亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Morpho Butterfly-Inspired Spectral Emissivity of Metallic Microstructures for Radiative Cooling

发射率 辐射冷却 辐射传输 材料科学 被动冷却 选择性表面 光学 黑体辐射 热辐射 光电子学 热的 辐射 物理 气象学 热力学
作者
Anirudh Krishna,Jae-Ho Lee
标识
DOI:10.1109/itherm.2018.8419652
摘要

Radiative cooling offers unique capabilities of controlling surface temperature and improving the energy efficiency of various systems ranging from buildings to micro-devices and personal clothing using re-emission of heat via the atmospheric transmission spectrum in the spectral range of 814 μm. Control of the spectral emissivity profile results in control of the thermal behavior of the surfaces. Tailoring the emissivity profile to match the atmospheric transmission spectrum results in radiative cooling of surfaces. Here we investigate the use of bio-inspired designs for radiative cooling applications. Our simulations of Morpho butterfly inspired branched microstructures (micro-trees, briefly) based on rigorous coupled wave analysis offer optimally-designed micro-trees that act as perfect reflectors of incident solar radiation, while acting as near-black bodies within the atmospheric transmission spectrum. The structural periodicities result in an emissivity below 0.2 between 1 μm and 6 μm, reducing adverse effects of solar heating. Meanwhile the emissivity remains above 0.7 for 8-14 μm, offering an increased opportunity for radiative cooling. The use of typically hot metallic surfaces, with very low emissivity values, results in radiative cooled metallic micro-trees with spectral-selective emissivity. The surface temperature of metallic micro-trees is roughly 9-10 K lower than bare metallic surfaces, aided by an increased cooling power of roughly 140 W/m2. The spectral selectivity of these structures is attained by the tunable morphology of the structures themselves. The bio-inspired micro-trees present opportunities for passive radiative cooling, with their structural flexibility and spectral tuning opening the field for broad thermal management applications.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
3秒前
11秒前
21秒前
朴实云应发布了新的文献求助10
27秒前
林子青完成签到,获得积分10
1分钟前
核桃发布了新的文献求助30
1分钟前
李健应助reerwt采纳,获得10
1分钟前
1分钟前
ICSSCI发布了新的文献求助10
1分钟前
1分钟前
刘宇童给刘宇童的求助进行了留言
1分钟前
reerwt发布了新的文献求助10
1分钟前
1分钟前
科研通AI2S应助科研通管家采纳,获得10
1分钟前
科研通AI2S应助科研通管家采纳,获得10
1分钟前
ICSSCI完成签到,获得积分10
2分钟前
2分钟前
董可以发布了新的文献求助10
2分钟前
风华正茂完成签到,获得积分10
2分钟前
2分钟前
3分钟前
jimmy_bytheway完成签到,获得积分0
3分钟前
桃桃发布了新的文献求助10
3分钟前
可爱的函函应助桃桃采纳,获得10
3分钟前
3分钟前
3分钟前
3分钟前
3分钟前
NexusExplorer应助科研通管家采纳,获得10
3分钟前
所所应助爱笑的毛衣采纳,获得10
3分钟前
4分钟前
4分钟前
duan完成签到 ,获得积分10
4分钟前
holder完成签到,获得积分10
4分钟前
4分钟前
沐白发布了新的文献求助10
4分钟前
4分钟前
刘宇童发布了新的文献求助10
5分钟前
大模型应助吕易巧采纳,获得10
5分钟前
迷人问兰完成签到,获得积分10
5分钟前
高分求助中
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3990049
求助须知:如何正确求助?哪些是违规求助? 3532108
关于积分的说明 11256369
捐赠科研通 3270998
什么是DOI,文献DOI怎么找? 1805166
邀请新用户注册赠送积分活动 882270
科研通“疑难数据库(出版商)”最低求助积分说明 809228