Hydrogel microbeads

Kumachev, A., Greener, J., Tumarkin, E., Riser, E., Zandstra, P. W, Kumacheva, E. High-throughput generation of hydrogel microbeads with varying elasticity for cell eneapsulation. Biomaterials. 2011, 32, 1477-1483. 

Quong D. Encapsulated active material immobilized in hydrogel microbeads. US Patent 6,375,968,2002. 

B.S. Mangond, V. Sreedhar, V.V. Baraskar and R.V. Kulkarni, Development and evaluation of gellan gum based hydrogel microbeads for controlled release of ketoprofen, Indian J. Nov. Drug Deliv, 1 32-35, 2009. 

Hirama, H. et ah. Hyper alginate gel microbead formation by molecular diffusion at the hydrogel/drop-let interface. Langmuir, 2013. 29(2) 519-524. 

Specific mode shape patterns are formed and components are forced to move to nodes and antinodes at resonant frequencies of the droplets and structures on which the droplets are placed. Microgels and microbeads of various sizes in a droplet were successfully assembled by excitation at various frequencies and intensities. The control over individual components is not possible however, a high number of components can be robustly manipulated. Both single- and double-layer structures (with a second assembly on top of the first assembly) were reported. The hydrogels used in the study are capable of encapsulating cells and proteins to create biological assemblies. 

Pd-TFPP in PSAN microbeads Hydrogel for both particles 405 DT,FD 0-20... 

Radiopaque microbeads made of polyacrylonitrile (PAN) hydrogel have also been evaluated in vitro and in vivo for transcatheter embolization on a swine model showing potential for future use [23[. 

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