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- W4255149513 abstract "A concept for a miniature, solid-state gas compressor is examined. The device operates by the phased activation of voltage-driven, electrostrictive ceramic blocks along a compression channel wherein a confined elastomer provides a motion-amplifying medium for peristaltically closing the compression channel. The device is also self-valving. Model estimates based on the nonlinear electromechanical parameters for paraelectric BaTiO3 suggest that a small (∼5×5×9-cm3), lightweight (∼1-kg) device would supply ∼0.3 cm3 per cycle at a compression ratio of 25:1 employing modest electric fields (∼20 kV/cm). At 500 Hz this corresponds to 38 mW of ideal Joule–Thompson refrigeration at 4.2 K using He gas. The efficiency of the device is estimated to be ∼85% (not including the power supply). A three-cell mechanical simulator of the concept was built and tested, and it was demonstrated that compression and self-valving can be achieved by peristaltically extruding an elastomer against a gas channel. An electronic power supply to drive the electrostrictive ceramics was designed, and a three-cell supply was built and tested which demonstrated that voltages up to 150 V could be switched at frequencies up to 10 kHz using small, inexpensive components. A critique of practical considerations is given, and it is concluded that the concept is feasible but additional research is required in elastomeric materials and in fabricating relatively large ceramic capacitors (∼2×2×1 cm3). Currently available electrostrictive actuators are inadequate." @default.
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- W4255149513 date "1987-08-01" @default.
- W4255149513 modified "2023-10-18" @default.
- W4255149513 title "Miniature, solid‐state gas compressor" @default.
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- W4255149513 doi "https://doi.org/10.1063/1.1139385" @default.
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