An innovative heat harvesting technology (HEATec) for above-Seebeck performance

Puscasu, O.; Monfray, S.; Savelli, G.; Maitre, Christophe; Pemeant, J. P.; Coronel, P.; Domanski, K.; Grabiec, P.; Ancey, P.; Cottinet, Pierre‐Jean; Guyomar, Daniel; Bottarel, V.; Ricotti, G.; Bimbaud, I.; Bœuf, F.; Gaillard, F.; Skotnicki, T.

doi:10.1109/iedm.2012.6479031

Cited by 9 publications

(13 citation statements)

References 4 publications

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“…• Thermal EH [14]: where power is proportional to the temperature gradient along the device, thus requiring usually big heat sinks to increase its performance.…”

Section: E Energy For Autonomous Systemsmentioning

confidence: 99%

NanoElectronics roadmap for Europe: From nanodevices and innovative materials to system integration

Ahopelto¹,

Ardila²,

Baldi³

et al. 2019

Solid-State Electronics

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The NEREID project ("NanoElectronics Roadmap for Europe: Identification and Dissemination") is dedicated to map the future of European Nanoelectronics. NEREID's objective is to develop a medium and long term roadmap for the European nanoelectronics industry, starting from the needs of applications to address societal challenges and leveraging the strengths of the European ecosystem. In addition, it will lead to an early benchmark/identification of promising novel nanoelectronic technologies, based on the advanced concepts developed by Research Centres and Universities, and an identification of bottlenecks all along the innovation (value) chain. Considering applications like Energy, Automotive, Medical/Life Science, Security, loT, Mobile Convergence and Digital Manufacturing the NEREID roadmap is about Advanced Logic and Connectivity, Functional Diversification (Smart Sensors, Smart Energy and Energy for Autonomous Systems), Beyond-CMOS, Heterogeneous Integration and System Design as well as Equipment, Materials and Manufacturing Science. This article gives an overview on the roadmap's structure and content.

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“…• Thermal EH [14]: where power is proportional to the temperature gradient along the device, thus requiring usually big heat sinks to increase its performance.…”

Section: E Energy For Autonomous Systemsmentioning

confidence: 99%

NanoElectronics roadmap for Europe: From nanodevices and innovative materials to system integration

Ahopelto¹,

Ardila²,

Baldi³

et al. 2019

Solid-State Electronics

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“…In this direction, bimetallic strip engines are being studied, which expand due to differences in coefficient of thermal expansion (CTE) using thermal fluctuations. [22][23][24][25][26] Bimetallic beam helps convert thermal to mechanical energy using thermal fluctuations to mechanical movements. [25] However, in the literature, most of the studies/experiments performed are based on…”

Section: Introductionmentioning

confidence: 99%

Exploiting the Potential of Pyroelectric–Piezoelectric Hybrid Devices for Low‐Grade Thermal Energy Harvesting

Gaur,

Saurabh,

Patel

2023

Energy Tech

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This study proposes a separate and combined (pyroelectric + piezoelectric) energy harvesting system using a bimetallic beam. Hybrid energy harvesting is achieved by waste thermal energy using thermal expansion mismatch of the bimetallic beam. In this regard, four types of design are proposed, along with various heating/cooling cycles. Auxetic layers in a bimetallic beam are used to enhance the power. The best‐performing design and heating/cooling cycle are considered for further power increment. Two models are simulated based on low (model C3) and high heat consumption (model C5). The load resistance, frequency, bimetallic beam and pyroelectric/piezoelectric layer thickness are varied and maximum power is obtained at 175 MΩ (C3), 75 MΩ (C5), 0.02 Hz (C3 and C5) and 0.4 mm (C3 and C5) as 20 μW (C3) and 40 μW(C5), respectively. The piezoelectric, pyroelectric and combined power variation is the effect of stress and temperature fluctuations on H‐PEH layer. Additionally, five well‐known higher pyroelectric/piezoelectric coefficient materials are studied and found that La‐NBT‐BT‐Ta gives the maximum power of 0.811 and 1.99 mW for combined (pyroelectric + piezoelectric) effect in low (C3) and high (C5) heat consumption model, respectively. The stress generated in both models is analyzed to look at practical feasibility.

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“…Energy harvesting using piezoelectric [ 1 , 2 , 3 , 4 , 5 , 6 ], thermal [ 7 , 8 , 9 ] or electrostatic [ 10 ] conversion is pursued as an alternative to batteries for the power supply of wireless sensor nodes. Nowadays, emerging sensor nodes have lower and lower consumptions and emerging energy harvesting systems are able to provide enough energy to power them.…”

Section: Introductionmentioning

confidence: 99%

“…This device is based on a two-step conversion mechanism: a thermo-mechanical conversion by a bimetallic strip followed by an electro-mechanical conversion thanks to a piezoelectric membrane placed on the bimetal. This configuration, first proposed by Skotnicki in [ 11 ], has been widely studied in the literature [ 1 , 2 , 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…After several optimization steps of the coupled piezoelectric and bimetallic strip heat engines, as shown in Figure 1 (including thermal optimization of the thermal gradient across the hot source and the cold surface, device architecture optimization from both mechanical and thermal points of views and also pertinent piezoelectric material choices), the output power was increased from 1 µW [ 1 ] (generated by the first prototype developed for the proof of concept) to 30 µW available on the piezoelectric capacitor for a hot source of 84 °C and a 3 °C hysteretic bimetal (67 °C/70 °C) [ 12 ]. This corresponds to 5 µW of usable power when employing a standard electronic circuit composed of a diode bridge and a storage capacitor.…”

Section: Introductionmentioning

confidence: 99%

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Coupling of PZT Thin Films with Bimetallic Strip Heat Engines for Thermal Energy Harvesting

Boughaleb

Arnaud

Guiffard

et al. 2018

Sensors

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A thermal energy harvester based on a double transduction mechanism and which converts thermal energy into electrical energy by means of piezoelectric membranes and bimetals, has previously been developed and widely presented in the literature In such a device, the thermo-mechanical conversion is ensured by a bimetal whereas the electro-mechanical conversion is generated by a piezoelectric ceramic. However, it has been shown that only 19% of the mechanical energy delivered by the bimetal during its snap is converted into electrical energy. To extract more energy from the bimetallic strip and to increase the transduction efficiency, a new way to couple piezoelectric materials with bimetals has thus been explored through direct deposition of piezoelectric layers on bimetals. This paper consequently presents an alternative way to harvest heat, based on piezoelectric bimetallic strip heat engines and presents a proof of concept of such a system. In this light, different PZT (Lead zirconate titanate) thin films were synthesized directly on aluminium foils and were attached to the bimetals using conductive epoxy. The fabrication process of each sample is presented herein as well as the experimental tests carried out on the devices. Throughout this study, different thicknesses of the piezoelectric layers and substrates were tested to determine the most powerful configuration. Finally, the study also gives some guidelines for future improvements of piezoelectric bimetals.

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An innovative heat harvesting technology (HEATec) for above-Seebeck performance

Cited by 9 publications

References 4 publications

NanoElectronics roadmap for Europe: From nanodevices and innovative materials to system integration

NanoElectronics roadmap for Europe: From nanodevices and innovative materials to system integration

Exploiting the Potential of Pyroelectric–Piezoelectric Hybrid Devices for Low‐Grade Thermal Energy Harvesting

Coupling of PZT Thin Films with Bimetallic Strip Heat Engines for Thermal Energy Harvesting

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