Fast-printed laser-induced-graphene pattern enabling directional thermal manipulation

Thermal metamaterials have recently attracted extensive attention for capable of manipulating heat flux, which makes it a great application potential in the field of electronic devices. However, developing a thermal manipulation device with facilely fabrication remains challenging as according to the theory of transformation thermotics, it not only needs to judiciously design and precisely distribute multiple materials with distinct thermal conductivity (k), but also should strictly match the background material. Herein, a facile fast-printed UV laser process is proposed to fabricate high-resolution laser induced graphene (LIG) patterns with controllable thermal conductivity enabling directional thermal manipulation—two types of thermal meta-devices, thermal cloak and concentrator. Effective anisotropic thermal conductivities are achieved by alternately assembling multilayer LIG films with polyimide (PI) layers. To obtain the optimal design of the LIG based meta-devices, the effects of k of the LIG, width ratio r, the number of layers n, and the overall size on thermal manipulation are theoretically simulated. The film thickness and k of LIG under different laser parameters were explored, and it was found that the film with a suitable laser power and a smaller thickness expansion can achieve a higher k. Besides, the thermal profiles of LIG-based meta-devices are experimentally demonstrated with varying laser powers and scanning speeds. The experiment result shows that the LIG-based multilayer cloak and bilayer cloak exhibit temperature gradients as low as 0.18 and 0.169 K/mm at the center of cloaks, with k of 8.96 and 13.05 W m−1 K−1, respectively. Additionally, a method of sputtering a layer of Cu film on the surface of the LIG based thermal concentrator to improve its thermal conductivity has also been evaluated. More importantly, LIG films feature with a thermal conductivity tunable, high-resolution, cost-effective, rapidly and facilely fabrication method. The fast-printed LIG periodic multilayered structures construct a new thermal metamaterial that provides a viable approach to the thermal manipulation in electronic devices. Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Hou, Maoxiang [verfasserIn] Bu, Yixuan [verfasserIn] Chen, Yun [verfasserIn] Guo, Yuanhui [verfasserIn] Wen, Guanhai [verfasserIn] Chen, Xin [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	Laser-induced graphene thermal metamaterial thermal conductivity

Übergeordnetes Werk:	Enthalten in: International journal of heat and mass transfer - Amsterdam [u.a.] : Elsevier, 1960, 197
Übergeordnetes Werk:	volume:197

DOI / URN:	10.1016/j.ijheatmasstransfer.2022.123303

Katalog-ID:	ELV008411557

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520			\|a Thermal metamaterials have recently attracted extensive attention for capable of manipulating heat flux, which makes it a great application potential in the field of electronic devices. However, developing a thermal manipulation device with facilely fabrication remains challenging as according to the theory of transformation thermotics, it not only needs to judiciously design and precisely distribute multiple materials with distinct thermal conductivity (k), but also should strictly match the background material. Herein, a facile fast-printed UV laser process is proposed to fabricate high-resolution laser induced graphene (LIG) patterns with controllable thermal conductivity enabling directional thermal manipulation—two types of thermal meta-devices, thermal cloak and concentrator. Effective anisotropic thermal conductivities are achieved by alternately assembling multilayer LIG films with polyimide (PI) layers. To obtain the optimal design of the LIG based meta-devices, the effects of k of the LIG, width ratio r, the number of layers n, and the overall size on thermal manipulation are theoretically simulated. The film thickness and k of LIG under different laser parameters were explored, and it was found that the film with a suitable laser power and a smaller thickness expansion can achieve a higher k. Besides, the thermal profiles of LIG-based meta-devices are experimentally demonstrated with varying laser powers and scanning speeds. The experiment result shows that the LIG-based multilayer cloak and bilayer cloak exhibit temperature gradients as low as 0.18 and 0.169 K/mm at the center of cloaks, with k of 8.96 and 13.05 W m−1 K−1, respectively. Additionally, a method of sputtering a layer of Cu film on the surface of the LIG based thermal concentrator to improve its thermal conductivity has also been evaluated. More importantly, LIG films feature with a thermal conductivity tunable, high-resolution, cost-effective, rapidly and facilely fabrication method. The fast-printed LIG periodic multilayered structures construct a new thermal metamaterial that provides a viable approach to the thermal manipulation in electronic devices.
650		4	\|a Laser-induced graphene
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700	1		\|a Bu, Yixuan \|e verfasserin \|4 aut
700	1		\|a Chen, Yun \|e verfasserin \|4 aut
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700	1		\|a Wen, Guanhai \|e verfasserin \|0 (orcid)0000-0001-8781-0273 \|4 aut
700	1		\|a Chen, Xin \|e verfasserin \|4 aut
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936	b	k	\|a 50.38 \|j Technische Thermodynamik
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publishDate	2022
allfields	10.1016/j.ijheatmasstransfer.2022.123303 doi (DE-627)ELV008411557 (ELSEVIER)S0017-9310(22)00773-6 DE-627 ger DE-627 rda eng 620 DE-600 50.38 bkl Hou, Maoxiang verfasserin (orcid)0000-0002-5472-0164 aut Fast-printed laser-induced-graphene pattern enabling directional thermal manipulation 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Thermal metamaterials have recently attracted extensive attention for capable of manipulating heat flux, which makes it a great application potential in the field of electronic devices. However, developing a thermal manipulation device with facilely fabrication remains challenging as according to the theory of transformation thermotics, it not only needs to judiciously design and precisely distribute multiple materials with distinct thermal conductivity (k), but also should strictly match the background material. Herein, a facile fast-printed UV laser process is proposed to fabricate high-resolution laser induced graphene (LIG) patterns with controllable thermal conductivity enabling directional thermal manipulation—two types of thermal meta-devices, thermal cloak and concentrator. Effective anisotropic thermal conductivities are achieved by alternately assembling multilayer LIG films with polyimide (PI) layers. To obtain the optimal design of the LIG based meta-devices, the effects of k of the LIG, width ratio r, the number of layers n, and the overall size on thermal manipulation are theoretically simulated. The film thickness and k of LIG under different laser parameters were explored, and it was found that the film with a suitable laser power and a smaller thickness expansion can achieve a higher k. Besides, the thermal profiles of LIG-based meta-devices are experimentally demonstrated with varying laser powers and scanning speeds. The experiment result shows that the LIG-based multilayer cloak and bilayer cloak exhibit temperature gradients as low as 0.18 and 0.169 K/mm at the center of cloaks, with k of 8.96 and 13.05 W m−1 K−1, respectively. Additionally, a method of sputtering a layer of Cu film on the surface of the LIG based thermal concentrator to improve its thermal conductivity has also been evaluated. More importantly, LIG films feature with a thermal conductivity tunable, high-resolution, cost-effective, rapidly and facilely fabrication method. The fast-printed LIG periodic multilayered structures construct a new thermal metamaterial that provides a viable approach to the thermal manipulation in electronic devices. Laser-induced graphene thermal metamaterial thermal conductivity Bu, Yixuan verfasserin aut Chen, Yun verfasserin aut Guo, Yuanhui verfasserin aut Wen, Guanhai verfasserin (orcid)0000-0001-8781-0273 aut Chen, Xin verfasserin aut Enthalten in International journal of heat and mass transfer Amsterdam [u.a.] : Elsevier, 1960 197 Online-Ressource (DE-627)320505081 (DE-600)2012726-1 (DE-576)096806575 1879-2189 nnns volume:197 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.38 Technische Thermodynamik AR 197
spelling	10.1016/j.ijheatmasstransfer.2022.123303 doi (DE-627)ELV008411557 (ELSEVIER)S0017-9310(22)00773-6 DE-627 ger DE-627 rda eng 620 DE-600 50.38 bkl Hou, Maoxiang verfasserin (orcid)0000-0002-5472-0164 aut Fast-printed laser-induced-graphene pattern enabling directional thermal manipulation 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Thermal metamaterials have recently attracted extensive attention for capable of manipulating heat flux, which makes it a great application potential in the field of electronic devices. However, developing a thermal manipulation device with facilely fabrication remains challenging as according to the theory of transformation thermotics, it not only needs to judiciously design and precisely distribute multiple materials with distinct thermal conductivity (k), but also should strictly match the background material. Herein, a facile fast-printed UV laser process is proposed to fabricate high-resolution laser induced graphene (LIG) patterns with controllable thermal conductivity enabling directional thermal manipulation—two types of thermal meta-devices, thermal cloak and concentrator. Effective anisotropic thermal conductivities are achieved by alternately assembling multilayer LIG films with polyimide (PI) layers. To obtain the optimal design of the LIG based meta-devices, the effects of k of the LIG, width ratio r, the number of layers n, and the overall size on thermal manipulation are theoretically simulated. The film thickness and k of LIG under different laser parameters were explored, and it was found that the film with a suitable laser power and a smaller thickness expansion can achieve a higher k. Besides, the thermal profiles of LIG-based meta-devices are experimentally demonstrated with varying laser powers and scanning speeds. The experiment result shows that the LIG-based multilayer cloak and bilayer cloak exhibit temperature gradients as low as 0.18 and 0.169 K/mm at the center of cloaks, with k of 8.96 and 13.05 W m−1 K−1, respectively. Additionally, a method of sputtering a layer of Cu film on the surface of the LIG based thermal concentrator to improve its thermal conductivity has also been evaluated. More importantly, LIG films feature with a thermal conductivity tunable, high-resolution, cost-effective, rapidly and facilely fabrication method. The fast-printed LIG periodic multilayered structures construct a new thermal metamaterial that provides a viable approach to the thermal manipulation in electronic devices. Laser-induced graphene thermal metamaterial thermal conductivity Bu, Yixuan verfasserin aut Chen, Yun verfasserin aut Guo, Yuanhui verfasserin aut Wen, Guanhai verfasserin (orcid)0000-0001-8781-0273 aut Chen, Xin verfasserin aut Enthalten in International journal of heat and mass transfer Amsterdam [u.a.] : Elsevier, 1960 197 Online-Ressource (DE-627)320505081 (DE-600)2012726-1 (DE-576)096806575 1879-2189 nnns volume:197 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.38 Technische Thermodynamik AR 197
allfields_unstemmed	10.1016/j.ijheatmasstransfer.2022.123303 doi (DE-627)ELV008411557 (ELSEVIER)S0017-9310(22)00773-6 DE-627 ger DE-627 rda eng 620 DE-600 50.38 bkl Hou, Maoxiang verfasserin (orcid)0000-0002-5472-0164 aut Fast-printed laser-induced-graphene pattern enabling directional thermal manipulation 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Thermal metamaterials have recently attracted extensive attention for capable of manipulating heat flux, which makes it a great application potential in the field of electronic devices. However, developing a thermal manipulation device with facilely fabrication remains challenging as according to the theory of transformation thermotics, it not only needs to judiciously design and precisely distribute multiple materials with distinct thermal conductivity (k), but also should strictly match the background material. Herein, a facile fast-printed UV laser process is proposed to fabricate high-resolution laser induced graphene (LIG) patterns with controllable thermal conductivity enabling directional thermal manipulation—two types of thermal meta-devices, thermal cloak and concentrator. Effective anisotropic thermal conductivities are achieved by alternately assembling multilayer LIG films with polyimide (PI) layers. To obtain the optimal design of the LIG based meta-devices, the effects of k of the LIG, width ratio r, the number of layers n, and the overall size on thermal manipulation are theoretically simulated. The film thickness and k of LIG under different laser parameters were explored, and it was found that the film with a suitable laser power and a smaller thickness expansion can achieve a higher k. Besides, the thermal profiles of LIG-based meta-devices are experimentally demonstrated with varying laser powers and scanning speeds. The experiment result shows that the LIG-based multilayer cloak and bilayer cloak exhibit temperature gradients as low as 0.18 and 0.169 K/mm at the center of cloaks, with k of 8.96 and 13.05 W m−1 K−1, respectively. Additionally, a method of sputtering a layer of Cu film on the surface of the LIG based thermal concentrator to improve its thermal conductivity has also been evaluated. More importantly, LIG films feature with a thermal conductivity tunable, high-resolution, cost-effective, rapidly and facilely fabrication method. The fast-printed LIG periodic multilayered structures construct a new thermal metamaterial that provides a viable approach to the thermal manipulation in electronic devices. Laser-induced graphene thermal metamaterial thermal conductivity Bu, Yixuan verfasserin aut Chen, Yun verfasserin aut Guo, Yuanhui verfasserin aut Wen, Guanhai verfasserin (orcid)0000-0001-8781-0273 aut Chen, Xin verfasserin aut Enthalten in International journal of heat and mass transfer Amsterdam [u.a.] : Elsevier, 1960 197 Online-Ressource (DE-627)320505081 (DE-600)2012726-1 (DE-576)096806575 1879-2189 nnns volume:197 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.38 Technische Thermodynamik AR 197
allfieldsGer	10.1016/j.ijheatmasstransfer.2022.123303 doi (DE-627)ELV008411557 (ELSEVIER)S0017-9310(22)00773-6 DE-627 ger DE-627 rda eng 620 DE-600 50.38 bkl Hou, Maoxiang verfasserin (orcid)0000-0002-5472-0164 aut Fast-printed laser-induced-graphene pattern enabling directional thermal manipulation 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Thermal metamaterials have recently attracted extensive attention for capable of manipulating heat flux, which makes it a great application potential in the field of electronic devices. However, developing a thermal manipulation device with facilely fabrication remains challenging as according to the theory of transformation thermotics, it not only needs to judiciously design and precisely distribute multiple materials with distinct thermal conductivity (k), but also should strictly match the background material. Herein, a facile fast-printed UV laser process is proposed to fabricate high-resolution laser induced graphene (LIG) patterns with controllable thermal conductivity enabling directional thermal manipulation—two types of thermal meta-devices, thermal cloak and concentrator. Effective anisotropic thermal conductivities are achieved by alternately assembling multilayer LIG films with polyimide (PI) layers. To obtain the optimal design of the LIG based meta-devices, the effects of k of the LIG, width ratio r, the number of layers n, and the overall size on thermal manipulation are theoretically simulated. The film thickness and k of LIG under different laser parameters were explored, and it was found that the film with a suitable laser power and a smaller thickness expansion can achieve a higher k. Besides, the thermal profiles of LIG-based meta-devices are experimentally demonstrated with varying laser powers and scanning speeds. The experiment result shows that the LIG-based multilayer cloak and bilayer cloak exhibit temperature gradients as low as 0.18 and 0.169 K/mm at the center of cloaks, with k of 8.96 and 13.05 W m−1 K−1, respectively. Additionally, a method of sputtering a layer of Cu film on the surface of the LIG based thermal concentrator to improve its thermal conductivity has also been evaluated. More importantly, LIG films feature with a thermal conductivity tunable, high-resolution, cost-effective, rapidly and facilely fabrication method. The fast-printed LIG periodic multilayered structures construct a new thermal metamaterial that provides a viable approach to the thermal manipulation in electronic devices. Laser-induced graphene thermal metamaterial thermal conductivity Bu, Yixuan verfasserin aut Chen, Yun verfasserin aut Guo, Yuanhui verfasserin aut Wen, Guanhai verfasserin (orcid)0000-0001-8781-0273 aut Chen, Xin verfasserin aut Enthalten in International journal of heat and mass transfer Amsterdam [u.a.] : Elsevier, 1960 197 Online-Ressource (DE-627)320505081 (DE-600)2012726-1 (DE-576)096806575 1879-2189 nnns volume:197 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.38 Technische Thermodynamik AR 197
allfieldsSound	10.1016/j.ijheatmasstransfer.2022.123303 doi (DE-627)ELV008411557 (ELSEVIER)S0017-9310(22)00773-6 DE-627 ger DE-627 rda eng 620 DE-600 50.38 bkl Hou, Maoxiang verfasserin (orcid)0000-0002-5472-0164 aut Fast-printed laser-induced-graphene pattern enabling directional thermal manipulation 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Thermal metamaterials have recently attracted extensive attention for capable of manipulating heat flux, which makes it a great application potential in the field of electronic devices. However, developing a thermal manipulation device with facilely fabrication remains challenging as according to the theory of transformation thermotics, it not only needs to judiciously design and precisely distribute multiple materials with distinct thermal conductivity (k), but also should strictly match the background material. Herein, a facile fast-printed UV laser process is proposed to fabricate high-resolution laser induced graphene (LIG) patterns with controllable thermal conductivity enabling directional thermal manipulation—two types of thermal meta-devices, thermal cloak and concentrator. Effective anisotropic thermal conductivities are achieved by alternately assembling multilayer LIG films with polyimide (PI) layers. To obtain the optimal design of the LIG based meta-devices, the effects of k of the LIG, width ratio r, the number of layers n, and the overall size on thermal manipulation are theoretically simulated. The film thickness and k of LIG under different laser parameters were explored, and it was found that the film with a suitable laser power and a smaller thickness expansion can achieve a higher k. Besides, the thermal profiles of LIG-based meta-devices are experimentally demonstrated with varying laser powers and scanning speeds. The experiment result shows that the LIG-based multilayer cloak and bilayer cloak exhibit temperature gradients as low as 0.18 and 0.169 K/mm at the center of cloaks, with k of 8.96 and 13.05 W m−1 K−1, respectively. Additionally, a method of sputtering a layer of Cu film on the surface of the LIG based thermal concentrator to improve its thermal conductivity has also been evaluated. More importantly, LIG films feature with a thermal conductivity tunable, high-resolution, cost-effective, rapidly and facilely fabrication method. The fast-printed LIG periodic multilayered structures construct a new thermal metamaterial that provides a viable approach to the thermal manipulation in electronic devices. Laser-induced graphene thermal metamaterial thermal conductivity Bu, Yixuan verfasserin aut Chen, Yun verfasserin aut Guo, Yuanhui verfasserin aut Wen, Guanhai verfasserin (orcid)0000-0001-8781-0273 aut Chen, Xin verfasserin aut Enthalten in International journal of heat and mass transfer Amsterdam [u.a.] : Elsevier, 1960 197 Online-Ressource (DE-627)320505081 (DE-600)2012726-1 (DE-576)096806575 1879-2189 nnns volume:197 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.38 Technische Thermodynamik AR 197
language	English
source	Enthalten in International journal of heat and mass transfer 197 volume:197
sourceStr	Enthalten in International journal of heat and mass transfer 197 volume:197
format_phy_str_mv	Article
bklname	Technische Thermodynamik
institution	findex.gbv.de
topic_facet	Laser-induced graphene thermal metamaterial thermal conductivity
dewey-raw	620
isfreeaccess_bool	false
container_title	International journal of heat and mass transfer
authorswithroles_txt_mv	Hou, Maoxiang @@aut@@ Bu, Yixuan @@aut@@ Chen, Yun @@aut@@ Guo, Yuanhui @@aut@@ Wen, Guanhai @@aut@@ Chen, Xin @@aut@@
publishDateDaySort_date	2022-01-01T00:00:00Z
hierarchy_top_id	320505081
dewey-sort	3620
id	ELV008411557
language_de	englisch
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spellingShingle	Hou, Maoxiang ddc 620 bkl 50.38 misc Laser-induced graphene misc thermal metamaterial misc thermal conductivity Fast-printed laser-induced-graphene pattern enabling directional thermal manipulation
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topic_title	620 DE-600 50.38 bkl Fast-printed laser-induced-graphene pattern enabling directional thermal manipulation Laser-induced graphene thermal metamaterial thermal conductivity
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title	Fast-printed laser-induced-graphene pattern enabling directional thermal manipulation
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title_full	Fast-printed laser-induced-graphene pattern enabling directional thermal manipulation
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title_sort	fast-printed laser-induced-graphene pattern enabling directional thermal manipulation
title_auth	Fast-printed laser-induced-graphene pattern enabling directional thermal manipulation
abstract	Thermal metamaterials have recently attracted extensive attention for capable of manipulating heat flux, which makes it a great application potential in the field of electronic devices. However, developing a thermal manipulation device with facilely fabrication remains challenging as according to the theory of transformation thermotics, it not only needs to judiciously design and precisely distribute multiple materials with distinct thermal conductivity (k), but also should strictly match the background material. Herein, a facile fast-printed UV laser process is proposed to fabricate high-resolution laser induced graphene (LIG) patterns with controllable thermal conductivity enabling directional thermal manipulation—two types of thermal meta-devices, thermal cloak and concentrator. Effective anisotropic thermal conductivities are achieved by alternately assembling multilayer LIG films with polyimide (PI) layers. To obtain the optimal design of the LIG based meta-devices, the effects of k of the LIG, width ratio r, the number of layers n, and the overall size on thermal manipulation are theoretically simulated. The film thickness and k of LIG under different laser parameters were explored, and it was found that the film with a suitable laser power and a smaller thickness expansion can achieve a higher k. Besides, the thermal profiles of LIG-based meta-devices are experimentally demonstrated with varying laser powers and scanning speeds. The experiment result shows that the LIG-based multilayer cloak and bilayer cloak exhibit temperature gradients as low as 0.18 and 0.169 K/mm at the center of cloaks, with k of 8.96 and 13.05 W m−1 K−1, respectively. Additionally, a method of sputtering a layer of Cu film on the surface of the LIG based thermal concentrator to improve its thermal conductivity has also been evaluated. More importantly, LIG films feature with a thermal conductivity tunable, high-resolution, cost-effective, rapidly and facilely fabrication method. The fast-printed LIG periodic multilayered structures construct a new thermal metamaterial that provides a viable approach to the thermal manipulation in electronic devices.
abstractGer	Thermal metamaterials have recently attracted extensive attention for capable of manipulating heat flux, which makes it a great application potential in the field of electronic devices. However, developing a thermal manipulation device with facilely fabrication remains challenging as according to the theory of transformation thermotics, it not only needs to judiciously design and precisely distribute multiple materials with distinct thermal conductivity (k), but also should strictly match the background material. Herein, a facile fast-printed UV laser process is proposed to fabricate high-resolution laser induced graphene (LIG) patterns with controllable thermal conductivity enabling directional thermal manipulation—two types of thermal meta-devices, thermal cloak and concentrator. Effective anisotropic thermal conductivities are achieved by alternately assembling multilayer LIG films with polyimide (PI) layers. To obtain the optimal design of the LIG based meta-devices, the effects of k of the LIG, width ratio r, the number of layers n, and the overall size on thermal manipulation are theoretically simulated. The film thickness and k of LIG under different laser parameters were explored, and it was found that the film with a suitable laser power and a smaller thickness expansion can achieve a higher k. Besides, the thermal profiles of LIG-based meta-devices are experimentally demonstrated with varying laser powers and scanning speeds. The experiment result shows that the LIG-based multilayer cloak and bilayer cloak exhibit temperature gradients as low as 0.18 and 0.169 K/mm at the center of cloaks, with k of 8.96 and 13.05 W m−1 K−1, respectively. Additionally, a method of sputtering a layer of Cu film on the surface of the LIG based thermal concentrator to improve its thermal conductivity has also been evaluated. More importantly, LIG films feature with a thermal conductivity tunable, high-resolution, cost-effective, rapidly and facilely fabrication method. The fast-printed LIG periodic multilayered structures construct a new thermal metamaterial that provides a viable approach to the thermal manipulation in electronic devices.
abstract_unstemmed	Thermal metamaterials have recently attracted extensive attention for capable of manipulating heat flux, which makes it a great application potential in the field of electronic devices. However, developing a thermal manipulation device with facilely fabrication remains challenging as according to the theory of transformation thermotics, it not only needs to judiciously design and precisely distribute multiple materials with distinct thermal conductivity (k), but also should strictly match the background material. Herein, a facile fast-printed UV laser process is proposed to fabricate high-resolution laser induced graphene (LIG) patterns with controllable thermal conductivity enabling directional thermal manipulation—two types of thermal meta-devices, thermal cloak and concentrator. Effective anisotropic thermal conductivities are achieved by alternately assembling multilayer LIG films with polyimide (PI) layers. To obtain the optimal design of the LIG based meta-devices, the effects of k of the LIG, width ratio r, the number of layers n, and the overall size on thermal manipulation are theoretically simulated. The film thickness and k of LIG under different laser parameters were explored, and it was found that the film with a suitable laser power and a smaller thickness expansion can achieve a higher k. Besides, the thermal profiles of LIG-based meta-devices are experimentally demonstrated with varying laser powers and scanning speeds. The experiment result shows that the LIG-based multilayer cloak and bilayer cloak exhibit temperature gradients as low as 0.18 and 0.169 K/mm at the center of cloaks, with k of 8.96 and 13.05 W m−1 K−1, respectively. Additionally, a method of sputtering a layer of Cu film on the surface of the LIG based thermal concentrator to improve its thermal conductivity has also been evaluated. More importantly, LIG films feature with a thermal conductivity tunable, high-resolution, cost-effective, rapidly and facilely fabrication method. The fast-printed LIG periodic multilayered structures construct a new thermal metamaterial that provides a viable approach to the thermal manipulation in electronic devices.
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title_short	Fast-printed laser-induced-graphene pattern enabling directional thermal manipulation
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author2	Bu, Yixuan Chen, Yun Guo, Yuanhui Wen, Guanhai Chen, Xin
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up_date	2024-07-06T19:36:40.466Z
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The film thickness and k of LIG under different laser parameters were explored, and it was found that the film with a suitable laser power and a smaller thickness expansion can achieve a higher k. Besides, the thermal profiles of LIG-based meta-devices are experimentally demonstrated with varying laser powers and scanning speeds. The experiment result shows that the LIG-based multilayer cloak and bilayer cloak exhibit temperature gradients as low as 0.18 and 0.169 K/mm at the center of cloaks, with k of 8.96 and 13.05 W m−1 K−1, respectively. Additionally, a method of sputtering a layer of Cu film on the surface of the LIG based thermal concentrator to improve its thermal conductivity has also been evaluated. More importantly, LIG films feature with a thermal conductivity tunable, high-resolution, cost-effective, rapidly and facilely fabrication method. 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Fast-printed laser-induced-graphene pattern enabling directional thermal manipulation

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