DOI: 10.1063/1.103749. Visible mechanism of liquid crystals on graphite under scanning tunneling microscopy

Visible mechanism of liquid crystals on graphite under scanning tunneling microscopy

10.1063/1.103749

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

Liquid crystals on graphite have been observed by scanning tunneling microscopy. Although an isolated 4-n-octyl-4′-cyanobiphenyl (8CB) molecule shows a wide 11 eV energy gap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO), its image could be obtained by tunneling bias around 800 mV far below this energy gap. The fact that 8CB with a large energy gap could be imaged was confirmed by a spectroscopic measurement. This LC molecule visualizing mechanism is interpreted from one viewpoint as the result of energy level shift possibly caused by molecule-substrate interaction and from another viewpoint as the result of periodic molecules forming an energy band.

Bibliography

Nejoh, H. (1990). Visible mechanism of liquid crystals on graphite under scanning tunneling microscopy. Applied Physics Letters, 57(27), 2907â2909.

Authors 1

H. Nejoh (first)

References 11 Referenced 25

10.1103/PhysRevLett.60.2398 / Phys. Rev. Lett. (1988)
10.1038/344641a0 / Nature (1990)
{'key': '2024020301484824700_r3', 'first-page': '137', 'volume': '338', 'year': '1990', 'journal-title': 'Nature'} / Nature (1990)
10.1063/1.103015 / Appl. Phys. Lett. (1990)
{'key': '2024020301484824700_r5'}
10.1016/0039-6028(86)90793-4 / Surf. Sci. (1986)
{'key': '2024020301484824700_r7'}
{'key': '2024020301484824700_r8'}
{'key': '2024020301484824700_r9', 'first-page': '28', 'volume': '613', 'year': '1989', 'journal-title': 'IBM Syst. J.'} / IBM Syst. J. (1989)
{'key': '2024020301484824700_r10'}
10.1103/PhysRevB.15.4716 / Phys. Rev. B (1977)

Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 9:05 a.m.)
Deposited	1 year, 6 months ago (Feb. 2, 2024, 8:48 p.m.)
Indexed	1 year, 6 months ago (Feb. 2, 2024, 9:10 p.m.)
Issued	34 years, 7 months ago (Dec. 31, 1990)
Published	34 years, 7 months ago (Dec. 31, 1990)
Published Print	34 years, 7 months ago (Dec. 31, 1990)

Funders 0

None

BibTeX

@article{Nejoh_1990, title={Visible mechanism of liquid crystals on graphite under scanning tunneling microscopy}, volume={57}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.103749}, DOI={10.1063/1.103749}, number={27}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Nejoh, H.}, year={1990}, month=dec, pages={2907–2909} }

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