2014
DOI: 10.1002/adfm.201403051
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Magnetic Liquid Marbles: Toward “Lab in a Droplet”

Abstract: Liquid marbles exhibit great potential for use as miniature labs for small‐scale laboratory operations, such as experiment and measurement. While important progress has been made recently in exploring their applications as microreactions, “on‐line” measurement of the components inside the liquid still remains a challenge. Herein, it is demonstrated that “on‐line” detection can be realized on magnetic liquid marbles by taking advantage of their unique magnetic opening feature. By partially opening the particle … Show more

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Cited by 127 publications
(150 citation statements)
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“…[1] It does not wet any substrate because of the isolation effect of the surface particles and has been studied as a miniature container, revealing characteristics valuable in many fields, [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] such as electrochemical analysis, [5] material synthesis, [6] cell culture, [7][8][9][10] and various environmental testing, including pH, [11,12] temperature, [13] ultraviolet [14] /infrared light, [15] and chemical composition. [1] It does not wet any substrate because of the isolation effect of the surface particles and has been studied as a miniature container, revealing characteristics valuable in many fields, [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] such as electrochemical analysis, [5] material synthesis, [6] cell culture, [7]…”
Section: Doi: 101002/admi201701139mentioning
confidence: 99%
“…[1] It does not wet any substrate because of the isolation effect of the surface particles and has been studied as a miniature container, revealing characteristics valuable in many fields, [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] such as electrochemical analysis, [5] material synthesis, [6] cell culture, [7][8][9][10] and various environmental testing, including pH, [11,12] temperature, [13] ultraviolet [14] /infrared light, [15] and chemical composition. [1] It does not wet any substrate because of the isolation effect of the surface particles and has been studied as a miniature container, revealing characteristics valuable in many fields, [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] such as electrochemical analysis, [5] material synthesis, [6] cell culture, [7]…”
Section: Doi: 101002/admi201701139mentioning
confidence: 99%
“…When the magnet bar withdrew, the ferromagnetic particles would move back to the exposed surface of liquid droplet for minimization of the surface free energy. In further research of the same group, magnetic liquid marble–based “Lab in a Droplet” was devised, which could operate an integration of complicated processes, including magnetic liquid marble preparation, reversible marble opening–closing, optical detection, electrochemical detection, IR heat operation, marble collection and disposal (Figure c) . More importantly, Zhao et al replaced the ferromagnetic particles with Fe 2 O 3 ‐/silica‐nanoparticle‐incorporated dual‐wettable Janus particles .…”
Section: Ferrofluid‐assisted Fluid and Droplet Manipulationmentioning
confidence: 99%
“…Copyright 2010, Wiley‐VCH. c) Scheme of the magnetic liquid marble–based “Lab in a Droplet.” Reproduced with permission . Copyright 2014, Wiley‐VCH.…”
Section: Ferrofluid‐assisted Fluid and Droplet Manipulationmentioning
confidence: 99%
“…Techniques have been developed for manoeuvring the droplets on a planar surface. Various types of external forces, including electric, magnetic and acoustic, have been applied for droplet actuation1213141516. The actuated droplets usually wet their substrates during transport, leading to loss of liquid and substrate contamination6.…”
mentioning
confidence: 99%
“…Another technique, termed the liquid marble method, facilitates liquid transfer without the wetting of the substrate through the coating of aqueous liquid droplets with hydrophobic powders3. However, such powder encapsulation of droplets complicates their manipulation and impedes the visualization and detection of the fluid inside15. These techniques work successfully for droplets on a flat surface in air but encounter difficulties in attempts to manipulate the droplets either on an arbitrary surface or in an immiscible liquid.…”
mentioning
confidence: 99%