The development of a high vacuum glove box control system with cycling cleaning and regeneration

2017 ◽  
Author(s):  
Ming-Sen Hu ◽  
Liang-Hsiu Chen
Keyword(s):  
Control System ◽  
High Vacuum

scholarly journals Digital Linear Control System for a Magnetic Bearing System of a High Vacuum Turbomolecular Pump

2010 ◽  
Vol 19 (4) ◽  
pp. 256-264
Author(s):  
Seung-Kook Ro ◽  
Jin-Ho Kyung ◽  
Jong-Kweon Park ◽  
Woo-Ho Nam ◽  
Deug-Yong Koh
Keyword(s):  
Control System ◽  
High Vacuum ◽  
Magnetic Bearing ◽  
Linear Control System ◽  
Linear Control ◽  
Turbomolecular Pump ◽  
Bearing System

Design and Experimental Study of Deposition Temperature Control System in Ultra-High Vacuum

2012 ◽  
Vol 571 ◽  
pp. 564-568
Author(s):  
Zhi Dan Yan ◽  
Li Dong Sun ◽  
Chun Guang Hu ◽  
Xiao Tang Hu ◽  
Peter Zeppenfeld
Keyword(s):  
Control System ◽  
Temperature Control ◽  
Deposition Temperature ◽  
Film Growth ◽  
High Vacuum ◽  
Ultra High Vacuum ◽  
Temperature Control System ◽  
Growth Morphology ◽  
Precise Control ◽  
Key Factor

Deposition temperature is a key factor influencing the growth morphology of thin-films, aiming at this phenomenon, a precise control system of deposition temperature in ultra-high vacuum is developed in the paper. It can realize accurate temperature control in a range of 150K to 450K during experiment by combination of resistance heating up and liquid helium cooling down strategies, which is benefit to further understand the temperature-depended mechanism of organic molecule thin-film growth. Besides, it is experimentally studied that the growth morphology of p-6p molecules on a mica substrate is closely related to the substrate deposition temperature, indicating that the length of p-6p nano-fibers is proportional to the deposition temperature, while their distribution density is inversely proportional to the temperature.

Key Technologies Related to High Vacuum Dry Pump

2011 ◽  
Vol 130-134 ◽  
pp. 1696-1699
Author(s):  
Jie Li ◽  
Shu Yi Gan ◽  
Ping Liang ◽  
Jia Xin Dai ◽  
Da Peng Chen ◽  
...  
Keyword(s):  
Control System ◽  
Semiconductor Industry ◽  
High Vacuum ◽  
Electronic Control ◽  
Pump Unit ◽  
Electronic Control System ◽  
Key Points ◽  
Key Technologies ◽  
Gas Pumping

High vacuum dry pump is a typical technology-intensive mechatronics product. It is mainly composed of a specially designed gas-pumping structure and a set of very complicated electronic control system. Taking place the conventional dry pump unit, this pump can used in many hi-tech area such as semiconductor industry where oil-free high vacuum is needed. This paper introduces two types of dry pump, including their structures and performances. Some key points related to the development of the pump are intensely discussed as well.

A Reliable High Vacuum Gauge and Control System

1946 ◽  
Vol 17 (4) ◽  
pp. 125-129 ◽  
Author(s):  
Robert G. Picard ◽  
Perry C. Smith ◽  
Samuel M. Zollers
Keyword(s):  
Control System ◽  
High Vacuum ◽  
Vacuum Gauge ◽  
And Control

Development of a control system for compression and expansion cycles of critical valve for high vacuum systems

2016 ◽  
Vol 112 ◽  
pp. 735-741
Author(s):  
Jyoti Agarwal ◽  
H. Sharma ◽  
Haresh Patel ◽  
R. Gangradey ◽  
Vrushabh Lambade
Keyword(s):  
Control System ◽  
High Vacuum ◽  
Compression And Expansion ◽  
Vacuum Systems

scholarly journals Intuitive human interface to a scanning tunnelling microscope: observation of parity oscillations for a single atomic chain

2019 ◽  
Vol 10 ◽  
pp. 337-348
Author(s):  
Sumit Tewari ◽  
Jacob Bakermans ◽  
Christian Wagner ◽  
Federica Galli ◽  
Jan M van Ruitenbeek
Keyword(s):  
Control System ◽  
Real Time ◽  
Motion Control ◽  
High Vacuum ◽  
Point Contact ◽  
Control Individual ◽  
Scanning Tunnelling Microscope ◽  
Motion Control System ◽  
Scanning Tunnelling ◽  
Atomic Manipulation

A new way to control individual molecules and monoatomic chains is devised by preparing a human–machine augmented system in which the operator and the machine are connected by a real-time simulation. Here, a 3D motion control system is integrated with an ultra-high vacuum (UHV) low-temperature scanning tunnelling microscope (STM). Moreover, we coupled a real-time molecular dynamics (MD) simulation to the motion control system that provides a continuous visual feedback to the operator during atomic manipulation. This allows the operator to become a part of the experiment and to make any adaptable tip trajectory that could be useful for atomic manipulation in three dimensions. The strength of this system is demonstrated by preparing and lifting a monoatomic chain of gold atoms from a Au(111) surface in a well-controlled manner. We have demonstrated the existence of Fabry–Pérot-type electronic oscillations in such a monoatomic chain of gold atoms and determined its phase, which was difficult to ascertain previously. We also show here a new geometric procedure to infer the adatom positions and therefore information about the substrate atoms, which are not easily visible on clean metallic surfaces such as gold. This method enables a new controlled atom manipulation technique, which we will refer to as point contact pushing (PCP) technique.

Replication of Wet Objects and Cells

1974 ◽  
Vol 32 ◽  
pp. 102-103
Author(s):  
S. Basu ◽  
D. F. Parsons
Keyword(s):  
Water Vapor Pressure ◽  
High Vacuum ◽  
Polystyrene Latex ◽  
Vacuum System ◽  
Saturated Water Vapor ◽  
Replication Method ◽  
New Methods ◽  
Saturated Water ◽  
Water Vapors ◽  
Intermediate Chamber

We are approaching the invasiveness of cancer cells from the studies of their wet surface morphology which should distinguish them from their normal counterparts. In this report attempts have been made to provide physical basis and background work to a wet replication method with a differentially pumped hydration chamber (Fig. 1) (1,2), to apply this knowledge for obtaining replica of some specimens of known features (e.g. polystyrene latex) and finally to realize more specific problems and to improvize new methods and instrumentation for their rectification. In principle, the evaporant molecules penetrate through a pair of apertures (250, 350μ), through water vapors and is, then, deposited on the specimen. An intermediate chamber between the apertures is pumped independently of the high vacuum system. The size of the apertures is sufficiently small so that full saturated water vapor pressure is maintained near the specimen.

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