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Quantum shape effects and novel thermodynamic behaviors at nanoscale
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory. Istanbul Tech Univ, Energy Inst, Nano Energy Res Grp, Istanbul, Turkey.ORCID iD: 0000-0002-1130-0936
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory. Istanbul Tech Univ, Energy Inst, Nano Energy Res Grp, Istanbul, Turkey.ORCID iD: 0000-0002-7431-5115
2019 (English)In: Physics Letters A, ISSN 0375-9601, E-ISSN 1873-2429, Vol. 383, no 7, p. 655-665Article in journal (Refereed) Published
Abstract [en]

Thermodynamic properties of confined systems depend on sizes of the confinement domain due to quantum nature of particles. Here we show that shape also enters as a control parameter on thermodynamic state functions. By considering specially designed confinement domains, we demonstrate how shape effects alone modify Helmholtz free energy, entropy and internal energy of a confined system. We propose an overlapped quantum boundary layer method to analytically predict quantum shape effects without even solving Schrödinger equation or invoking any other mathematical tools. Thereby we reduce a thermodynamic problem into a simple geometric one and reveal the profound link between geometry and thermodynamics. We report also a torque due to quantum shape effects. Furthermore, we introduce isoformal, shape preserving, process which opens the possibility of a new generation of thermodynamic cycles operating at nanoscale with unique features.

Place, publisher, year, edition, pages
2019. Vol. 383, no 7, p. 655-665
National Category
Condensed Matter Physics
Research subject
Physics with spec. in Atomic, Molecular and Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-379501DOI: 10.1016/j.physleta.2019.01.009ISI: 000459519300011OAI: oai:DiVA.org:uu-379501DiVA, id: diva2:1296795
Available from: 2019-03-18 Created: 2019-03-18 Last updated: 2019-03-25Bibliographically approved

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Aydin, AlhunSisman, Altug

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