Solar Panel Deployment Using Shape Memory Alloy Actuator

Gasparetto, Victor E. L.; Kanevsky, Mila; Jiang, Xin

doi:10.2514/6.2021-1608

Cited by 1 publication

(1 citation statement)

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“…By its characteristics here presented, phase transition of lillianite qualifies itself as a specifically interesting shape-memory material. Further work (Costanza and Tata 2020), and (ii) photovoltaic panels, as shape-memory alloy springs that act as actuators by contracting with great strength and speed when heated and thus changing the position of the solar panel in accordance to the motion of the sun throughout the day (Gasparetto et al 2021;Degeratu et al 2021).…”

Section: Discussionmentioning

confidence: 99%

High-pressure single-crystal synchrotron X-ray diffraction study of lillianite

Cheng

Balić-Žunić

Collings

et al. 2022

American Mineralogist

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In the present paper, high pressure data from a synchrotron X-ray diffraction study on a lillianite (Pb3Bi2S6) single crystal up to approximately 21 GPa are presented.A phase transition from lillianite (Bbmm space group #63, LP lillianite) to the high-pressure form β-Pb3Bi2S6 (Pbnm space group, HP lillianite) was confirmed and bracketed between 4.90 and 4.92 GPa.The transition is reversible but of first-order with a hysteresis of ~2.8 GPa. The phase transition to β-Pb3Bi2S6 showed weak effects of pseudomerohedral twinning that disappeared upon decompression, testifying to a full recovery of the single crystal of lillianite. This makes lillianite an interesting shapememory material.With a bulk modulus K4.9 = 78(3) GPa and K' = 5.1(4), β-Pb3Bi2S6 is markedly less compressibile than lillianite [K0 = 44(2) GPa, K' = 7( 1)]. Compressional anisotropy increased markedly in β-Pb3Bi2S6 with compressibility along the b axis [M0b = 130(6) GPa and M'b = 19(3) in lillianite, M4.9b = 145( 4) GPa and This is the peer-reviewed, final accepted version for American Mineralogist, published by the Mineralogical Society of America.The published version is subject to change. Cite as Authors (Year) Title. American Mineralogist, in press.

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Section: Discussionmentioning

confidence: 99%