Scanning Tunneling Microscopy and Atomic Force Microscopy of Chemical-Vapor-Deposition Diamond and Diamond-Like Carbon Thin Films

Author(s):  
T. W. Mercer ◽  
D. L. Carroll ◽  
Yong Liang ◽  
D. Bonnell ◽  
T. A. Friedmann ◽  
...  
1997 ◽  
Vol 12 (8) ◽  
pp. 1942-1945 ◽  
Author(s):  
H. J. Gao ◽  
H. X. Zhang ◽  
Z. Q. Xue ◽  
S. J. Pang

Scanning tunneling microscopy (STM) and atomic force microscopy (AFM) investigation of tetracyanoquinodimethane (TCNQ) and the related C60-TCNQ thin films is presented. Periodic molecular chains of the TCNQ on highly oriented pyrolytic graphite (HOPG) substrates were imaged, which demonstrated that the crystalline (001) plane was parallel to the substrate. For the C60-TCNQ thin films, we found that there were grains on the film surface. STM images within the grain revealed that the well-ordered rows and terraces, and the parallel rows in different grains were generally not in the same orientation. Moreover, the grain boundary was also observed. In addition, AFM was employed to modify the organic TCNQ film surface for the application of this type of materials to information recording and storage at the nanometer scale. The nanometer holes were successfully created on the TCNQ thin film by the AFM.


2009 ◽  
Vol 16 (06) ◽  
pp. 881-886 ◽  
Author(s):  
R. MAHESWARAN ◽  
SHIVARAMAN RAMASWAMY ◽  
OJAS MAHAPATRA ◽  
B. PURNACHANDRA RAO ◽  
C. GOPALAKRISHNAN ◽  
...  

Plasma-enhanced chemical vapor deposition has been used to synthesize diamond-like carbon (DLC) thin films. High purity argon and methane gases were used as precursors for the fabrication of the DLC films. The influence of plasma pretreatment on the growth of the DLC films has been studied by subjecting one of the substrates to plasma pretreatment prior to deposition of the DLC films, while maintaining the other substrate as the control. The structural properties of the DLC films have been characterized using atomic force microscopy and Raman spectroscopy. The film grown on the pretreated substrate shows a more uniform coating as compared to the film grown on non-pretreated silicon substrate. The results are discussed based on diffusivity of carbon on silicon and the effect of the plasma pretreatment.


2021 ◽  
Vol 03 (02) ◽  
pp. 128-133
Author(s):  
Zijie Qiu ◽  
Qiang Sun ◽  
Shiyong Wang ◽  
Gabriela Borin Barin ◽  
Bastian Dumslaff ◽  
...  

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.


1993 ◽  
Vol 32 (Part 1, No. 12B) ◽  
pp. 6200-9202 ◽  
Author(s):  
Katsuhiro Uesugi ◽  
Takaharu Takiguchi ◽  
Michiyoshi Izawa ◽  
Masamichi Yoshimura ◽  
Takafumi Yao

Sign in / Sign up

Export Citation Format

Share Document