Journal
SMALL
Volume 12, Issue 28, Pages 3788-3793Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201601350
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Funding
- National Natural Science Foundation of China [51373197, 21422407]
- Program for New Century Excellent Talents in University [NCET-12-0530]
- Outstanding Innovative Talents Cultivation Funded Programs of Renmin University of China
- Open Project of the State Key Laboratory for Supramolecular Structure and Materials [SKLSSM2015020]
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Great efforts have been devoted to the control of phase separation between blended polymers in terms of the advantages for engineering functional topologies. A simple and straightforward pathway through roughness transfer printing (RTP) is proposed to realize the control of polymer phase separation. The additional roughness difference, which is introduced by trace agarose transferred from a hydrogel stamp, offers a great effect on the rate of nucleation and coalescence orientation of polymethylmethacrylate (PMMA) protrusions grown from a polydimethylsiloxane (PDMS) network. Using a particular topography of agarose stamp and a proper growth time in toluene atmosphere, a 2D microlens array with high uniformity is obtained that shows great potential for optical applications. Moreover, the control of polymer phase separation was successfully extended to the collection and identification of fingerprints with a high degree of replication.
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