Facile Crystallization of Ice Ih via Formaldehyde Hydrate in Ultrahigh Vacuum under Cryogenic Conditions

2021 ◽  
Author(s):  
Jyotirmoy Ghosh ◽  
Gaurav Vishwakarma ◽  
Subhadip Das ◽  
Thalappil Pradeep
Keyword(s):  
Ultrahigh Vacuum ◽  
Cryogenic Conditions

Iron assisted formation of CO2 over condensed CO and its relevance to interstellar chemistry

2020 ◽  
Vol 22 (16) ◽  
pp. 8491-8498
Author(s):  
Rabin Rajan J. Methikkalam ◽  
Jyotirmoy Ghosh ◽  
Radha Gobinda Bhuin ◽  
Soumabha Bag ◽  
Gopi Ragupathy ◽  
...  
Keyword(s):  
Ultrahigh Vacuum ◽  
Catalytic Conversion ◽  
Interstellar Chemistry ◽  
Cryogenic Conditions

Catalytic conversion of CO to CO2 assisted by neutral iron atoms has been investigated in ultrahigh vacuum (UHV) under cryogenic conditions (10 K).

Formation of Cubic Ice via Clathrate Hydrate, Prepared in Ultrahigh Vacuum under Cryogenic Conditions

2019 ◽  
Vol 11 (1) ◽  
pp. 26-32 ◽  
Author(s):  
Jyotirmoy Ghosh ◽  
Radha Gobinda Bhuin ◽  
Gaurav Vishwakarma ◽  
Thalappil Pradeep
Keyword(s):  
Ultrahigh Vacuum ◽  
Clathrate Hydrate ◽  
Cryogenic Conditions

IONIZATION GAGE FOR ULTRAHIGH VACUUM

2019 ◽  
Vol 68 ◽  
pp. 126-133
Author(s):  
V. K. Bazylev ◽  
◽  
A. M. Zhidkov ◽  
V. A. Korotchenko ◽  
V. E. Skvortsov ◽  
...  
Keyword(s):  
Ultrahigh Vacuum

Ultrahigh-Vacuum Electron Microscopy for Gold Nanostructures

2001 ◽  
Vol 7 (S2) ◽  
pp. 920-921
Author(s):  
Yukihito Kondo ◽  
Kimiharu Okamoto ◽  
Mikio Naruse ◽  
Toshikazu Honda ◽  
Mike Kersker
Keyword(s):  
Electron Microscopy ◽  
Field Emission ◽  
Electronic Devices ◽  
Ultrahigh Vacuum ◽  
Gold Nanostructures ◽  
Scanning Tunneling ◽  
Nano Scale ◽  
Transmission Electron ◽  
Column Type ◽  
Schottky Type

Ultrahigh-vacuum transmission electron microscopy (UHVTEM) has become increasingly popular for the direct observation of nanostructures having clean surfaces, since industrial requirements to make and research nano-scale materials have been rapidly growing for quantum or nanoscale electronic devices. Since we have first developed high resolution UHVTEM in 1986, the UHVTEMs have been evolved with steady advances such as UHV compatible goniometer, field emission gun or etc. Furthermore, the UHVTEM started to combine analytical capabilities such as energy dispersive X-ray spectrometer, in-column type energy filter and etc., and to combine STM (scanning tunneling microscope). The UHV technology is essential for the analysis, because the portion of contaminant in a nano-scale specimen increases as the size of the specimen goes down. This paper reports the results of gold nanostructures by recently the developed UHVTEM.Figure 1 shows recently developed UHVTEM with Schottky type field emission gun.

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