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Micro/Nano-tribological Properties of Binary-Doped Ionic Liquid Lubricating Films on Alkyl Silane-Modified Silicon Surfaces


In this work, a series of novel binary-doped ionic liquid lubricating films on alkyl silane N-3-(trimethoxysilyl)propylethylenediamine-modified silicon substrates were fabricated. The micro/nano-tribological properties of the films were analyzed. The results showed that the nano-adhesion reduced 63% compared to the silicon substrate and the nano-friction forces were also dramatically decreased. Moreover, the microscale friction coefficient was decreased to 0.09 under 100 mN, and the durability of the film is longer than 4500 s under 400 mN. The apparent improvements are ascribed to the synergistic effect of the load-bearing capacity of the bonded 1-carboxyethyl-3-methylimidazolium chloride molecules and the highly fluidity self-replenishment property of the mobilized 1-dodecyl-3-methylimidazolium hexafluorophosphate molecules. The research is expected to provide references for producing new surfaces in micro/nano-electromechanical systems.

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  1. 1.

    Quazi, M.M., Ishak, M., Arslan, A., Bashir, N.M., Ali, I.: Scratch adhesion and wear failure characteristics of PVD multilayer CrTi/CrTiN thin film ceramic coating deposited on AA7075-T6 aerospace alloy. Adsorpt. Sci. Technol. 32, 625–647 (2017)

  2. 2.

    Zang, X.N., Qin, Z., Chang, J.Y., Liu, Y.M.: Graphene and carbon nanotube (CNT) in MEMS/NEMS applications. Microelectron. Eng. 132, 192–206 (2015)

  3. 3.

    Marx, T., Shen, X., Dietzel, D., Schirmeisen, A.: Nanotribological properties of hexadecanethiol self-assembled monolayers on Au(111): structure, temperature, and velocity. Langmuir 33, 6005–6010 (2017)

  4. 4.

    Choi, W., Hong, S., Abrahamson, J.T., Han, J.H., Song, C., Nitish, N., Baik, S., Michael, S.: Chemically driven carbon-nanotube-guided thermopower waves. Nat. Mater. 95, 423–429 (2010)

  5. 5.

    Sun, Y., Liu, Y.L., Izumi, S., Chen, X.F., Zhai, Z., Tian, S.H.: Initial stage oxidation on nano-trenched Si (100) surface. Phys. D. Appl. Phys. 51, 015305 (2017)

  6. 6.

    Koskinen, J., Tapper, U., Andersson, P., Varjus, S., Kolehmainen, J., Tervakangas, S., Buss, W.: Friction reduction by texturing of DLC coatings sliding against steel under oil lubrication. Surf. Coat. Technol. 204, 3794–3797 (2010)

  7. 7.

    Barclay, T.G., Hegab, H.M., Clarke, S.R., Milena, G.M.: Versatile surface modification using polydopamine and related polycatecholamines: chemistry, structure, and applications. Adv. Mater. Interfaces 4, 1601192 (2017)

  8. 8.

    Shahsavan, H., Quinn, J., Eon, J.D., Zhao, B.: Surface modification of polydimethylsiloxane elastomer for stable hydrophilicity, optical transparency and film lubrication. Colliods Surf. A 482, 267–275 (2015)

  9. 9.

    Cao, X.A., Gan, X.H., Peng, Y.T., Wang, Y.X., Zeng, X.Z., Liang, H.J., Deng, J.N., Zou, K.: An ultra-low frictional interface combining FDTS SAMs with molybdenum disulfide. Nanoscale. 10, 378 (2017)

  10. 10.

    Gorbunov, V.A., Akimenko, S.S., Myshlyavtsev, A.V.: Cross-impact of surface and interaction anisotropy in the self-assembly of organic adsorption monolayers: Monte Carlo and transfer-matrix study. Phys. Chem. Chem. Phys. 19, 17111–17120 (2017)

  11. 11.

    Briand, E., Gu, C., Boujday, S., Salmain, M., Herry, J.M., Pradier, C.M.: Functionalisation of gold surfaces with thiolate SAMs: topography/bioactivity relationship—a combined FT-RAIRS. AFM and QCM investigation. Surf. Sci. 601, 3850–3855 (2017)

  12. 12.

    Huo, L., Du, P., Zhou, H., Zhang, K., Liu, P.: Fabrication and tribological properties of self-assembled monolayer of n-alky ltrimethoxysilane on silicon: effect of SAM alkyl chain length. Appl. Surf. Sci. 396, 865–869 (2017)

  13. 13.

    Leong, J.Y., Zhang, J., Sinha, S.K., Holmes, A., Spikes, H., Reddyhoff, T.: Confining liquids on silicon surfaces to lubricate MEMS. Tribol. Lett. 59, 15 (2015)

  14. 14.

    Porada, J.H., Zauser, D., Feucht, B., Stubenrauch, C.: Tailored ionic liquid-based surfactants for the formation of microemulsions with water and a hydrophobic ionic liquid. Soft Matter 12, 6352–6356 (2016)

  15. 15.

    Arcifa, A., Rossi, A., Ramakrishna, S.N., Marzal, R.E., Sheehan, A., Spencer, N.D.: Lubrication of Si-based tribopairs with a hydrophobic ionic liquid: the multiscale influence of water. J. Phys. Chem. 122, 7331–7343 (2018)

  16. 16.

    Jaroniec, M., Jaroniec, J.A.: A linear relationship between partition ratio and composition of a binary mobile phase in reversed-phase liquid chromatography using chemically bonded stationary phases. Sep. Sci. 9, 236–239 (2015)

  17. 17.

    Krishna, T.S., Narendra, K., Sankar, M.G., Nain, A.K., Munibhadrayya, B.: Thermodynamic, excess and optical studies on the intermolecular interactions of binary liquid mixtures of imidazolium based ILs. Chem. Therm. 98, 262–271 (2016)

  18. 18.

    Gusain, R., Kokufu, S., Bakshi, P.S., Utsounomiya, T., Ichii, T., Sugimura, H., Khatri, O.P.: Self-assembled thin film of imidazolium ionic liquid on a silicon surface: Low friction and remarkable wear-resistivity. Appl. Surf. Sci. 364, 878–885 (2016)

  19. 19.

    Patil, S.K., Vadiyar, M.M., Bhise, S.C., Patil, S.A., Awale, D.V., Ghorpade, U.V., Kim, J.H., Ghule, A.V., Kolekar, S.S.: Hydroxy functionalized ionic liquids as promising electrolytes for supercapacitor study of α-Fe2O3 thin films. Mater. Sci. Electron. 28, 11738–11748 (2017)

  20. 20.

    Wang, Y.X., Cao, X.A., Lang, H.J., Zeng, X.Z., Chen, B., Chen, R.L., Peng, Y.T.: Enhanced tribological properties of the composite films based on ionic liquid with MoS2 nanosheets as additives. New J. Chem. 42, 4887–4892 (2018)

  21. 21.

    GoTz, M., Reimert, R., Bajohr, S., Schnetzer, H., Wimberg, J., Schubert, T.J.S.: Long-term thermal stability of selected ionic liquids in nitrogen and hydrogen atmosphere. Thermochim. Acta 600, 82–88 (2015)

  22. 22.

    Sharma, V., Dorr, N., Erdemir, A., Aswath, P.B.: Antiwear properties of binary ashless blend of phosphonium ionic liquids and borate esters in partially formulated oil (No Zn). Tribol. Lett. 67, 42 (2019)

  23. 23.

    Rodríguez, H., Williams, M., Wilkes, J.S., Rogers, R.D.: Ionic liquids for liquid-in-glass thermometers. Green Chem. 10, 501–507 (2018)

  24. 24.

    Trachsel, M., Pittini, R., Dual, J.: Evaluation and quantification of friction using ionic liquids in small, self lubricating journal bearings. Tribol. Int. 122, 15–22 (2018)

  25. 25.

    Palacio, M., Bhushan, B.: Ultrathin wear-resistant ionic liquid films for novel MEMS/NEMS applications. Adv. Mater. 20, 1194–1198 (2010)

  26. 26.

    Palacio, M., Bhushan, B.: Surface potential and resistance measurements for detecting wear of chemically-bonded and unbonded molecularly-thick perfluoropolyether lubricant films using atomic force microscopy. Colloid Interface Sci. 315, 261–269 (2007)

  27. 27.

    Pu, J.B., Liu, X.F., Wang, L.P., Xue, Q.J.: Formation and tribological properties of two-component ultrathin ionic liquid films on Si. Surf. Int. Anal. 43, 1332–1340 (2011)

  28. 28.

    Butt, H.J., Cappella, B., Kappl, M.: Force measurements with the atomic force microscope: technique, interpretation and applications. Surf. Sci. Rep. 59, 1–152 (2005)

  29. 29.

    Liu, W.H., Bonin, K., Guthold, M.: Easy and direct method for calibrating atomic force microscopy lateral force measurements. Rev. Sci. Instrum. 78, 321–337 (2007)

  30. 30.

    Clifford, C.A., Seah, M.P.: The determination of atomic force micro-scope cantilever spring constants via dimensional methods for nanomechanical analysis. Nanotechnology 16, 1666–1680 (2005)

  31. 31.

    Feng, D.D., Peng, J.F., Liu, S.S., Zheng, X.J., Yan, X.Y., He, W.Y.: Influences of thickness, scanning velocity and relative humidity on the frictional properties of WS2 nanosheets. Mater. Res. Exp. 5, 15–26 (2018)

  32. 32.

    Pu, J.B., Huang, D.M., Wang, L.P., Xue, Q.J.: Tribology study of dual-layer ultrathin ionic liquid films with bonded phase: influences of the self-assembled under layer. Colliods Surf. A 372, 155–164 (2010)

  33. 33.

    Fleming, I., Williams, D. H.: Spectroscopic Methods in Organic Chemistry. McGraw-Hill, New York (1966)

  34. 34.

    Allara, D.L., Parikh, A.N., Rondelez, F.: Evidence for a unique chain organization in long chain silane monolayers deposited on two widely different solid substrates. Langmuir 11, 2357–2360 (1995)

  35. 35.

    Zhang, Q., Archer, L.A.: Boundary lubrication and surface mobility of mixed alkylsilane self-assembled monolayers. J. Phys. Chem. B. 107, 13123–13132 (2003)

  36. 36.

    Tamchang, S.W., Biebuyck, H.A., Whitesides, G.M., Jeon, N., Nuzzo, R.G.: Self-assembled monolayers on gold fenerated from alkanethiols with the structure RNHCOCH2SH. Langmuir 11, 4371–4382 (1995)

  37. 37.

    Song, S.Y., Zhou, J.F., Qu, M.N., Yang, S.R., Zhang, S.R.: Preparation and tribological behaviors of an amide-containing stratified self-assembled monolayers on silicon surface. Langmuir 24, 105–109 (2008)

  38. 38.

    Vilt, S.G., Leng, Z., Booth, B.D., Mccabe, C., Jennings, G.K.: Surface and frictional properties of two-component alkyl silane monolayers and hydroxyl-terminated monolayers on silicon. Phys. Chem. C. 113, 14972–14977 (2009)

  39. 39.

    Ren, S.L., Yang, S.R., Wang, J.Q., Liu, W.M., Zhao, Y.P.: Preparation and tribological studies of stearic acid self-assembled monolayers on polymer-coated silicon surface. Chem. Mater. 16, 428–434 (2004)

  40. 40.

    Frisbie, C.D., Rozanyal, L.F., Noy, A., Wrighton, M., Lieber, C.M.: Functional group imaging by chemical force microscopy. Science 265, 2071 (1994)

  41. 41.

    Bhushan, B., Palacio, M., Kinzig, B.: AFM-based nanotribological and electrical characterization of ultrathin wear-resistant ionic liquid films. Colliod Interface Sci. 317, 275–287 (2008)

  42. 42.

    Long, F., Yasaei, P., Yao, W.T., Salehi-Khojin, A., Shahbazian-Yassar, R.: Anisotropic friction of wrinkled graphene grown by chemical vapor deposition. ACS Appl. Mater. Interfaces 9, 20922–20927 (2017)

  43. 43.

    Perry, S.S., Yan, X.P., Limpoco, F.T., Lee, S., Muller, M., Spencer, N.D.: Tribological properties of poly(L-lysine)-graft-poly(ethylene glycol) films: influence of polymer architecture and adsorbed conformation. Appl. Mater. Interfaces 1, 1224–1230 (2009)

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This work was supported by the National Natural Science Foundation of China [Grant Nos. 51405413, 51605409], Special Projects of Changsha Zhuzhou Xiangtan National Independent Innovation Demonstration Zone [Grant Nos. 2018XK2302, 2017XK2107], and Natural Science Foundation of Hunan Province [Grant No. 2018JJ4055].

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Correspondence to Sisi Liu.

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Liu, S., Ruan, S., Huang, X. et al. Micro/Nano-tribological Properties of Binary-Doped Ionic Liquid Lubricating Films on Alkyl Silane-Modified Silicon Surfaces. Tribol Lett 68, 12 (2020).

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  • Silicon
  • Binary-doped ionic liquids
  • Atomic force microscopy
  • Lubricating films
  • Micro/nano-tribological properties