TY - JOUR
T1 - Direct Quantification of Rapid and Efficient Single-Stroke Actuation by a Martensitic Transition in a Thermosalient Crystal
AU - Khalil, Abdullah
AU - Karothu, Durga Prasad
AU - Naumov, Pance
N1 - Funding Information:
This research work was sponsored in part by New York University Abu Dhabi and was partially carried out using the optical microscopy facility at the Core Technology Platform resources at New York University Abu Dhabi. We thank Dr. Liang Li for measuring the specific heat capacity of PHA crystals and Dr. Ejaz Ahmed for his help with measurement of the elastic modulus.
Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/2/27
Y1 - 2019/2/27
N2 - Molecular dynamic crystals conveniently combine flexibility required for mechanical reconfiguration, strength for effective translation of elastic energy, and long-range order of mechanically coupled molecules for rapid conversion of disordered motion (heat) or photons (light) into ordered motion (work). By direct measurement of the actuation force generated by crystals of a thermosalient solid, here we describe the first direct quantification of the work performed and energy conversion that can be accomplished by using dynamic crystals as supramolecular actuators. Upon reversible α-to-γ phase transition, crystals of (phenylazophenyl)palladium hexafluoroacetylacetonate of submillimeter to millimeter size exert forces in the range of 1-100 mN upon longitudinal and lateral expansion. This work translates to a volumetric power density of about 1-3 MW m
-3 and efficiency comparable to the existing multicomponent actuators.
AB - Molecular dynamic crystals conveniently combine flexibility required for mechanical reconfiguration, strength for effective translation of elastic energy, and long-range order of mechanically coupled molecules for rapid conversion of disordered motion (heat) or photons (light) into ordered motion (work). By direct measurement of the actuation force generated by crystals of a thermosalient solid, here we describe the first direct quantification of the work performed and energy conversion that can be accomplished by using dynamic crystals as supramolecular actuators. Upon reversible α-to-γ phase transition, crystals of (phenylazophenyl)palladium hexafluoroacetylacetonate of submillimeter to millimeter size exert forces in the range of 1-100 mN upon longitudinal and lateral expansion. This work translates to a volumetric power density of about 1-3 MW m
-3 and efficiency comparable to the existing multicomponent actuators.
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U2 - 10.1021/jacs.8b12752
DO - 10.1021/jacs.8b12752
M3 - Article
C2 - 30742418
AN - SCOPUS:85061916035
SN - 0002-7863
VL - 141
SP - 3371
EP - 3375
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 8
ER -