Thermal Evaporation around Optically-Excited Functionalized Nanoparticles

光激发功能化纳米颗粒周围的热蒸发

• 批准号: 1706039
• 负责人: Tengfei Luo
• 金额: $ 35万
• 依托单位: University of Notre Dame
• 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: 2017-09-01 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1706039&HistoricalAwards=false
• 关键词: Thermal; Evaporation; around; Optically; Excited

Optical absorber-assisted thermal evaporation can enable a variety of innovative renewable energy applications, ranging from water purification to chemical fractionation. Many of these applications can catalyze new industries and hence drive global economic growth. For example, the ability to use solar energy for fresh water production will tackle many challenges in the water-energy nexus. The present project is motivated by a recently observed liquid evaporation using highly localized heating effect from functionalized light absorbing nanoparticles. In such a demonstration, water vapor was generated while the bulk temperature remained at about 30 degrees C. The underlying physics is not yet understood, and the mechanism is related to the convoluted multi-phase (liquid-vapor-solid) thermal and mass transport, which needs this multi-disciplinary study to unlock. The fundamental thermal transport science to be gained from this project is expected to guide the development of new technologies to utilize solar energy, resulting in significant broader impacts on applications. This project will enable the education and training of graduate students and undergraduate students from under-represented groups in the universities.This project is driven by the hypothesis that enhanced interfacial thermal transport and the self-assembled monolayer defect-assisted nucleation combine to enhance bubble generation and improve the overall evaporation effect. To test this hypothesis, the objectives of this proposal are to (1) understand the fundamental relationship between the surface functionalization, thermal transport and the subsequently mass transport in bubble dynamics through a combination of molecular simulations and mesoscale hydrodynamics modeling; and (2) validate such a relationship through experiments on vapor generation around photo-excited functionalized nanoparticles. This project will employ a combination of molecular simulation, mesoscale modeling and experimental validation to achieve a multi-scale understanding of this fundamental problem with unprecedented resolution.

光吸收辅助热蒸发可以实现从水净化到化学分馏的各种创新的可再生能源应用。其中许多应用可以催生新的产业，从而推动全球经济增长。例如，利用太阳能生产淡水的能力将解决水-能源关系中的许多挑战。本项目的动机是最近观察到的液体蒸发，利用功能化光吸收纳米颗粒的高度局域加热效应。在这样的演示中，水蒸气是在主体温度保持在30摄氏度左右的情况下产生的，其基本物理尚不清楚，其机制与错综复杂的多相(液体-蒸汽-固体)热和质量传输有关，这需要这一多学科研究来解锁。预计从该项目中获得的基础热传输科学将指导开发利用太阳能的新技术，从而对应用产生重大的更广泛的影响。该项目将对大学中代表不足的群体的研究生和本科生进行教育和培训。该项目的驱动假设是，增强的界面热输运和自组装的单层缺陷辅助成核结合在一起，促进气泡的产生，改善整体蒸发效果。为了验证这一假设，本方案的目的是(1)通过分子模拟和介观流体动力学模拟相结合的方法，了解气泡动力学中表面官能化、热输运和随后的质量输运之间的基本关系；(2)通过光激发功能化纳米颗粒周围的水蒸气产生实验来验证这种关系。该项目将采用分子模拟、中尺度模拟和实验验证相结合的方法，以前所未有的分辨率实现对这一基本问题的多尺度理解。

项目成果

Spill-SOS: Self-Pumping Siphon-Capillary Oil Recovery

Spill-SOS：自泵虹吸毛细管采油

• DOI: 10.1021/acsnano.9b05703
• 发表时间: 2019
• 期刊: ACS Nano
• 影响因子: 17.1
• 作者: Shenghao Wu;Huachao Yang;Guoping Xiong;Yikuan Tian;Biyao Gong;Tengfei Luo;Timothy S. Fisher;Jianhua Yan;Kefa Cen;Zheng Bo;Kostya Ken Ostrikov
• 通讯作者: Kostya Ken Ostrikov

Black body-like radiative cooling for flexible thin-film solar cells

• DOI: 10.1016/j.solmat.2019.02.015
• 发表时间: 2019-06-01
• 期刊: SOLAR ENERGY MATERIALS AND SOLAR CELLS
• 影响因子: 6.9
• 作者: Lee, Eungkyu;Luo, Tengfei
• 通讯作者: Luo, Tengfei

Controlling the Rotational Barrier of Single Porphyrin Rotors on Surfaces

控制单卟啉转子表面的旋转势垒

• DOI: 10.1021/acs.jpcb.9b09986
• 发表时间: 2020
• 期刊: Journal of Physical Chemistry B
• 影响因子: 3.3
• 作者: Zhang Qiushi;Pang Rui;Luo Tengfei;Van Hove Michel A.
• 通讯作者: Van Hove Michel A.

Ballistic supercavitating nanoparticles driven by single Gaussian beam optical pushing and pulling forces

• DOI: 10.1038/s41467-020-16267-9
• 发表时间: 2020-05-15
• 期刊: NATURE COMMUNICATIONS
• 影响因子: 16.6
• 作者: Lee, Eungkyu;Huang, Dezhao;Luo, Tengfei
• 通讯作者: Luo, Tengfei

Long-distance optical pulling of nanoparticle in a low index cavity using a single plane wave

• DOI: 10.1126/sciadv.aaz3646
• 发表时间: 2020-05-01
• 期刊: SCIENCE ADVANCES
• 影响因子: 13.6
• 作者: Lee, E.;Luo, T.
• 通讯作者: Luo, T.