Microgroove-structured liquid-like surface for liquid discrimination

IF 6.8 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science China Materials Pub Date : 2024-08-23 DOI:10.1007/s40843-024-3054-9

Shouzheng Jiao (, ), Peng Cheng (, ), Hua Lai (, ), Zhongjun Cheng (, ), Yuyan Liu (, ), Lei Jiang (, )

{"title":"Microgroove-structured liquid-like surface for liquid discrimination","authors":"Shouzheng Jiao \n (, ), Peng Cheng \n (, ), Hua Lai \n (, ), Zhongjun Cheng \n (, ), Yuyan Liu \n (, ), Lei Jiang \n (, )","doi":"10.1007/s40843-024-3054-9","DOIUrl":null,"url":null,"abstract":"<div><p>Discriminating between different liquids using surfaces with special wettability holds significant implications for both fundamental research and practical applications. However, current differentiation surfaces still struggle with challenges such as complex microstructure design, a limited detection range, and poor stability. In this study, we present a new platform for droplet discrimination achieved through a combination of groove structures and a liquid-like polydimethylsiloxane (PDMS) brushes coating. The PDMS brushes coating exhibits excellent stability and low adhesion across a wide range of liquids with surface tensions ranging from 27.5 to 72.8 mN/m, while the groove structure provides distinct energy barriers for droplet sliding. Consequently, liquids with varying surface tensions can be effectively discriminated, as evidenced by the increased sliding angles (SAs) observed as liquids with lower surface tension moving across the groove. Furthermore, we utilized a three dimensional (3D) model of the droplet developed using Surface Evolver, and conducted energy variation calculations during droplet sliding across the groove to analyze the SA differences among liquids with different surface tensions. Additionally, we proposed two simple differentiation platforms that successfully demonstrated effective droplet discrimination. This work introduces a novel strategy for droplet discrimination, offering innovative ideas for the design of functional surfaces. These findings may potentially be applied in other fields involving droplet manipulation, such as droplet-based microchemical reactions and bio-detection.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"67 11","pages":"3719 - 3726"},"PeriodicalIF":6.8000,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Science China Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s40843-024-3054-9","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Discriminating between different liquids using surfaces with special wettability holds significant implications for both fundamental research and practical applications. However, current differentiation surfaces still struggle with challenges such as complex microstructure design, a limited detection range, and poor stability. In this study, we present a new platform for droplet discrimination achieved through a combination of groove structures and a liquid-like polydimethylsiloxane (PDMS) brushes coating. The PDMS brushes coating exhibits excellent stability and low adhesion across a wide range of liquids with surface tensions ranging from 27.5 to 72.8 mN/m, while the groove structure provides distinct energy barriers for droplet sliding. Consequently, liquids with varying surface tensions can be effectively discriminated, as evidenced by the increased sliding angles (SAs) observed as liquids with lower surface tension moving across the groove. Furthermore, we utilized a three dimensional (3D) model of the droplet developed using Surface Evolver, and conducted energy variation calculations during droplet sliding across the groove to analyze the SA differences among liquids with different surface tensions. Additionally, we proposed two simple differentiation platforms that successfully demonstrated effective droplet discrimination. This work introduces a novel strategy for droplet discrimination, offering innovative ideas for the design of functional surfaces. These findings may potentially be applied in other fields involving droplet manipulation, such as droplet-based microchemical reactions and bio-detection.

Abstract Image

查看原文本刊更多论文

用于辨别液体的微凹槽结构类液体表面

利用具有特殊润湿性的表面来区分不同的液体，对基础研究和实际应用都具有重要意义。然而，目前的分辨表面仍然面临着复杂的微结构设计、有限的检测范围和较差的稳定性等挑战。在本研究中，我们介绍了一种新的液滴分辨平台，它是通过沟槽结构与液态聚二甲基硅氧烷（PDMS）刷涂层的结合实现的。在表面张力为 27.5 到 72.8 mN/m 的各种液体中，PDMS 刷涂层都表现出卓越的稳定性和低粘附性，而沟槽结构则为液滴滑动提供了明显的能量障碍。因此，不同表面张力的液体都能被有效区分开来，这一点从表面张力较低的液体在沟槽中移动时滑动角（SA）增大可以看出。此外，我们还利用利用表面进化器开发的液滴三维（3D）模型，在液滴滑过凹槽的过程中进行了能量变化计算，以分析不同表面张力的液体之间的滑动角差异。此外，我们还提出了两个简单的区分平台，成功地展示了有效的液滴区分。这项工作引入了一种新的液滴分辨策略，为功能表面的设计提供了创新思路。这些发现有可能应用于涉及液滴操作的其他领域，如基于液滴的微化学反应和生物检测。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Science China Materials Materials Science-General Materials Science

CiteScore

11.40

自引率

7.40%

发文量

949

期刊介绍： Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.