Reversible Liquid Adhesion Switching of Superamphiphobic Pd-Decorated Ag Dendrites via Gas-Induced Structural Changes

Kim, ﻿Dayeong; Seo, Jungmok; Shin, Sera; Lee, Soonil; Lee, Kilsoo; Cho, Hyeonjin; Shim, Wooyoung; Lee, Han‐Bo‐Ram; Lee, Taeyoon

doi:10.1021/acs.chemmater.5b01038

Cited by 27 publications

(20 citation statements)

References 36 publications

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“…Open-channel droplet-based microfluidic systems have several benefits compared with conventional closed-channel based microfluidic devices in terms of easy introduction of sample liquid, low sample and energy consumptions, and rapid chemical and biological reactions [ 155 , 156 , 157 , 158 , 159 , 160 , 161 , 162 , 163 , 164 , 165 ]. Manipulation of droplet motions is most important for the open-channel droplet-based microfluidic system.…”

Section: Biomedical Applications Of Bio-inspired Extreme Wetting Smentioning

confidence: 99%

Bio-Inspired Extreme Wetting Surfaces for Biomedical Applications

et al. 2016

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Biological creatures with unique surface wettability have long served as a source of inspiration for scientists and engineers. More specifically, materials exhibiting extreme wetting properties, such as superhydrophilic and superhydrophobic surfaces, have attracted considerable attention because of their potential use in various applications, such as self-cleaning fabrics, anti-fog windows, anti-corrosive coatings, drag-reduction systems, and efficient water transportation. In particular, the engineering of surface wettability by manipulating chemical properties and structure opens emerging biomedical applications ranging from high-throughput cell culture platforms to biomedical devices. This review describes design and fabrication methods for artificial extreme wetting surfaces. Next, we introduce some of the newer and emerging biomedical applications using extreme wetting surfaces. Current challenges and future prospects of the surfaces for potential biomedical applications are also addressed.

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Section: Biomedical Applications Of Bio-inspired Extreme Wetting Smentioning

confidence: 99%

Bio-Inspired Extreme Wetting Surfaces for Biomedical Applications

et al. 2016

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“…Further reaction tends to occur preferentially at energetically favorable Ag nanoparticles deposited on the Cu plate. When the Cu plate was immersed for more than 1 min, trunks and short branches of Ag dendrites began to grow from the sites (Figure c,d) . After 10 min, hierarchical structures composed of Ag nanoparticles, branches, and leaves were fabricated (Figure e).…”

Section: Resultsmentioning

confidence: 99%

A Droplet‐Based High‐Throughput SERS Platform on a Droplet‐Guiding‐Track‐Engraved Superhydrophobic Substrate

Shin

Lee

et al. 2016

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provides information about molecular vibrations, which can be used for molecular detection, identification, and diagnosis. [1] Over the last few decades, surface-enhanced Raman scattering (SERS) techniques, in which the Raman signals are significantly enhanced based on strong electromagnetic fields amplified by noble metal nanostructures, have been developed, demonstrating powerful analytic performance, including superb sensitivity for the detection of molecules. [2][3][4] SERS-based detection has been explored in a broad range of research fields as an attractive and promising spectroscopic technique. In particular, microfluidic devices coupled with SERS have been recently demonstrated for in situ monitoring of chemical reactions and detection of analytes. [5][6][7] To obtain SERS-integrated microfluidic devices, SERS-active metallic nanostructures fabricated by various methods, such as electromigration, [8] E-beam lithography, [9,10] A novel droplet-based surface-enhanced Raman scattering (SERS) sensor for highthroughput real-time SERS monitoring is presented. The developed sensors are based on a droplet-guiding-track-engraved superhydrophobic substrate covered with hierarchical SERS-active Ag dendrites. The droplet-guiding track with a droplet stopper is designed to manipulate the movement of a droplet on the superhydrophobic substrate. The superhydrophobic Ag dendritic substrates are fabricated through a galvanic displacement reaction and subsequent self-assembled monolayer coating. The optimal galvanic reaction time to fabricate a SERS-active Ag dendritic substrate for effective SERS detection is determined, with the optimized substrate exhibiting an enhancement factor of 6.3 × 10 5 . The height of the droplet stopper is optimized to control droplet motion, including moving and stopping. Based on the manipulation of individual droplets, the optimized droplet-based real-time SERS sensor shows high resistance to surface contaminants, and droplets containing rhodamine 6G, Nile blue A, and malachite green are successively controlled and detected without spectral interference. This noble droplet-based SERS sensor reduces sample preparation time to a few seconds and increased detection rate to 0.5 µL s −1 through the simple operation mechanism of the sensor. Accordingly, our sensor enables high-throughput real-time molecular detection of various target analytes for real-time chemical and biological monitoring.

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“…In terms of fast penetration into the sample fluid, energy consumption and low samples, quick chemical and biological reactions [161][162][163][164][165][166][167][168][169][170][171], such as microfluidic droplet systems, have many advantages compared to traditional closed-channel, microfluidic applications. A gout-based microfluidic system [163] was introduced on a superhydrophobic, porous oxide membrane by You et al To direct the water droplets, they inserted hydrophilic PDAs on superhydrophobic surfaces.…”

Section: Lab-on-a-chip Based On Open Channel Dropletsmentioning

confidence: 99%

Recent Developments in Artificial Super-Wettable Surfaces Based on Bioinspired Polymeric Materials for Biomedical Applications

et al. 2022

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Inspired by nature, significant research efforts have been made to discover the diverse range of biomaterials for various biomedical applications such as drug development, disease diagnosis, biomedical testing, therapy, etc. Polymers as bioinspired materials with extreme wettable properties, such as superhydrophilic and superhydrophobic surfaces, have received considerable interest in the past due to their multiple applications in anti-fogging, anti-icing, self-cleaning, oil–water separation, biosensing, and effective transportation of water. Apart from the numerous technological applications for extreme wetting and self-cleaning products, recently, super-wettable surfaces based on polymeric materials have also emerged as excellent candidates in studying biological processes. In this review, we systematically illustrate the designing and processing of artificial, super-wettable surfaces by using different polymeric materials for a variety of biomedical applications including tissue engineering, drug/gene delivery, molecular recognition, and diagnosis. Special attention has been paid to applications concerning the identification, control, and analysis of exceedingly small molecular amounts and applications permitting high cell and biomaterial cell screening. Current outlook and future prospects are also provided.

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Reversible Liquid Adhesion Switching of Superamphiphobic Pd-Decorated Ag Dendrites via Gas-Induced Structural Changes

Cited by 27 publications

References 36 publications

Bio-Inspired Extreme Wetting Surfaces for Biomedical Applications

Bio-Inspired Extreme Wetting Surfaces for Biomedical Applications

A Droplet‐Based High‐Throughput SERS Platform on a Droplet‐Guiding‐Track‐Engraved Superhydrophobic Substrate

Recent Developments in Artificial Super-Wettable Surfaces Based on Bioinspired Polymeric Materials for Biomedical Applications

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