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Thermal Homeostasis using Nanophotonic Phase-Change Materials

使用纳米光子相变材料实现热稳态

基本信息

批准号：
1711268
负责人：
Michelle Povinelli
金额：
$ 37.5万
依托单位：
University of Southern California
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-07-01 至 2021-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1711268&HistoricalAwards=false
关键词：
Thermal Homeostasis using Nanophotonic Phase

项目摘要

Title: Thermal Self-Regulation using Nanoscale Photonic Phase-Change MaterialsNon-Technical Description: Humans, mammals, and birds are able to maintain their body temperatures at a constant value. Engineered materials that could regulate their own temperature, or maintain thermal homeostasis, would lead to transformative advances in energy savings and thermal control. The objective of this work is to use nanostructured, phase-change materials to achieve this goal. Educational activities integrated into the research will train undergraduate and graduate students in a range of skills useful for careers in science and engineering. The students will gain hands-on experience with computer simulation, microfabrication, and measurement. These skills will be useful for R&D careers in either industry or academia. Public outreach activities project will build understanding and appreciation of research careers among the general public. Photo-documentary techniques will be used to show the practice of lab research, including the work of women and minority researchers. The outreach program will be scaled up through an interactive workshop in which high school, undergraduate and graduate researchers will launch their own photo-documentary platforms for social media.Technical Description: The proposed work will explore the limits of thermal homeostasis via control over light absorption and thermal emission. Phase-change materials such as vanadium dioxide have optical properties that change dramatically at their phase transition temperature. Moreover, nano-photonic materials such as photonic crystals and metamaterials allow fine control over the thermal emission properties. This raises the possibility of designing materials whose absorption and emission spectra that self-adjust with temperature to minimize the temperature variation that they experience due to a changing heat load. Our technical approach will encompass fundamental theory, materials design, and experiment. We will use analytical models to understand the fundamental limits on passive temperature self-regulation in materials with engineered thermal radiation profiles. We will then use accurate electromagnetic models to design nanostructured materials with the desired thermal radiation profiles. We will make these novel materials using nanofabrication methods and test their radiative/emission properties experimentally. We will then test the material's ability to self-regulate their temperature. The outcome of this research will be an improved understanding of materials design for environments with varying heat loads. It will thus apply to a range of application areas, including electronics, building thermal management, and space-based systems. The scientific knowledge we gain will potentially lead to new methods for materials design and manufacturing.

职务名称：使用纳米级光子相变材料的热自我调节非技术描述：人类，哺乳动物和鸟类能够将其体温保持在恒定值。能够调节自身温度或保持热稳态的工程材料将导致节能和热控制的变革性进展。这项工作的目标是使用纳米结构的相变材料来实现这一目标。纳入研究的教育活动将培养本科生和研究生在科学和工程职业生涯中有用的一系列技能。学生将获得计算机模拟，微加工和测量的实践经验。这些技能将对工业界或学术界的研发事业有用。公众推广活动项目将在公众中建立对研究事业的理解和欣赏。将使用摄影纪录片技术来展示实验室研究的实践，包括妇女和少数民族研究人员的工作。该推广计划将通过一个互动的研讨会，高中，本科和研究生的研究人员将推出自己的照片纪录片平台的社交媒体。技术描述：拟议的工作将探索通过控制光吸收和热发射的热稳态的限制。诸如二氧化钒的相变材料具有在其相变温度下显著改变的光学性质。此外，纳米光子材料如光子晶体和超材料允许对热发射特性进行精细控制。这提高了设计材料的可能性，其吸收和发射光谱随温度自调整，以最小化由于热负荷变化而导致的温度变化。我们的技术方法将包括基础理论，材料设计和实验。我们将使用分析模型来了解具有工程热辐射轮廓的材料中被动温度自调节的基本限制。然后，我们将使用精确的电磁模型来设计具有所需热辐射轮廓的纳米结构材料。我们将使用纳米纤维方法制造这些新材料，并通过实验测试它们的辐射/发射特性。然后，我们将测试材料自我调节温度的能力。这项研究的结果将是一个更好的理解材料设计的环境与不同的热负荷。因此，它将适用于一系列应用领域，包括电子、建筑热管理和天基系统。我们获得的科学知识将可能导致材料设计和制造的新方法。

项目成果

期刊论文数量（5）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Experimental demonstration of dynamic thermal regulation using vanadium dioxide thin films

DOI：
10.1038/s41598-020-70931-0
发表时间：
2020-08-18
期刊：
SCIENTIFIC REPORTS
影响因子：
4.6
作者：
Morsy, Ahmed M.;Barako, Michael T.;Povinelli, Michelle L.
通讯作者：
Povinelli, Michelle L.

Thermal homeostasis using microstructured phase-change materials

DOI：
10.1364/optica.4.001390
发表时间：
2017-11
期刊：
影响因子：
0
作者：
Shao-Hua Wu;Ming-Keh Chen;M. Barako;Vladan Janković;P. Hon;L. Sweatlock;M. Povinelli
通讯作者：
Shao-Hua Wu;Ming-Keh Chen;M. Barako;Vladan Janković;P. Hon;L. Sweatlock;M. Povinelli

High temperature, experimental thermal memory based on optical resonances in photonic crystal slabs