Progress in low voltage reversible electrowetting with lubricated polymer honeycomb substrates

Bormashenko, Edward; Pogreb, Roman; Bormashenko, Yelena; Aharoni, Hadas; Shulzinger, Evgeny; Grinev, Roman; Rozenman, Daniel; Rozenman, Ziva

doi:10.1039/c4ra15927f

Cited by 23 publications

(20 citation statements)

References 54 publications

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“…Membranes play an important role in science and technology, such as the applications of ion exchange membranes in separation [ 1 , 2 , 3 ], wastewater treatment [ 2 , 3 , 4 ], food, and bio-technology [ 3 , 4 ]; nanoporous membranes in blood purification [ 5 ], separation and gas removal [ 6 , 7 ], virus filtration [ 8 ] and DNA/gene detection [ 9 , 10 ]; liquid crystal polymer membranes in optics, electronics, display devices, and bio-technology [ 11 , 12 , 13 , 14 ]; honeycomb films in anti-bacterial activity [ 15 , 16 ], cell/bacteria culture [ 17 , 18 ], protein adsorption [ 19 ], tissue engineering [ 20 ], lab-on-fiber technology [ 21 ], electrowetting display [ 22 ], and water/oil separation [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Breath Figure Method for Construction of Honeycomb Films

et al. 2015

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Honeycomb films with various building units, showing potential applications in biological, medical, physicochemical, photoelectric, and many other areas, could be prepared by the breath figure method. The ordered hexagonal structures formed by the breath figure process are related to the building units, solvents, substrates, temperature, humidity, air flow, and other factors. Therefore, by adjusting these factors, the honeycomb structures could be tuned properly. In this review, we summarized the development of the breath figure method of fabricating honeycomb films and the factors of adjusting honeycomb structures. The organic-inorganic hybrid was taken as the example building unit to discuss the preparation, mechanism, properties, and applications of the honeycomb films.

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Section: Introductionmentioning

confidence: 99%

Breath Figure Method for Construction of Honeycomb Films

et al. 2015

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“…When a water droplet was placed on the silicone oil, it was coated with the silicone oil, as depicted schematically in Figure 3. This wetting situation is well explained by the analysis of the spreading parameter S governing the wetting situation [30][31][32]: ; in this case, the silicone oil is expected to coat the water droplet, at least partially [23]. It should be stressed, that PDMS did not coat a water droplet completely, as shown in Figures 1, 3 We propose following mechanism involving co-occurrence of thermal and solutal Marangoni flows [34][35], driven by evaporation of a droplet and resulting in temperature and concentration gradients.…”

Section: Resultsmentioning

confidence: 99%

“…We studied the development of coffee-stain deposits, on oil-infused (impregnated) microrough substrates giving rise to a variety of fascinating wetting phenomena and, exerted to the intensive research recently [16][17][18][19][20][21][22][23][24]. Oil-infused surfaces are featured by the low contact angle hysteresis, low sliding angles and self-healing [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Paradoxical coffee-stain effect driven by the Marangoni flow observed on oil-infused surfaces

Chaniel

Frenkel

Multanen

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Formation of coffee stain deposits under evaporation of droplets containing aqueous solution of salts placed on silicone-oil impregnated substrates was observed. The formation of ring-like deposits was registered for various molar concentrations of salts for the droplets of 5-300 µl in volume. The effect occurred when the contact line was de-pinned, and the evaporation from the edge of a droplet was stopped by the silicone oil. The formation of the coffee stain deposit is related to the soluto-capillary Marangoni flow; the influence of the thermo-capillary flow taking place in parallel is negligible.

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“…Nowadays, more and more inorganic or polymeric materials are used to present dielectric layers [10,11,12]. The former is good at high dielectric constant and low driving voltage, such as SiO 2 [13], Si 3 N 4 [14], silicon nanosphere [15], and mesoporous silica [16].…”

Section: Introductionmentioning

confidence: 99%

Multiscale Interface Effect on Homogeneous Dielectric Structure of ZrO2/Teflon Nanocomposite for Electrowetting Application

et al. 2018

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Electrowetting-on-dielectric is a preferred option in practical applications of the electrowetting phenomenon but limited by dielectric and breakdown performances of the dielectric layer. In the present work, a ceramic/polymer nanocomposite as a novel dielectric layer is developed to intensify the overall electrowetting performances by multiscale interface effect. Hereinto, surface fluoro-modified ZrO2 nanoparticles (mZrO2) are dispersed well in AF 1600 matrix to form a mZrO2@AF 1600 nanocomposite. The small addition of mZrO2 improves the dielectric constant of the nanocomposite, and the experimental value is larger than the theoretical value calculated by Maxwell–Garnett model, but fits well with the Rahaman–Khastgir model. The molecular dynamics simulations with the explicit model further verify the interfacial effect. Meanwhile, double contact angle modulation and higher breakdown field strength (Eb) are obtained. For the three-layer sandwich structure, both the top and bottom AF 1600 layer decrease the surface roughness for better electrowetting reproducibility and wider wettability modulation. The Forlani–Minnaja theory related to the empirical relationship between Eb and thickness of dielectric layer fit well with the monolayer structure, but cannot be applied in multi-layer structures. A new relationship is proposed to guide the design of dielectric multi-layers with high breakdown field strength.

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Progress in low voltage reversible electrowetting with lubricated polymer honeycomb substrates

Abstract: Electrowetting of silicone oil lubricated PC + EC substrates. (A) U = 0 V; (B) U = 55 V.

Cited by 23 publications

References 54 publications

Breath Figure Method for Construction of Honeycomb Films

Breath Figure Method for Construction of Honeycomb Films

Paradoxical coffee-stain effect driven by the Marangoni flow observed on oil-infused surfaces

Multiscale Interface Effect on Homogeneous Dielectric Structure of ZrO2/Teflon Nanocomposite for Electrowetting Application

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