Browsing Universitetsbiblioteket by Author "Lai, Chia-Yun"

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    • Getting Hamaker coefficients with an amplitude-modulation AFM in tapping mode 

      Lai, Chia-Yun; Olukan, Tuza Adeyemi; Santos, Sergio; Chiesa, Matteo (Research report; Forskningsrapport, 2020-07)
      We demonstrate how to get Hamaker coefficients with an amplitude-modulation AFM operated in standard tapping mode. The Hamaker coefficient is a physical parameter that provides chemical information about the surface of samples. It is based or emerges from van der Waals forces. We use a Cypher scanning probe microscope from Asylum Research to demonstrate the method. The method is based on the research ...

    • Setting-up an amplitude-modulation (AM) AFM for tapping mode 

      Santos, Sergio; Lai, Chia-Yun; Olukan, Tuza Adeyemi; Amadei, Carlo Alberto; Chiesa, Matteo (Research report; Forskningsrapport, 2020)
      In this chapter, we are demonstrate how to set-up an amplitude-modulation (AM) AFM for tapping mode operation. We use a Cypher scanning probe microscope from Asylum Research. We employ our techniques for tip characterization and discuss the attractive and repulsive regimes.