Nano-Scale Physics of Icephobicity and Path Toward Durable Icephobic Surfaces

纳米尺度的疏冰物理和通往耐用疏冰表面的道路

• 批准号: 1804204
• 负责人: Hadi Ghasemi
• 金额: $ 29.03万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-07-15 至 2021-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1804204&HistoricalAwards=false
• 关键词: Nano; Scale; Physics; Icephobicity; Path

Anti-icing surfaces play a critical role in human daily lives in cold climates by impacting a broad range of systems including infrastructure, transportation networks, and power generation systems. Icing in electricity transmission systems can lead to collapse of poles and towers and rupture of conductors. Icing in aircrafts results in increased drag and may lead to loss of lift force and potential catastrophic events. Icing in energy systems significantly drops the heat transfer rate leading to inefficient operation of these systems. According to the Lawrence Berkeley National Laboratory, ice storms account for 10% of power transmission outages in the United States. The financial loss for industries is estimated at $3-5 billion annually. In addition to financial losses, around 3 million people in the US suffer from power losses caused by ice storms every winter. Despite the vital role in society, the development of high-performance anti-icing surfaces for such demanding applications remains elusive. This research will involve experiments and theory to reveal the role of length scale, geometry, and interfacial curvature on ice formation, and will develop new tools to address icing.Non-wetting, liquid-infused and hydrated surfaces have inspired routes for development of anti-icing surfaces. However, high freezing temperature, high ice adhesion strength (~50-100 kPa) and subsequent ice accretion, low mechanical durability, and high production cost have restricted their practical applications. The goal of this research program is to elucidate the underlying nano-scale physics of ice formation and adhesion on surfaces which involves studies of thermodynamics, heat transfer and mechanics of solid-ice interfaces. These physics provide fundamental routes for suppression of ice formation and minimization of ice adhesion on surfaces. We propose to break the limit of icephobicity at the nano-scale. Through studies of ice nucleation and growth at the nano-scale using Environmental Scanning Electron Microscopy and confined nano-channels, we will explore the icephobicity limits. A new predictive mathematical model on ice adhesion is proposed that provides fundamental routes to achieve extremely low ice adhesion along with high durability. Investigators will examine this predictive model and subsequently develop and characterize a new class of icephobic materials called 3D nano-viscoelastic materials. These anti-icing materials will be examined through various icephobicity and durability metrics. The educational tasks in this research program will provide a platform to discover the talents of students from underrepresented groups and to equip them with micro/nano engineering skills required for future multidisciplinary work environments.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

防冰表面通过影响包括基础设施、交通网络和发电系统在内的广泛系统，在寒冷气候下的人类日常生活中发挥着至关重要的作用。输电系统结冰可能会导致杆塔倒塌和导线断裂。飞机结冰会导致阻力增加，并可能导致升力损失和潜在的灾难性事件。能源系统中的结冰显著降低了热传递速率，导致这些系统的低效运行。根据劳伦斯伯克利国家实验室的数据，冰暴占美国输电中断的10%。据估计，工业每年的经济损失为30-50亿美元。除了经济损失外，每年冬天，美国约有300万人遭受冰暴造成的电力损失。尽管在社会中扮演着至关重要的角色，但针对这种苛刻应用的高性能防冰表面的开发仍然难以捉摸。这项研究将包括实验和理论，以揭示长度尺度、几何形状和界面曲率对结冰的作用，并将开发新的工具来解决结冰问题。非湿润、充满液体和水合的表面启发了防冰表面的发展。然而，较高的结冰温度、较高的附冰强度(~50~100kPa)和后续的结冰、较低的机械耐久性和较高的生产成本限制了它们的实际应用。这项研究计划的目标是阐明冰在表面形成和附着的纳米级物理基础，这涉及到固体-冰界面的热力学、传热学和力学研究。这些物理原理为抑制冰的形成和减少冰在表面的附着提供了基本途径。我们建议在纳米尺度上打破憎冰的极限。通过环境扫描电子显微镜和受限纳米通道在纳米尺度上对冰的成核和生长的研究，我们将探索冰生生物的极限。提出了一种新的冰粘附力预测数学模型，为实现极低的冰附着力和高耐久性提供了基本途径。研究人员将检验这一预测模型，并随后开发和表征一种名为3D纳米粘弹性材料的新型疏水材料。这些防冰材料将通过各种憎冰和耐久性指标进行检验。该研究计划中的教育任务将提供一个平台，以发现来自代表性不足群体的学生的才华，并为他们提供未来多学科工作环境所需的微/纳米工程技能。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Temperature Discontinuity at an Evaporating Water Interface

• DOI: 10.1021/acs.jpcc.9b10838
• 发表时间: 2020-01-16
• 期刊: JOURNAL OF PHYSICAL CHEMISTRY C
• 影响因子: 3.7
• 作者: Jafari, Parham;Amritkar, Amit;Ghasemi, Hadi
• 通讯作者: Ghasemi, Hadi

Stress-localized durable icephobic surfaces

• DOI: 10.1039/c8mh01291a
• 发表时间: 2019-04-01
• 期刊: MATERIALS HORIZONS
• 影响因子: 13.3
• 作者: Irajizad, Peyman;Al-Bayati, Abdullah;Ghasemi, Hadi
• 通讯作者: Ghasemi, Hadi

Icephobic surfaces: Definition and figures of merit

• DOI: 10.1016/j.cis.2019.04.005
• 发表时间: 2019-07-01
• 期刊: ADVANCES IN COLLOID AND INTERFACE SCIENCE
• 影响因子: 15.6
• 作者: Irajizad, Peyman;Nazifi, Sina;Ghasemi, Hadi
• 通讯作者: Ghasemi, Hadi

Networked Zwitterionic Durable Antibacterial Surfaces

• DOI: 10.1021/acsabm.9b00982
• 发表时间: 2020-02-17
• 期刊: ACS APPLIED BIO MATERIALS
• 影响因子: 4.7
• 作者: Huang, Zixu;Nazifi, Sina;Ghasemi, Hadi
• 通讯作者: Ghasemi, Hadi

Stress-localized durable anti-biofouling surfaces

• DOI: 10.1039/c9sm00790c
• 发表时间: 2019-08-07
• 期刊: SOFT MATTER
• 影响因子: 3.4
• 作者: Eslami, Bahareh;Irajizad, Peyman;Ghasemi, Hadi
• 通讯作者: Ghasemi, Hadi