Multiple image contrast inversions are observed along with the increase of modulation frequency for contact resonance atomic force microscopy (CR-AFM) imaging of a highly oriented pyrolytic graphite (HOPG) specimen. Analysis of the contact vibrational spectra indicates that the inversions can be attributed to structure-induced variations of tip-sample contact mechanics. Contact stiffness and damping at HOPG step edges exhibit significant increases relative to those in the flat regions. For quantitative evaluation of mechanical properties in CR-AFM, coupling effects of the surface geometry must be considered. (C) 2015 Author(s).
机构:
Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA
Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA
NIST, Mat Measurement Lab, Boulder, CO 80305 USAPurdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA
Wagner, Ryan
Moon, Robert J.
论文数: 0引用数: 0
h-index: 0
机构:
US Forest Serv, Forest Prod Lab, Madison, WI 53726 USAPurdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA
Moon, Robert J.
Raman, Arvind
论文数: 0引用数: 0
h-index: 0
机构:
Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA
Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USAPurdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA
机构:
Indira Gandhi Ctr Atom Res, Met & Mat Grp, Kalpakkam 603102, Tamil Nadu, India
Jindal Univ, Raigarh 496109, Chhattisgarh, IndiaGeorg August Univ Gottingen, Phys Inst 1, D-37077 Gottingen, Germany
Phani, M. K.
Kumar, A.
论文数: 0引用数: 0
h-index: 0
机构:
Indira Gandhi Ctr Atom Res, Met & Mat Grp, Kalpakkam 603102, Tamil Nadu, IndiaGeorg August Univ Gottingen, Phys Inst 1, D-37077 Gottingen, Germany
Kumar, A.
Arnold, W.
论文数: 0引用数: 0
h-index: 0
机构:
Georg August Univ Gottingen, Phys Inst 1, D-37077 Gottingen, Germany
Saarland Univ, Dept Mat Sci & Engn, D-66123 Saarbrucken, GermanyGeorg August Univ Gottingen, Phys Inst 1, D-37077 Gottingen, Germany
Arnold, W.
Samwer, K.
论文数: 0引用数: 0
h-index: 0
机构:
Georg August Univ Gottingen, Phys Inst 1, D-37077 Gottingen, GermanyGeorg August Univ Gottingen, Phys Inst 1, D-37077 Gottingen, Germany