1
|
Cao Y, Zhang H, Chen N, Liu H, Feng Y, Wu X. A tungsten-based metamaterial emitter for solar thermophotovoltaic systems. Phys Chem Chem Phys 2024; 26:13909-13914. [PMID: 38666381 DOI: 10.1039/d4cp00210e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2024]
Abstract
Solar thermophotovoltaic systems are capable of showing efficient photoelectric conversion and are expected to surpass the Shockley-Queisser limit, owing to the spectrum-selective functionality of metamaterial selective emitters. Generally, metamaterial emitters are manufactured from multifarious materials, which also makes their manufacturing process complicated. Here, we propose a tungsten-only emitter composed of two rectangular bars with different widths and heights arranged in a cruciform structure, featuring a rectangular cavity at the top. Results from the simulations reveal that the emissivity of the metamaterial emitter exceeds 90% at the wavelength of 950-1590 nm and drops below 20% for wavelengths exceeding 2025 nm, which can effectively match GaSb photovoltaic cells. The outstanding emission performance is attributed to the coupling effect of surface plasmon resonance, cavity resonance and guided mode resonance, as evidenced by the analysis of electric and magnetic fields. We also explored the radiation spectrum in the 500-2500 K temperature range and found that it performed best at 1400 K. It is concluded that the emission performance is slightly affected by structural parameters and angles. This study presents a meaningful exploration of efficient solar utilization.
Collapse
Affiliation(s)
- Yuchun Cao
- School of Energy, Changzhou University, Changzhou, Jiangsu Province 213164, P. R. China.
| | - Heng Zhang
- School of Energy, Changzhou University, Changzhou, Jiangsu Province 213164, P. R. China.
| | - Ning Chen
- Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Haotuo Liu
- Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, China
| | - Yongtao Feng
- School of Energy, Changzhou University, Changzhou, Jiangsu Province 213164, P. R. China.
| | - Xiaohu Wu
- Thermal Science Research Center, Shandong Institute of Advanced Technology, Jinan 250100, China.
| |
Collapse
|
2
|
Kim H, Yoo YJ, Yun JH, Heo SY, Song YM, Yeo WH. Outdoor Worker Stress Monitoring Electronics with Nanofabric Radiative Cooler-Based Thermal Management. Adv Healthc Mater 2023; 12:e2301104. [PMID: 37548604 DOI: 10.1002/adhm.202301104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 07/18/2023] [Indexed: 08/08/2023]
Abstract
Severe stress endangers outdoor workers who are in an exceedingly hot workplace. Although recent studies quantify stress levels on the human skin, they still rely on rigid, bulky sensor modules, causing data loss from motion artifacts and limited field-deployability for continuous health monitoring. Moreover, no prior work shows a wearable device that can endure heat exposure while showing continuous monitoring of a subject's stress under realistic working environments. Herein, a soft, field-deployable, wearable bioelectronic system is introduced for detecting outdoor workers' stress levels with negligible motion artifacts and controllable thermal management. A nanofabric radiative cooler (NFRC) and miniaturized sensors with a nanomembrane soft electronic platform are integrated to measure stable electrodermal activities and temperature in hot outdoor conditions. The NFRC exhibits outstanding cooling performance in sub-ambient air with high solar reflectivity and high thermal emissivity. The integrated wearable device with all embedded electronic components and the NFRC shows a lower temperature (41.1%) in sub-ambient air than the NFRC-less device while capturing improved operation time (18.2%). In vivo human study of the bioelectronics with agricultural activities demonstrates the device's capability for portable, continuous, real-time health monitoring of outdoor workers with field deployability.
Collapse
Affiliation(s)
- Hojoong Kim
- George W. Woodruff School of Mechanical Engineering, College of Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- IEN Center for Human-Centric Interfaces and Engineering, Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Young Jin Yoo
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Joo Ho Yun
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Se-Yeon Heo
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Young Min Song
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
- Anti-Viral Research Center, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
- AI Graduate School, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Woon-Hong Yeo
- George W. Woodruff School of Mechanical Engineering, College of Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- IEN Center for Human-Centric Interfaces and Engineering, Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University School of Medicine, Atlanta, GA, 30332, USA
- Parker H. Petit Institute for Bioengineering and Biosciences, Institute for Materials, Neural Engineering Center, Institute for Robotics and Intelligent Machines, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| |
Collapse
|
3
|
Jeon SK, Kim JT, Kim MS, Kim IS, Park SJ, Jeong H, Lee GJ, Kim YJ. Scalable, Patternable Glass-Infiltrated Ceramic Radiative Coolers for Energy-Saving Architectural Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302701. [PMID: 37485641 PMCID: PMC10520670 DOI: 10.1002/advs.202302701] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/20/2023] [Indexed: 07/25/2023]
Abstract
A huge concern on global climate/energy crises has triggered intense development of radiative coolers (RCs), which are promising green-cooling technologies. The continuous efforts on RCs have fast-tracked notable energy-savings by minimizing solar absorption and maximizing thermal emission. Recently, in addition to spectral optimization, ceramic-based thermally insulative RCs are reported to improve thermoregulation by suppressing heat gain from the surroundings. However, a high temperature co-firing process of ceramic-based thick film inevitably results in a large mismatch of structural parameters between designed and fabricated components, thereby breaking spectral optimization. Here, this article proposes a scalable, non-shrinkable, patternable, and thermally insulative ceramic RC (SNPT-RC) using a roll-to-roll process, which can fill a vital niche in the field of radiative cooling. A stand-alone SNPT-RC exhibits excellent thermal insulation (≈0.251 W m-1 K-1 ) with flame-resistivity and high solar reflectance/long-wave emissivity (≈96% and 92%, respectively). Alternate stacks of intermediate porous alumina/borosilicate (Al2 O3 -BS) layers not only result in outstanding thermal and spectral characteristics, causing excellent sub-ambient cooling (i.e., 7.05 °C cooling), but also non-shrinkable feature. Moreover, a perforated SNPT-RC demonstrates its versatility as a breathable radiative cooling shade and as a semi-transparent window, making it a highly promising technology for practical deployment in energy-saving architecture.
Collapse
Affiliation(s)
- Seung Kyu Jeon
- Ceramic Total Solution CenterKorea Institute of Ceramic Engineering and Technology3321, Gyeongchung‐daero, Sindun‐myeon, Icheon‐si, Gyeonggi‐doIcheon17303Republic of Korea
| | - June Tae Kim
- Department of Electronics EngineeringPusan National University2, Busandaehak‐ro 63 beon‐gilBusan46241Republic of Korea
| | - Min Seong Kim
- Department of Electronics EngineeringPusan National University2, Busandaehak‐ro 63 beon‐gilBusan46241Republic of Korea
| | - In Soo Kim
- Nanophotonics Research CenterKorea Institute of Science and Technology5. Hwarang‐ro 14‐gil, Seongbuk‐guSeoul02792Republic of Korea
- KIST‐SKKU Carbon‐Neutral Research CenterSungkyunkwan University (SKKU)Suwon16419Republic of Korea
- School of Advanced Materials Science and EngineeringSungkyunkwan University (SKKU)Suwon16419Republic of Korea
| | - Sung Jin Park
- Ceramic Total Solution CenterKorea Institute of Ceramic Engineering and Technology3321, Gyeongchung‐daero, Sindun‐myeon, Icheon‐si, Gyeonggi‐doIcheon17303Republic of Korea
| | - Hyeondeok Jeong
- Carbon Composite Materials Research CenterKorea Institute of Science and Technology92 Chudong‐ro, Bongdong‐eupWanju‐gunJeonbuk55324Republic of Korea
| | - Gil Ju Lee
- Department of Electronics EngineeringPusan National University2, Busandaehak‐ro 63 beon‐gilBusan46241Republic of Korea
| | - Yeong Jae Kim
- Ceramic Total Solution CenterKorea Institute of Ceramic Engineering and Technology3321, Gyeongchung‐daero, Sindun‐myeon, Icheon‐si, Gyeonggi‐doIcheon17303Republic of Korea
| |
Collapse
|
4
|
Ko JH, Kim DH, Hong SH, Kim SK, Song YM. Polarization-driven thermal emission regulator based on self-aligned GST nanocolumns. iScience 2022; 26:105780. [PMID: 36590160 PMCID: PMC9800319 DOI: 10.1016/j.isci.2022.105780] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 12/05/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022] Open
Abstract
The increasing advances in thermal radiation regulators have attracted growing interest, particularly in infrared sources, thermal management, and camouflage. Despite many advances in dynamic thermal emitters with great controllability, sustained external energy is required to maintain the desired emission. In this study, we present a polarization-driven thermal emission regulator based on a two-way control: i) phase change and ii) polarization tuning. Based on a conventional, non-volatile phase change material, i.e., Ge2Sb2Te5 (GST), we newly introduce an anisotropic medium for facile emissivity regulation without heat energy consumption. A rigorous coupled-wave analysis method provides design guidelines for finding optimal structural parameters. We utilized a simple glancing angle deposition process which induces tilted self-aligned nanocolumns with anisotropic properties. The fabricated sample shows polarization-sensitive thermal regulation through thermal imaging spectroscopic measurement. Additionally, we manufactured a multispectral visibly/thermally camouflaged patch that identifies encrypted information at a specific polarization state for a proof-of-concept demonstration.
Collapse
Affiliation(s)
- Joo Hwan Ko
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Do Hyeon Kim
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Sung-Hoon Hong
- ICT Materials and Components Research Laboratory, Electronics and Telecommunications Research Institute (ETRI), Daejeon 34129, Republic of Korea
| | - Sun-Kyung Kim
- Department of Applied Physics, Kyung Hee University, Gyeonggi-do, Yongin-si 17104, Republic of Korea,Corresponding author
| | - Young Min Song
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea,Anti-Viral Research Center, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea,AI Graduate School, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea,Corresponding author
| |
Collapse
|
5
|
Hlavatsch M, Mizaikoff B. Advanced mid-infrared lightsources above and beyond lasers and their analytical utility. ANAL SCI 2022; 38:1125-1139. [PMID: 35780446 PMCID: PMC9420685 DOI: 10.1007/s44211-022-00133-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 05/11/2022] [Indexed: 11/05/2022]
Abstract
In the mid-infrared (MIR) spectral range, a series of applications have successfully been shown in the fields of sensing, security and defense, energy conservation, and communications. In particular, rapid and recent developments in MIR light sources have significantly increased the interest in developing MIR optical systems, sensors, and diagnostics especially for chem/bio detection schemes and molecular analytical application scenarios. In addition to the advancements in optoelectronic light sources, and especially quantum and interband cascade lasers (QCLs, ICLs) largely driving the increasing interest in the MIR regime, also thermal emitters and light emitting diodes (LEDs) offer opportunities to alternatively fill current gaps in spectral coverage specifically with analytical applications and chem/bio sensing/diagnostics in the focus. As MIR laser technology has been broadly covered in a variety of articles, the present review aims at summarizing recent developments in MIR non-laser light sources highlighting their analytical utility in the MIR wavelength range.
Collapse
Affiliation(s)
- Michael Hlavatsch
- Institute of Analytical and Bioanalytical Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Boris Mizaikoff
- Institute of Analytical and Bioanalytical Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany.
- Hahn-Schickard, Institute for Microanalysis Systems, Sedanstrasse 14, 89077, Ulm, Germany.
| |
Collapse
|
6
|
Kim DH, Lee GJ, Heo SY, Son S, Kang KM, Lee H, Song YM. Ultra-thin and near-unity selective emitter for efficient cooling. OPTICS EXPRESS 2021; 29:31364-31375. [PMID: 34615230 DOI: 10.1364/oe.438662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Abstract
For the efficient radiative cooling of objects, coolers should emit heat within atmospheric transparent window and block heat absorption from the surrounding environments. Thus, selective emitters enable highly efficient cooling via engineered photonic structures such as metamaterials and multi-stacking structures. However, these structures require sophisticated fabrication processes and large quantities of materials, which can restrict mass-production. This study introduces an ultra-thin (∼1 μm) and near-unity selective emitter (UNSE) within the atmospheric window, which can be fabricated using simple and affordable process. The combination of infrared (IR) lossy layers and high index lossless layer enhances the resonance in the structure thus, the emissivity in long wavelength IR region increases to near-unity within a thickness of ∼1 μm.
Collapse
|