Temperature- and/or pH-Responsive Surfaces with Controllable Wettability: From Parahydrophobicity to Superhydrophilicity

Frysali, Melani A.; Anastasiadis, Spiros H.

doi:10.1021/acs.langmuir.7b02098

Cited by 23 publications

(19 citation statements)

References 79 publications

(143 reference statements)

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“…However, with enough long heating process, the reduction of water would definitely happen. Due to the flexible tunability of temperature responsive materials, temperature E‐LIS with reversibly adjustable wettability have become a hot topic research . In 2013, Yao et al first developed a temperature E‐LIS based on n‐paraffin infused organogel, as shown in Figure a.…”

Section: Design and Fabrication Of E‐lismentioning

confidence: 99%

External Stimuli Responsive Liquid‐Infused Surfaces Switching between Slippery and Nonslippery States: Fabrications and Applications

Lou

Huang

Yang

et al. 2020

Adv Funct Materials

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Surfaces with controllable liquid wettability and related functions have gained increasing attention from interfacial scientists due to the high demand of fundamental research and practical applications. Inspired by pitch plant's excellent liquid repellency, external stimuli responsive lubricant‐infused surfaces switching between slippery state and nonslippery state under external stimuli (E‐LIS) have been developed by introducing external stimuli responsive materials as substrates, lubricants, or repellent liquids. This progress report is focused on recent development of E‐LIS. First, design strategy and fabrication of E‐LIS upon external stimuli exposure, including stress, electrical field, magnetic field, and temperature, is summarized. Then, emerging interfacial applications of E‐LIS, such as microreactors, pipetting devices, fog collection devices, and so on, are highlighted. In addition, remaining challenges and future prospects are provided.

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Section: Design and Fabrication Of E‐lismentioning

confidence: 99%

External Stimuli Responsive Liquid‐Infused Surfaces Switching between Slippery and Nonslippery States: Fabrications and Applications

Lou

Huang

Yang

et al. 2020

Adv Funct Materials

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“…In addition to thermoresponsive polymers, which have been used extensively to fabricate the thermoresponsive surfaces, thermoresponsive inorganic oxides can also be used to get reversible thermoresponsive wetting transition [37,38]. Due to the fast switching wettability in a narrow temperature range, thermoresponsive surfaces offer promising applications in areas including the thermally driven movement of liquid, oil-water separation, and switchable adhesion on the surface [39][40][41][42][43][44].…”

Section: Temperature-responsive Surfacesmentioning

confidence: 99%

Smart Surfaces with Tunable Wettability

Sharma¹,

Khare²

2020

21st Century Surface Science - A Handbook

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Modification of surface wettability (ranging from complete wetting to complete non-wetting) of various surfaces is often required in many applications. Conventionally, it is done using a coating of suitable materials as per the requirement. In this approach, the old coating needs to be replaced every time by a new appropriate one. Alternatively, smart responsive surfaces can show tunable wettability with external stimulus. Electric field, temperature, light, pH, mechanical strain, etc. can be effectively used as external stimuli, and a suitable coating can be incorporated, which responses to the respective stimulus. These surfaces can be used to tune the surface wettability to any extent based on the magnitude of the stimulus. The primary role of the external stimulus is to vary the liquid-solid interfacial energy, which subsequently changes the surface wettability. The biggest advantage of this approach is that the surface wettability can be reversibly tuned. Each of the techniques mentioned above has many advantages along with certain limitations, and the combination of advantages and limitations helps users to choose the right technique for their work. Many recent studies have used this approach to quantify the tuning of the surface wettability and have also demonstrated its potential in various applications.

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“…In this paper, an open flow reactor (OFR) with wetting contrast has been successfully manufactured by direct laser sintering. [ 16 ] Laser sintering is an emerging technology for designing patterns on the surface of various materials such as plastic, metal, glass, ceramic, and wood. It is a mask‐less process and can write arbitrary geometric figures directly.…”

Section: Introductionmentioning

confidence: 99%

Open Flow Reactors Prepared by Laser Sintering

Guo

Yang

et al. 2021

Adv Materials Inter

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channels have one or more sides exposed to the atmosphere, which can provide the benefits for the simplicity of manufacturing, the directness of cleaning, surface modification, and deposition of catalysts. [8] These systems can also overcome the typical problems of traditional microfluidics, such as the risk of channel clogging, bulky equipment, and flow disturbances caused by bubbles. Open channels in reactors can use different geometries to achieve fluid confinement, [9] which are divided into two categories: (i) physical confinement [10] and (ii) wettability contrast confinement. [11] In the first method, a rectangular or triangular (cross-section) channel with an open on one side is used to restrict and manipulate the fluid. A channel can be formed by two opposing vertical walls; or use the narrow sides of a solid surface. In the second case, the wettability contrast constraint means that hydrophilic and hydrophobic regions are made in a specific region. And the fluid can flow in one region restricted by the virtual channel wall composed of the opposite wettability. Hydrophilic and hydrophobic regions can be formed by surface modification or oxidation, such as plasma irradiation. [12] Since the second method for the construction of the open channels is more accessible and applicable for the surface of different materials, it attracts lots of interest among chemists these years. For the successful control of surface wettability, many physical and chemical technologies have been applied, including photolithography, [13] inkjet systems, [14] UV/ozone irradiation, [15] or plasma treatment. [12] However, there are some disadvantages to the above methods. Modification with organic molecules needs lots of solvents. Photolithography is expensive. Surface wettability caused by plasma treatment and ultraviolet irradiation quickly changes over time. Plasma treatment lacks the selectivity of regions. More important, it is difficult to deposit catalysts in the channel at the same time. Therefore, it is still a challenge to develop an efficient, low-toxicity, low-cost, and simple way to realize the region's selective wettability and chemical reactivity for the fluid channel. In this paper, an open flow reactor (OFR) with wetting contrast has been successfully manufactured by direct laser sintering. [16] Laser sintering is an emerging technology for designing patterns on the surface of various materials such as plastic, metal, glass, ceramic, and wood. It is a mask-less process and can write arbitrary geometric figures directly. The laser energy can be accurately transmitted to the required location with good spatial resolution. Only the place irradiated by the laser will change its physical form or chemical composition. Therefore, laser sintering technology has broad application prospects in the design and manufacture of microreactors. [17] The open flow reactor is a kind of reactor with at least one side open to the atmosphere. Open channels have the advantages of simple surface modification, direct cleaning, and relative...

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Temperature- and/or pH-Responsive Surfaces with Controllable Wettability: From Parahydrophobicity to Superhydrophilicity

Cited by 23 publications

References 79 publications

External Stimuli Responsive Liquid‐Infused Surfaces Switching between Slippery and Nonslippery States: Fabrications and Applications

External Stimuli Responsive Liquid‐Infused Surfaces Switching between Slippery and Nonslippery States: Fabrications and Applications

Smart Surfaces with Tunable Wettability

Open Flow Reactors Prepared by Laser Sintering

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