Improved Electrical Leads for High Pressure Systems

Terry, R.; Ruoff, Arthur L.

doi:10.1063/1.1685932

Cited by 14 publications

(4 citation statements)

References 2 publications

(1 reference statement)

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“…24 However, upon further review of the literature available, it becomes apparent that the method of using heat shrinkable plastic tubing is the most feasible. 25 This type of cone insulation has proven to be effective in both gas and liquid systems, and is capable of withstanding pressures up to 10 kbar.…”

Section: Electrical Plug Assemblymentioning

confidence: 99%

Shape memory alloy activated high-pressure optical cell for biophysical studies

Zhou

Koulas

Chong

2000

Review of Scientific Instruments

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Articles you may be interested inDesign of a high-pressure circulating pump for viscous liquids Rev. Sci. Instrum. 80, 075104 (2009); 10.1063/1.3155450 Flow cell for in situ optical microscopy in water at high temperatures and pressures up to supercritical state Rev. Sci. Instrum. 73, 3938 (2002); 10.1063/1.1510550High-pressure autoclave for multipurpose nuclear magnetic resonance measurements up to 10 MPa Rev.The high-pressure optical cell ͑HPOC͒ originally designed by A. A. Paladini and G. Weber ͓Rev. Sci. Instrum. 52, 419 ͑1981͔͒ has been widely used in biophysical research. However, the original HPOC only allows for the observations of optical properties of single samples, thus limiting the data which researchers can obtain. The objective of this article is to demonstrate a new HPOC design, which enables researchers to introduce an additional component to the original sample for optical observation of biochemical reactions in real time, while all the components are under pressure. The core of this new design is the introduction of the shape memory alloy activated stopper/mixing mechanism, which separates different biological samples until the experimenter is ready to mix them. A urethane stopper separates the two samples, which are sealed in a dual chamber cuvette. The cuvette is suspended in the mid chamber, so that the pressure can be transmitted to both sides of the cuvette equally. Once an electric current is transmitted through the electrical plugs, the shape memory alloy is heated and moves the urethane stopper away from the neck of the cuvette. In addition, the shape memory alloy achieves a pumping action, which facilitates the mixing of the two samples. A multiple-chamber cuvette capable of mixing three components is also designed. Some preliminary feasibility testing has been done, and a stainless steel HPOC prototype has been built to validate the design.

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Section: Electrical Plug Assemblymentioning

confidence: 99%

Shape memory alloy activated high-pressure optical cell for biophysical studies

Zhou

Koulas

Chong

2000

Review of Scientific Instruments

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“…It has a sensitivity of better than 0.04 bar. The manganin wire in the two coils within the pressure vessel is passed directly through cone seals (Terry and Ruoff 1972) and connected to the outer two arms outside the vessel. All four arms are placed in a temperature-controlled environment held to within 1.0.01 "C.…”

Section: Manganin Pressure Semormentioning

confidence: 99%

Galvanomagnetic properties of a 2D electron layer in silicon under conditions of a quantized Hall resistance

Pudalov¹,

Semenchinskiǐ²

1985

Sov. Phys. Usp.

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This is a preliminary description of a new method of determining absolute pressure which is based on the simultaneous measurement of length and ultrasonic transit times. This method has been used to determine the transition pressure of pure mercury at 0 "C at 7571.2 1 6 bar. It is particularly advantageous to use for calibrating secondary gauges such as manganin gauges inasmuch as it gives a highly accurate measurement of nonlinearities in such secondary gauges. The gauge calibrated in the present study reaches a maximum deviation from linearity of -11.6 bar at a pressure midway between atmospheric pressure and the 0 "C mercury melting pressure.

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“…Scatter in their data introduced an error of +0.25 μΥ/k bar. Terry and Ruof 63 have described a convenient method for making plastic cone seals by heat shrink ing Kynar* or other plastic tubing. Their copper-constantan results are in excellent agreement with those of Bridgman and of Freud and La Mori over the common range of measurement.…”

Section: ) Copper-constantan Thermocouplesmentioning

confidence: 99%