37e41049a00932e9b13eb20b5fa5b036 pmc_10180188.pdf f30cfcabf63aff87d577e0a47df9e5339236ef9e pmc_10180188.pdf d7f8afef14da64772ea32eae1e563f38ed062040ff9c1d755a6ba0a2b7fb9736 pmc_10180188.pdf Title: Tunable Heat-Flux Rectification in Graded Nanowires in Non-Linear Guyer-Krumhansl Regime Subject: We study heat rectification in composition-graded nanowires, with nonlocal and nonlinear effects taken into account in a generalized Guyer-Krumhansl equation. Using a thermal conductivity dependent on composition and temperature, the heat equation is solved. Introducing a non-vanishing heat supply (as for instance, a lateral radiative heat supply), we explore the conditions under which either nonlocal or nonlinear effects or both contribute to heat rectification and how they may be controlled by means of the external radiative flux. The corresponding rectification coefficients are calculated as well, and the physical conditions under which the system becomes a thermal diode are pointed out. Keywords: heat rectification; graded materials; composition-dependent thermal conductivity;nonlinear Guyer-Krumhansl equation Author: Isabella Carlomagno, Vito Antonio Cimmelli and David Jou Creator: LaTeX with hyperref Producer: pdfTeX-1.40.21 CreationDate: Sun Apr 23 10:18:31 2023 CEST ModDate: Sun Apr 23 10:24:08 2023 CEST Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 14 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 491492 bytes Optimized: no PDF version: 1.7 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- LUYNBS+URWPalladioL-Bold Type 1 Custom yes yes no 10 0 ICWIZU+URWPalladioL-Roma Type 1 Custom yes yes no 15 0 QPYMXS+URWPalladioL-Ital Type 1 Custom yes yes no 19 0 JCTJJE+CMBSY10 Type 1 Builtin yes yes no 23 0 VUABVQ+CMMI10 Type 1 Builtin yes yes no 27 0 SOSTRQ+CMR10 Type 1 Builtin yes yes no 31 0 VKIPHC+CMSY10 Type 1 Builtin yes yes no 35 0 NPLVPL+TimesNewRomanPS-BoldItalicMT Type 1C WinAnsi yes yes no 53 0 BOJIZP+PazoMath-Italic Type 1 Builtin yes yes no 81 0 AHSKSO+CMEX10 Type 1 Builtin yes yes no 94 0 VSCMII+PazoMath-BoldItalic Type 1 Builtin yes yes no 110 0 BCDAFF+URWPalladioL-BoldItal Type 1 Custom yes yes no 114 0 BVTOFD+CMBX10 Type 1 Builtin yes yes no 118 0 QEENQN+Helvetica Type 1C WinAnsi yes yes no 125 0 PMZHOG+Helvetica Type 1C WinAnsi yes yes no 131 0 BBETNX+PazoMath Type 1 Builtin yes yes no 140 0 Jhove (Rel. 1.28.0, 2023-05-18) Date: 2024-02-02 02:34:54 CET RepresentationInformation: pmc_10180188.pdf ReportingModule: PDF-hul, Rel. 1.12.4 (2023-03-16) LastModified: 2023-09-08 02:19:13 CEST Size: 491492 Format: PDF Version: 1.7 Status: Well-Formed and valid SignatureMatches: PDF-hul MIMEtype: application/pdf PDFMetadata: Objects: 333 FreeObjects: 1 IncrementalUpdates: 0 DocumentCatalog: PageLayout: SinglePage PageMode: UseNone Outlines: Item: Title: Introduction Destination: section.1 Item: Title: Nonlocal and Nonlinear Heat Transport at Nanoscale Destination: section.2 Item: Title: The Physical Model Destination: section.3 Item: Title: Results and Discussion Destination: section.4 Item: Title: Conclusions Destination: section.5 Item: Title: Appendix A Destination: section.A. Item: Title: References Destination: table.caption.16 Info: Title: Tunable Heat-Flux Rectification in Graded Nanowires in Non-Linear Guyer-Krumhansl Regime Author: Isabella Carlomagno, Vito Antonio Cimmelli and David Jou Subject: We study heat rectification in composition-graded nanowires, with nonlocal and nonlinear effects taken into account in a generalized Guyer-Krumhansl equation. Using a thermal conductivity dependent on composition and temperature, the heat equation is solved. Introducing a non-vanishing heat supply (as for instance, a lateral radiative heat supply), we explore the conditions under which either nonlocal or nonlinear effects or both contribute to heat rectification and how they may be controlled by means of the external radiative flux. The corresponding rectification coefficients are calculated as well, and the physical conditions under which the system becomes a thermal diode are pointed out. 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