CAREER: Towards A Paradigm of Sustainable Liquid Repellent Surfaces

职业生涯：迈向可持续液体排斥表面的范例

• 批准号: 1947454
• 负责人: Arun Kumar Kota
• 金额: $ 49.73万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-07-15 至 2024-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1947454&HistoricalAwards=false
• 关键词: CAREER; Towards; Paradigm; Sustainable; Liquid

This Faculty Early Career Development Program (CAREER) award supports research that will contribute new fundamental knowledge in the field of surface science, related to liquid-repellent surfaces (often called non-stick coatings). Typically, liquid-repellent surfaces are made with long chain fluorocarbon materials. However, long chain fluorocarbon materials are rapidly being phased out because of the growing concerns regarding their negative environmental and biological impacts. This research promotes national health by developing alternative surface treatments to the currently used toxic bio-accumulating materials. New hydro- and omniphobic materials are increasingly in demand for defense and commercial applications in textiles, surface coatings in harsh or "dirty" environments, among others. The work advances the science of surface repellents by providing the basic knowledge needed to design novel liquid-repellent surfaces with the more benign short chain fluorocarbon materials and with performance (i.e., degree of liquid repellency) equivalent to the long chain fluorocarbon materials. Such innovative liquid-repellent surfaces have the potential to drastically alter the non-stick coatings technology landscape in civilian, industrial and defense sectors. Therefore, the results and insights from this research will be significantly beneficial to the U.S. economy and society. The education activities are integrated with this research through the generation of STEM education kits and do-it-yourself (DIY) videos on "Fun with Surface" to be used in K-12 science classes in conjunction with teacher training workshops.Liquid-repellent surfaces consisting of long chain fluorocarbons (i.e., linear molecules with 8 or more fully fluorinated carbons) decompose into perfluorooctanoic acid, which is bio-accumulative and is considered an emerging contaminant. So, it is essential to develop alternative sustainable materials (e.g., short chain fluorocarbons) that can be as liquid-repellent as long chain fluorocarbons. The research is based on the hypothesis that short chain fluorocarbons with high surface crystallinity and re-entrant morphology will offer liquid-repellency equivalent to long chain fluorocarbons. To test this hypothesis, the research team will systematically investigate the influence of molecular architecture of fluorocarbon surface ligands and surface modification reaction coordinates on surface crystallinity and morphology. The resulting liquid-repellency will be investigated experimentally and compared with theoretical predictions. Overall, this research will provide a thorough understanding of molecular architecture-processing-structure-property relationships involved in design of liquid-repellent surfaces and pave the way to a paradigm of sustainable liquid-repellent surfaces.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.

这项教师早期职业发展计划（职业）奖支持将在表面科学领域提供新的基本知识的研究，该知识与液体液体表面有关（通常称为不粘涂层）。通常，液态表面是用长链碳碳材料制成的。然而，由于对它们的负面环境和生物学影响的关注日益严重，因此长链碳纤维材料正在迅速被淘汰。这项研究通过为当前使用的有毒生物蓄能材料开发替代性表面处理来促进国家健康。对纺织品的防御和商业应用的需求越来越多，新的水力和食性材料越来越多。这项工作通过提供更良性的短链碳氟化合物材料和性能（即液体驱除度）等效的性能（即，液态程度）来设计新型液体固定表面所需的基本知识，从而提高了表面驱虫剂的科学。这种创新的液体液体表面有可能会大大改变平民，工业和国防部门的不粘涂料技术景观。因此，这项研究的结果和见解将对美国的经济和社会有很大的好处。教育活动通过生成STEM教育套件和做自己动手（DIY）的视频与这项研究融合在一起，该视频与教师培训讲习班一起在K-12科学课程中用于K-12科学课程。纤维化的表面。纤维化的表面，由长链氟化物组成的长链含量（即，与8或更完全的分子）组成的carbons carbons carbons carbons carbons carbons cartoctor carons carbons cars cars carons cornocul carons cornotial carbons carson carbons carson carbons carbons controic carons carbons carbons。这是生物蓄能的，被认为是一种新兴的污染物。因此，必须开发替代性可持续材料（例如，短链氟化合物），它们可以像长链氟化合物一样固定液体。这项研究基于以下假设：具有高表面结晶度和重入形态的短链荧光照将提供相当于长链氟化合物的液体固定性。为了检验这一假设，研究团队将系统地研究氟化合物表面配体的分子结构和表面修饰反应在表面结晶度和形态学上的影响。由此产生的液体将进行实验研究，并将其与理论预测进行比较。总体而言，这项研究将对参与液体固定表面设计的分子体系结构处理的关系提供透彻的理解，并为可持续的液体固定型表面范围铺平了道路。该奖项反映了NSF的法定任务，并通过使用基金会的智力效果进行评估，并被评估值得评估。

项目成果

On-demand, remote and lossless manipulation of biofluid droplets.

• DOI: 10.1039/d2mh00695b
• 发表时间: 2022-10-31
• 期刊: Materials horizons
• 影响因子: 13.3

Design and application of a self-pumping microfluidic staggered herringbone mixer

• DOI: 10.1007/s10404-021-02426-x
• 发表时间: 2021-03-19
• 期刊: MICROFLUIDICS AND NANOFLUIDICS
• 影响因子: 2.8
• 作者: Channon, Robert B.;Menger, Ruth F.;Henry, Charles S.
• 通讯作者: Henry, Charles S.

Hemocompatibility of super-repellent surfaces: current and future

• DOI: 10.1039/c9mh00051h
• 发表时间: 2019-10-01
• 期刊: MATERIALS HORIZONS
• 影响因子: 13.3
• 作者: Movafaghi, Sanli;Wang, Wei;Kota, Arun K.
• 通讯作者: Kota, Arun K.

Trade-off in membrane distillation with monolithic omniphobic membranes

• DOI: 10.1038/s41467-019-11209-6
• 发表时间: 2019-07-19
• 期刊: NATURE COMMUNICATIONS
• 影响因子: 16.6
• 作者: Wang, Wei;Du, Xuewei;Tong, Tiezheng
• 通讯作者: Tong, Tiezheng

Impact of superhydrophobicity on the fluid dynamics of a bileaflet mechanical heart valve

超疏水性对双叶机械心脏瓣膜流体动力学的影响

• DOI: 10.1016/j.jmbbm.2020.103895
• 发表时间: 2020
• 期刊: Journal of the Mechanical Behavior of Biomedical Materials
• 影响因子: 3.9
• 作者: Hatoum, Hoda;Vallabhuneni, Sravanthi;Kota, Arun Kumar;Bark, David L.;Popat, Ketul C.;Dasi, Lakshmi Prasad
• 通讯作者: Dasi, Lakshmi Prasad