Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acs.langmuir.2c02859

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Language：English   Publishing type：Research paper (scientific journal)  

This report describes a method to obtain multicellular shaped compartments made by lipids growing from a sponge‐like porous structure. Each compartment is several tens of micrometers in diameter and separated by membranes comprised of phospholipid and amphipathic molecules. The multi‐compartment structure spontaneously grew to a millimeter scale, driven by an ionic concentration difference between the interior and exterior environments of the sponge. These compartments can also easily incorporate hydrophilic species as a well as smaller materials such as liposomes. Additionally, we showed that mechanical squeezing of the sponge was also effective in producing multicellular bodies. These simple methods to obtain large‐scale multicellular compartment of lipid membrane will help future designs and trials of chemical communications on artificial cells.

DOI： 10.1002/syst.202200006

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Language：English  

DOI： 10.1007/978-3-642-41610-1_209-1

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jhazmat.2020.122625

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acs.langmuir.0c00808

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Language：English   Publishing type：Research paper (scientific journal)  

<jats:title>Abstract</jats:title><jats:p>Research on superwetting surfaces/coatings that artificially mimic biological surfaces/systems has a long history, and still garners significant worldwide interest as it is expected to provide superior solutions to conventional engineering approaches that attempt to solve challenges facing mankind. To broaden the utility of these superwetting surfaces/coatings, there is a strong demand for these surfaces to exhibit multiple practical functionalities. Here, the progress being made in multifunctional surfaces with superwettability is explored. In each section, state‐of‐the‐art works are summarized and the concepts, materials, processes, and the effects of both physical (smooth or structured surfaces) and chemical (low or high surface energies) factors on the resulting surface are described. Finally, the outlook of this prospective research field is considered, and its future directions briefly discussed, with a focus on preserving longevity in both functionality and structural integrity to produce truly useful biomimetic surfaces/coatings.</jats:p>

DOI： 10.1002/adfm.201907772

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Language：English   Publishing type：Research paper (scientific journal)  

<jats:title>Abstract</jats:title><jats:p>The fabrication of multifunctional polymeric Janus colloids that display catalytically driven propulsion, change their size in response to local variations in pH, and vary cargo release rate is demonstrated. Systematic investigation of the colloidal trajectories reveals that in acidic environments the propulsion velocity reduces dramatically due to colloid swelling. This leads to a chemotaxis‐like accumulation for ensembles of these responsive particles in low‐pH regions. In synergy with this chemically defined accumulation, the colloids also show an enhancement in the release rate of an encapsulated cargo molecule. Together, these effects result in a strategy to harness catalytic propulsion for combined autonomous transport and cargo release directed by a chemical stimulus, displaying a greater than 30 times local cargo‐accumulation enhancement. Lactic acid can be used as the stimulus for this behavior, an acid produced by some tumors, suggesting possible eventual utility as a drug‐delivery method. Applications for microfluidic transport are also discussed.</jats:p>

DOI： 10.1002/adfm.202000324

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Language：English   Publishing type：Research paper (scientific journal)  

<p>Centimeter-sized flat-headed push pin with photothermal properties can be moved on a water surface by a simple near-infrared laser.</p>

DOI： 10.1039/c9ra01417a

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Language：English   Publishing type：Research paper (scientific journal)  

<jats:title>Abstract</jats:title><jats:p>The field of active colloids is attracting significant interest to both enable applications and allow investigations of new collective colloidal phenomena. One convenient active colloidal system that has been much studied is spherical Janus particles, where a hemispherical coating of platinum decomposes hydrogen peroxide to produce rapid motion. However, at present producing these active colloids relies on a physical vapor deposition (PVD) process, which is difficult to scale and requires access to expensive equipment. In this work, it is demonstrated that Pickering emulsion masking combined with solution phase metallization can produce self‐motile catalytic Janus particles. Comparison of the motion and catalytic activity with PVD colloids reveals a higher catalytic activity for a given thickness of platinum due to the particulate nature of the deposited coating. This Pickering emulsion based method will assist in producing active colloids for future applications and aid experimental research into a wide range of active colloid phenomena.</jats:p>

DOI： 10.1002/advs.201700528

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Language：English  

DOI： 10.1142/9781786343130_0008

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.3791/54247

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Language：English   Publishing type：Research paper (scientific journal)  

We demonstrate that glancing angle metal deposition can produce autonomous catalytic swimming colloids with well defined angular velocity.

DOI： 10.1039/c5sm01323b

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