نتایج جستجو برای: Scanning Tunneling Microscope

تعداد نتایج: 203968  

Journal: :The Review of Laser Engineering 1991

Journal: :Journal of the Japan Society for Precision Engineering 1987

During the past two decades, there have been tremendous developments in near-field imaging and local probing techniques. Examples are the Scanning Tunneling Microscope (STM), Atomic Force Microscope (AFM), Near-field Scanning Optical Microscope (NSOM), Photon Scanning Tunneling Microscope (PSTM), and Scanning Thermal Microscope (SThM).Results showed that the average reflectance for a dopant con...

Journal: :journal of sciences, islamic republic of iran 2010
v. ahmadi

field ion microscopy (fim) and scanning tunneling microscopy (stm) have found a wide application in nanotechnology. these microscopes use a metallic nanotip for image acquisition. resolution of fim and stm images depends largely on the radius of nanotip apex; the smaller the radius the higher the resolution. in this research, for tungsten nanotip fabrication, electrochemical etching of tungsten...

2007
Vivek Venkatachalam Eric W. Hudson David E. Pritchard

Journal: :Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures 1991

Journal: :Journal of Chemical Education 1999

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1992
D P Allison L A Bottomley T Thundat G M Brown R P Woychik J J Schrick K B Jacobson R J Warmack

Reproducible scanning tunneling microscope and atomic force microscope images of entire molecules of uncoated plasmid DNA chemically bound to surfaces are presented. The chemically mediated immobilization of DNA to surfaces and subsequent scanning tunneling microscope imaging of DNA molecules demonstrate that the problem of molecular instability to forces exerted by the probe tip, inherent with...

Journal: :international journal of nano dimension 0
z. sobat catalysis and nanotechnology research division, research institute of petroleum industry, p. o. box: 1485733111, tehran, iran. s. sadegh hassani catalysis and nanotechnology research division, research institute of petroleum industry, p. o. box: 1485733111, tehran, iran.

scanning near-field optical microscopy (snom) is a member of scanning probe microscopes (spms) family which enables nanostructure investigation of the surfaces on a wide range of materials. in fact, snom combines the spm technology to the optical microscopy and in this way provide a powerful tool to study nano-structures with very high spatial resolution. in this paper, a qualified overview of ...

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