scholarly journals Atomic Structure Modifications of Diamond-Like Nanocomposite Films: Observation by Raman Spectroscopy, FTIR and STM

1994 ◽  
Vol 349 ◽  
Author(s):  
B. Dorfman ◽  
M. Abraizov ◽  
Fred H. Pollak ◽  
D. Yan ◽  
M. Strongin ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Atomic Structure ◽  
Blue Shift ◽  
Nanocomposite Films ◽  
Scanning Tunneling ◽  
Stretch Vibration Band ◽  
Vibration Band ◽  
Tunneling Microscopy ◽  
Stretch Vibration ◽  
Stm Image

ABSTRACTRaman spectroscopy, FTIR and scanning tunneling microscopy (STM) were used to study diamond-like nanocomposite (DLN) and metal containing DLN (Me-DLN) films. The FTIR spectra showed no appreciable absorption from the C-H stretch vibration band in DLN when 1 kV rf bias voltage was applied. Thermal annealing (450°C for 2 hrs) of (a) DLN and Cr-DLN films caused no change in the Raman spectra while (b) for Pt-DLN films there was a blue shift of both the crystalline (G) and microcrystalline (D) graphite-like features, an increase in the ID/IG intensity ratio and a decrease in the linewidths. The changes observed were more pronounced in the film with the highest Pt concentration. The STM image of this Pt-DLN film revealed a structure of aromatic graphite rings.

scholarly journals Exploring Intramolecular Methyl–Methyl Coupling on a Metal Surface for Edge-Extended Graphene Nanoribbons

2021 ◽  
Vol 03 (02) ◽  
pp. 128-133
Author(s):  
Zijie Qiu ◽  
Qiang Sun ◽  
Shiyong Wang ◽  
Gabriela Borin Barin ◽  
Bastian Dumslaff ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Atomic Force Microscopy ◽  
High Resolution ◽  
Graphene Nanoribbons ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Force Microscopy ◽  
Methyl Methyl ◽  
Atomic Force ◽  
Edge Extension

Intramolecular methyl–methyl coupling on Au (111) is explored as a new on-surface protocol for edge extension in graphene nanoribbons (GNRs). Characterized by high-resolution scanning tunneling microscopy, noncontact atomic force microscopy, and Raman spectroscopy, the methyl–methyl coupling is proven to indeed proceed at the armchair edges of the GNRs, forming six-membered rings with sp3- or sp2-hybridized carbons.

STM Study of a Defect-Related Si(001)-c(4×4) Surface

1996 ◽  
Vol 466 ◽  
Author(s):  
Masamichi Yoshimura ◽  
Kazuyuki Ueda
Keyword(s):  
Atomic Structure ◽  
Hydrogen Desorption ◽  
Scanning Tunneling ◽  
Cooling Process ◽  
Tunneling Microscopy ◽  
Precise Description ◽  
Preparation Methods ◽  
Dimer Model ◽  
Stm Images ◽  
Sample Distance

ABSTRACTWe demonstrate scanning tunneling microscopy studies of a Si(001)-c(4×4) structure which consists of a considerable number of dimer vacancies (missing dimers). Two different preparation methods are examined; one is hydrogen desorption and another is a special annealing and cooling process without hydrogen. The STM images reveal that atomic structure of the c(4×4) prepared without hydrogen is quite different from that prepared with hydrogen and is well described by the missing dimer model. A moiré-like pattern is observed on the c(4×4) surface prepared by hydrogen with an increase in the tip-sample distance, which suggests that the atoms lying in the subsurface should be considered for the precise description of the c(4×4) structure.

Direct Imaging Using Scanning Tunneling Microscopy of the Atomic Structure in Amorphous Co1-xPx

1992 ◽  
pp. 348-355
Author(s):  
J. M. Gonzalez ◽  
F. Cebollada ◽  
M. Vazquez ◽  
M. Aguilar ◽  
M. Pancorbo ◽  
...  
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Atomic Structure ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Direct Imaging

scholarly journals Scanning tunneling microscopy and Raman spectroscopy of polymeric sp–sp2 carbon atomic wires synthesized on the Au(111) surface

Nanoscale ◽  
2019 ◽  
Vol 11 (39) ◽  
pp. 18191-18200 ◽  
Author(s):  
Andi Rabia ◽  
Francesco Tumino ◽  
Alberto Milani ◽  
Valeria Russo ◽  
Andrea Li Bassi ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Scanning Tunneling Microscopy ◽  
Scanning Tunneling ◽  
Vibrational Properties ◽  
Tunneling Microscopy ◽  
Atomic Wires

The structure and electronic and vibrational properties of sp–sp2 carbon atomic wires have been investigated by combined STM/STS and Raman spectroscopy.

Scanning tunneling microscopy of diamond‐like nanocomposite films

1994 ◽  
Vol 65 (11) ◽  
pp. 1379-1381 ◽  
Author(s):  
Zhao Y. Rong ◽  
Mikhail Abraizov ◽  
Benjamin Dorfman ◽  
Myron Strongin ◽  
Xiao‐Qing Yang ◽  
...  
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Nanocomposite Films ◽  
Scanning Tunneling ◽  
Tunneling Microscopy

Atomic structure of tip apex for spin-polarized scanning tunneling microscopy

2011 ◽  
Vol 98 (8) ◽  
pp. 082505 ◽  
Author(s):  
G. Rodary ◽  
J.-C. Girard ◽  
L. Largeau ◽  
C. David ◽  
O. Mauguin ◽  
...  
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Atomic Structure ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Spin Polarized
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