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. Author manuscript; available in PMC: 2016 Nov 1.
Published in final edited form as: Eur Polym J. 2015 Feb 28;72:386–412. doi: 10.1016/j.eurpolymj.2015.02.022

Figure 4. Overview of strategies for particle encoding.

Figure 4

Shape encoding: Particles polymerized using contact lithography (A) for DNA assay (Reproduced from [33]. Copyright 2004 American Chemical Society) and (B) for enzyme assay (Reproduced from [67]. Copyright 2008 Springer). (C) Particles doped with photonic crystals. Reproduced from [50]. Copyright 2011 RSC. (D) Particles fabricated via replica molding. Reproduced from [37]. Copyright 2012 ACS. Graphical encoding: Particles polymerized using flow-lithography with (E) 2D-barcode (Reproduced from [69]. Copyright 2007 AAAS), (F) 1D-barcode (Reproduced from [71]. Copyright 2004 American Chemical Society) and (G) color-barcode (Reproduced from [38]. Copyright 2010 NPG). Spectral encoding: (H) Optical barcodes using upconverting nanocrystals. Reproduced from [81]. Copyright 2014 NPG. (I) PEGDA spheres encapsulating downconverting nanocrystals. Reproduced from [40]. Copyright 2012 RSC. (J) Quantum-dot tagged alginate microparticles. Reproduced from [65]. Copyright 2011 RSC. (K) Janus alginate microparticles encapsulating liposomes. Reproduced from [55]. Copyright 2012 ACS.