Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지
DOI QR코드

DOI QR Code

Nanotribology of PMMA Thin Films Using an AFM

AFM을 이용한 PMMA (Poly Methyl Methacrylate) 박막의 나노트라이볼로지 연구

  • 김승현 (국민대학교 신소재공학부) ;
  • 김용석 (국민대학교 신소재공학부)
  • Published : 2004.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

Nano-scratch tests were performed on PMMA thin films spin-coated on a Si substrate using an atomic force microscopy (AFM) with loads ranging form 10nN to 100nN. At low loads, a ridge pattern was formed on the PMMA thin film surface. No wear particles were observed during the pattern-forming mild wear. At high loads, severe wear by plowing occurred, accompanied by wear particles. The film with the highest hardness showed the highest wear resistance. Friction force generated during the scratching was measured, which was closely related with surface deformation of the film. A simple empirical equation to deduce scratch hardness of the film from a linear fixed-distance scratch test was proposed, and scratching-speed dependency of the scratch hardness was displayed.

Keywords

References

  1. Jpn. J. Appl. Phys. v.37 Imaging elastic properties of soft materials immersed in water using force modulation mode in atomic force microscopy H.Haga;S.Sasaki;M.Morimoto;K.Kawabata;E.Ito;K.Abe;T.Sambongi https://doi.org/10.1143/JJAP.37.3860
  2. J. Appl. Phys. v.79 Micro/ nano scale studies of boundary layers of liquid lubricants for magnetic disks V.N.Koinkar;B.Bhushan https://doi.org/10.1063/1.362361
  3. Thin Solid Films v.273 Experimental observation of single-asperity friction at the atomic scale C.Putman;R.Kaneko https://doi.org/10.1016/0040-6090(95)06795-7
  4. Langmuir v.8 Is the molecular surface of polystyrene really glassy? G.F.Meyers;B.M.DeKoven;J.T.Seitz https://doi.org/10.1021/la00045a042
  5. Science v.255 Orientational ordering of polymers by atomic force microscope tip-surface interaction O.M.Leung;M.C.Goh https://doi.org/10.1126/science.255.5040.64
  6. Wear v.203-204 Initial wear in nanometer-scale contacts on polystyrene D.D.Woodland;W.N.Unertl https://doi.org/10.1016/S0043-1648(96)07415-7
  7. J, Mater. Sci. v.30 An atomic force microscopy study of polyester surfaces J.Jing;P.N.Henriksen;H.Wang https://doi.org/10.1007/BF00356708
  8. Polymer v.39 Scanning force microscopy of polyester films: contact versus non-contact imaging and tip-induced wear experiments J.S.G.Ling;G.J.Leggett;A.J.Murray https://doi.org/10.1016/S0032-3861(98)00121-9
  9. Wear v.205 Wear mechanism in reciprocal scratching of polycarbonate studied by atomic force microscopy A.Khurshudov;K.Kato https://doi.org/10.1016/0043-1648(95)06893-7
  10. Ultramicroscopy v.42 no.44 The atomic force microsope used as a powerful tool for machining surfaces T.A.Jung;A.Moser;H.J.Hug;D.Brodbeck;R.Hofer;H.R.Hidber;U.D.Schwarz https://doi.org/10.1016/0304-3991(92)90464-U