀûÈ­

Cantilevers
Tip characterization
Sample preparation
Resolution enhancement

3. SampleÀÇ mechanical properties ÃøÁ¤

Adhesion
Hardness
Friction

4. Morphology measurements

5. ´Ù¸¥ characterization method¿ÍÀÇ ¿¬°è

6. Future Perspective

º»¹®/³»¿ë
AFMÀº PID feedback controller¸¦ »ç¿ëÇÏ°í Àִµ¥, °¢ controllerÀÇ mode¿¡ µû¸¥ imageÀÇ oscillation Á¤µµ º¯È­¸¦ È®ÀÎÇÒ ¼ö ÀÖ´Ù. Áï over-tuned feedback loopÀÇ °æ¿ì ¹ß»ýµÇ´Â ÀÜÁÖ¸§ imageÀÇ Çö»óÀ» Á¦¾îÇÒ ¼ö ÀÖÀ¸¸ç, sample¸¶´Ù ´Ù¸¥ °ªÀ» °®´Â´Ù.[3]
À̸¦ ÅëÇؼ­ imageÀÇ resolution¿¡ ¿µÇâÀ» ÁÖ´Â ÀÎÀÚ´Â humidity¿Í building and acoustic vibration¿Ü¿¡ feedback loopÀÇ gainµµ ÀÛ¿ëÇÔÀ» ¾Ë ¼ö ÀÖ´Ù.
Building vibrationÀº accelerometer·Î ÃøÁ¤ÇÏ¿© G Á¤µµ¸é ¾çÈ£Çϸç, acoustic vibrationÀº angstrom ´ÜÀ§·Î ÀÛ¾÷½Ã tip°ú sample¿¡ ½±°Ô ¿µÇâÀ» ÁÖ¾î image¿¡ noise¸¦ ¹ß»ý½ÃŲ´Ù. À̸¦ ÇØ°áÇϱâ À§Çؼ­´Â vibration isolation tableÀ» »ç¿ëÇÏ°í ÁÖº¯¿¡´Â ÀüÀÚ±âÀå ¹ß»ý ÀåÄ¡¸¦ Á¦°ÅÇÏ°í ¼ÒÀ½Àú°¨ ¼³ºñ¸¦ ÇÏ´Â°Ô ÁÁ´Ù.[4]
»ó¿Â¿¡¼­ÀÇ humidityÀÇ ¿µÇâÀ¸·Î ÀÎÇÑ capillary force À¯¹ßÀº ÀϺνÇÇè¿¡¼­´Â ±× ¿µÇâÀÌ ÀûÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù. Áï silica particleÀÇ width¿¡ ´ëÇÑ TEM°á°ú¿Í ºñ±³ÇÒ ¶§ 10%À̳»ÀÇ ¿ÀÂ÷¸¦ º¸¿©¼­ adsorbed water layerÀÇ ¿µÇâÀÌ Àû¾ú´Ù.[1] ±×·¯³ª ¿øõÀûÀ¸·Î water vapor¿¡ ÀÇÇÑ tip contaminationÀ» ¸·±â À§Çؼ­´Â vacuum¿¡¼­ ÀÛ¾÷À»¡¦(»ý·«)
Âü°í¹®Çå
[1] Kathryn A.Ramirez-Aguilar, Kathy L.Rowlen, Tip characterization from AFM inages of nanometric spherical particles, Langmuir, 1998, 14, 2562-2566
[2] Y.E.Strausser, M.G.Heaton, Scanning probe microscopy-technology and recent innovations, Internation laboratory, 1995, April, 37-40
[3] Susan M.Lord, Shelby F.Nelson, Using an oscilloscope to optimize AFM images, Surface topography applications-Burleigh, 1998, 10
[4] Sergei N.Magonov, M.H.Whangbo, Surface analysis with STM and AFM, VCH press, 1996
[5] N.John DiNardo, Nanoscale characterization of surfaces and interfaces, VCH press, 1994
[6] W.Richard Bowen, Nidal Hilal, Robert W.Lovitt, Chris J.Wright, An AFM stduy of the adhesion of a silica shpere to a silica surface-effects of surface cleaning, Colloids and surfaces, 1999, 157, 117-125
[7] P.Lemoine, J.Mc Laughlin, Nanomechanical measurements on polymers using contact mode AFM, Thin solid flims, 1999, 339, 258-264
[8] S.Ramesh, Y.Cohen, D.Aurbach, A.Gedanken, AFM investigation of the surface topography and adhesion of nickel nanoparticles to submicrospherical silica, Chemical physics letters, 1998, 287, 461-467
[9] Kathryn A.Rairez-Aguilar, David W.Lehmpuhl, Amy E.Michel, John W.Birks, Kathy L.Rowlen, AFM for the analysis of environmental particles, Ultramicroscopy, 1999, 77, 187-194
[10] L.M.Sanchez-Brea, J.A.Gomez-Pedrero, E.Bernabeu, Measurement of surface defects on thin steel wires by AFM, Applied surface science, 1999, 150, 125-130
[11] Tatiana N.Boronina, Isabelle Lagadic, Gleb B.Sergeev, Kenneth J.Klabunde, Activated and nanoactivated forms of zinc power : reactivity toward chlorocarbons in water and AFM studies of surface morphologies, Environmental science & technology, 1998, 32, 2614-2622
[12] Yen Wei, Danliang Jin, Daniel J.Brennan, Dimaries Nieves Rivera, Qing Zhuang, N.John DiNardo, Kunyuan Qiu, AFM study of organic-inorganic hybrid materials, Chemical materials, 1998, 10, 769-772
[13] S.Gauthier, J.P.Aime, T.Bouhacina, A.J.Arrias, B.Deabat, Study of grafted silane molecules in silica surface with an AFM, Lagmuir, 1996, 12, 5126-5137
[14] C.E.Rabke, A.Samsavar, AFM : a complimentary technique for SEM investigation, Surface topography applications-Burleigh, 1998, 4
[15] K.K.Nanda, S.N.Sarangi, S.N.Sahu, Measurement of surface roughness by AFM and RBS of CdS nanocrystalline films, Applied surface science, 1998, 133, 293-297
[16] Reena Banga, Jack Yarwood, Anthony M.Morgan, Brian Evans, Jaqueline Kells, FTIR and AFM studies of the kinetics and self-assembly of alkyltrichlorosilanes and (perfluoroalkyl) trichlorosilanes onto glass and silicon, Lagmuir, 1995, 11, 4393-4399
[17] Lennart Berfstrom, Hamaker constants of inorganic materials, Advances in colloid and interface science, 1997, 70, 125-169
[18] Zbigniew Adamczyk, Pawel Weronski, Application of the DLVO theory for particle deposition problems, Advances in colloid and interface science, 1999, 83, 137-226


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