Publications

2017

Shields, C.W.; Velev, O.D. The Evolution of Active Particles: Toward Externally Powered Self-Propelling and Self-Reconfiguring Particle Systems. Chem 2017 3,4  539-559. DOI: 10.1016/j.chempr.2017.09.006.

Han, K.; Shields, C.W., IV; Diwakar, N.M.; Bharti, B.; López, G.P.; Velev, O.D. Sequence-encoded colloidal origami and microbot assemblies from patchy magnetic cubes. Science Advances 2017. DOI: 10.1126/sciadv.1701108.

Roh, S.; Parekh, D.P.; Bharti, B.; Stoyanov, S.D.; Velev, O.D. 3D Printing by multiphase silicone/water capillary inks. Advanced Materials 2017. DOI: 10.1002/adma.201701554.

Chang, D.; Fox, R.; Hicks, E.; Ferguson, R.; Chang, K.; Osborne, D.; Hu, W.; Velev, O.D. Investigation of interfacial properties of pure and mixed poloxamers for surfactant-mediated shear protection of mammalian cells. Colloids and Surfaces B: Biointerfaces 2017, 156, 710-716. DOI: 10.1016/j.colsurfb.2017.05.040.

Shay, T., Dickey, M.D., Velev, O.D. Hydrogel-enabled osmotic pumping for microfluidics: towards wearable human-device interfaces. Lab on a Chip 2017, 17(4):710-716. DOI: 10.1039/c6lc01486k.

2016

Bharti, B.; Rutkowski, D.; Han, K.; Kumar, A.U.; Hall, C.K.; Velev, O.D. Capillary Bridging as a Tool for Assembling Discrete Clusters of Patchy Particles. Journal of the American Chemical Society 2016, 138 (45), 14948-14953.

Bharti, B.; Kogler, F.; Hall, C.K.; Klapp, S.H.; Velev, O.D. Multidirectional colloidal assmebly in concurrent electric and magnetic fields. Soft Matter 2016, 37 (12), 7747-7758.

Richter, A.P.; Bharti, B.; Armstrong, H.B.; Brown, J.S.; Plemmons, D.; Paunov, V.N.; Stoyanov, S.D.; Velev, O.D. Synthesis and Characterization of Biodegradable Lignin Nanoparticles with Tunable Surface Properties. Langmuir 2016, 32 (25), 6468-6477.

Morales, D.; Podolsky, I.; Mailen, R.W.; Shay, T.; Dickey, M.D.; Velev, O.D. Ionoprinted Multi-Responsive Hydrogel Actuators. Micromachines 2016, 7 (6), 98.

Morales, D.; Bharti, B.; Dickey, M.D.; Velev, O.D. Bending of Responsive Hydrogel Sheets Guided by Field-Assembled Microparticle Endoskeleton Structures. Small 2016.

2015

Mertens, B.S.; Velev, O.D. Characterization and control of surfactant-mediated Norovirus interactions. Soft Matter 2015, 11, 8621-8631.

Bharti, B.; Fameau, A.-L.; Rubinstein, M.; Velev, O.D. Nanocapillarity-mediated Magnetic Assembly of Nanoparticles into Ultraflexible Filaments and Reconfigurable Networks. Nat. Mater. 2015. DOI: 10.1038/nmat4364.

Richter, A.P.; Brown, J.; Bharti, B.; Wang, A.; Gangwal, S.; Houck, K.; Hubal, E.A.; Paunov, V.N.; Stoyanov, S.D.; Velev, O.D. An environmentally benign antimicrobial nanoparticle based on a silver-infused lignin core. Nature Nanotech. 2015

Smoukov, S.; Tian, T.; Vitchuli, N.; Gangwal, S.; Geisen, P.; Wright, M.; Shim, E.; Marquez, M.; Fowler, J.; Velev, O.D. Scalable Liquid Shear-Driven Fabrication of Polymer Nanofibers. Advanced Materials 2015, 27, 16, 2642-2647.

Bharti, B.; Velev, O.D. Multi-directional, Multicomponent Electric Field Driven Assembly of Complex Colloidal Chains. Z. Phys. Chem. 2015. DOI:10.1515/zpch-2014-0543.

Kleinert, J.; Srinivasan, V.; Rival, A.; Delattre, C.; Velev, O.D. The dynamics and stability of lubricating oil films during droplet transport by electrowetting in microfluidic devices. Biomicrofluidics 2015, 9, 034104.

Bharti, B.; Fameau, A.-L.; Velev, O. D. Magnetophoretic assembly of flexible nanoparticles/lipid microfilaments. Faraday Discuss. 2015, 181, 437.

Bharti, B.; Velev, O. D. Assembly of Reconfigurable Colloidal Structures by Multidirectional Field-Induced Interactions. Langmuir 2015, 31, 7897.

2014

Velikov, K.P.; Velev, O. D. Synthesis and Novel Applications of Biopolymer and Biologically Derived Particles. Curr. Opinion Colloid Interface Sci. 2014, 19, 381-382.

Sharma, R.; Blackburn, T.; Hu, W.; Wiltberger, K.; Velev, O.D. On-chip microelectrode impedance analysis of mammalian cell viability during biomanufacturing. Biomicrofluidics. 2014, 8, 054108.

Lam, S.; Velikov, K.P.; Velev, O. D. Pickering Stabilization of Foams and Emulsions with Particles of Biological Origin. Curr. Opinion Colloid Interface Sci.2014, 19, 490-500.

Bharti, B.; Findenegg, G.H.; Velev, O. D. Analysis of the Field-Assisted Permanent Assembly of Oppositely Charged Particles. Langmuir 2014, 30, 6577-6587.

Morales, D.; Palleau, E.; Dickey, M. D.,; Velev, O. D. Electro-actuated hydrogel walkers with dual responsive legs. Soft Matter 2014, 10, 1337-1348.

2013

Velev, O. D. Patchy nanoparticles: Curvature makes a difference. Nature Nanotechnol. 2013, 8, 620-621.

Koo, H.-J.; Velev, O. D. Regenerable photovoltaic devices with a hydrogel-embedded microvascular network. Sci. Rep. (Nature) 2013, 3, 2357(1-6).

Palleau, E.; Morales, D.; Dickey, M. D.; Velev, O. D. Reversible patterning and actuation of hydrogels by electrically assisted ionoprinting. Nature Comm.2013, 4, 2257(1-7).

Shields, C. W.; Zhu, S.; Yang, Y.; Bharti, B,; Liu, J.; Yellen, B. B.; Velev, O. D.; Lopez, G. P. Field-directed assembly of patchy anisotropic microparticles with defined shape. Soft Matter 2013, 9, 9219-9229.

Fameau, A.-L.; Lam, S.; Velev, O. D. Multi-stimuli responsive foams combining particles and self-assembling fatty acids. Chem. Sci. 2013, 4, 3874-3881.

Blanco, E.; Lam, S.; Smoukov, S. K.; Velikov, K. P.; Khan, S. A.; Velev, O. D. Stability and viscoelasticity of magneto-Pickering foams. Langmuir 2013, 29, 10019-10027.

Jenkins, J. S.; Flickinger, M. C.; Velev, O. D. Engineering Cellular Photocomposite Materials Using Convective Assembly. Materials 2013, 6(5), 1803-1825.

Koo, H.-J.; Velev, O. D. Ionic current devices—Recent progress in the merging of electronic, microfluidic, and biomimetic structures. Biomicrofluidics2013, 7, 031501(1-10).

Koo, H.-J.; Velev, O. D. Biomimetic photocatalytic reactor with a hydrogel-embedded microfluidic network. J. Mater. Chem. A 2013, 1, 11106-11110.

Schmidle, H.; Jaeger, S.; Hall, C. K.; Velev, O. D.; Klapp, S. H. L. Two-dimensional colloidal networks induced by a uni-axial external field. Soft Matter2013, 9, 2518-2524.

2012

Bharti, B.; Findenegg, G. H.; Velev, O. D. Co-assembly of oppositely charged particles into linear clusters and chains of controllable length. Sci. Rep. (Nature) 2012, 2, 1004(1-4).

Frangville, C.; Rutkevicius, M.; Richter, A. P.; Velev, O. D.; Stoyanov, S. D.; Paunov, V. N. ChemPhysChem 2012, 13, 4235–4243.

Ucar, A. B.; Velev, O. D. Microfluidic elastomer composites with switchable Vis-IR transmittance. Soft Matter 2012, 8, 11232-11235.

Gupta, S.; Kilpatrick,P. K.; Melvin, E. M.; Velev, O. D. On-chip latex agglutination immunoassay readout by electrochemical impedance spectroscopy. Lab on a Chip 2012, 12, 4279-4286.

Sharma, R.; Chang, S.-T.; Velev, O. D. Gel-based self-propelling particles get programmed to dance. Langmuir 2012, 28, 10128−10135.

Jenkins, J. S.; Flickinger, M. C.; Velev, O. D. Deposition of Composite Coatings from Particle-Particle and Particle-Yeast Blends by Convective-Sedimentation Assembly. Journal of Colloid and Interface Science 2012, 380, 192-200.

Gosse, J. L.; Chinn, M. S.; Grunden, A. M.; Bernal, O.L.; Jenkins, J.S; Yeager, C.; Kosourov, S.; Seibert, M.; Flickinger, M. C. A versatile method for preparation of hydrated microbial-latex biocatalytic coatings for gas absorption and gas evolution. Journal of Industrial Microbiology & Biotechnology 2012, 39, 1269–1278.

Schmidle, H.; Hall, C. K.; Velev, O. D.; Klapp, S. H. L. Phase diagram of two-dimensional systems of dipole-like colloids. Soft Matter 2012, 8, 1521-1531.

Kleinert, J.; Kim, S., Velev, O. D. Electric-field-controlled flow in nanoscale-thin wetting films. Langmuir 2012, 28, 3037−3044.

So,J.-H.; Koo,H.-J.; Dickey, M. D.; Velev, O. D.; Ionic current rectification in soft-matter diodes with liquid-metal electrodes. Advanced Functional Materials 2012, 22, 625–631.

2011

Ashley, C. E.; Dunphy, D. R.; Jiang, Z.; Carnes, E. C.; Yuan, Z.; Petsev, D. N.; Atanassov, P. B.; Velev, O. D.; Sprung, M.; Wang, J.; Peabody, D. S.; Brinker, C. J. 1. Convective assembly of 2D lattices of virus-like particles visualized by in-situ grazing-incidence small-angle X-ray scattering. Small 2011, 7, No. 8, 1043–1050.

Hoeger, I.; Rojas, O. J.; Efimenko, K.; Velev, O. D.; Kelley, S. S. Ultrathin film coatings of aligned cellulose nanocrystals from a convective-shear assembly system and their surface mechanical properties. Soft Matter 2011, 7, 1957–1967.

Koo, H.-J.; So, J.-H.; Dickey, M. D.; Velev, O. D. Towards All-Soft Matter Circuits: Prototypes of Quasi-Liquid Devices with Memristor Characteristics.Advanced Materials 2011, 23, 3559–3564.

Koo, H.-J.; Chang, S. T.; Slocik, J. M.; Naik, R. R.; Velev, O. D. Aqueous soft matter based photovoltaic devices. Journal of Materials Chemistry 2011, 21, 72–79.

Lam, S.; Blanco, E.; Smoukov, S.; Velikov, K. P.; Velev, O. D. Magnetically Responsive Pickering Foams. Journal of the American Chemical Society2011, 133, 13856–13859.

Melvin, E. M.; Moore, B. R.; Gilchrist, K. H.; Grego, S.; Velev, O. D. On-chip collection of particles and cells by AC electroosmotic pumping and dielectrophoresis using asymmetric microelectrodes. Biomicrofluidics 2011, 5, 034113.

2010

Brandy, M.L.; Cayre, O.J.; Fakhrullin, R.F.; Velev, O.D.; Paunov, V.N. Directed assembly of yeast cells into living celloidosomes by bubble templating. Soft Matter 2010, 6, 3494–3498.

Koo, H.-J.; Chang, S. T.; Velev, O. D. Ion-current diode with aqueous gel/SiO2 nanofilm interfaces. Small 2010, 6, 1393–1397.

Kleinert, J.; Kim, S.; Velev, O. D. Electric-field-assisted convective assembly of colloidal crystal coatings. Langmuir 2010, 26, 10380–10385.

Fakhrullin, R. F.; Brandy, M.-L.; Cayre, O. J.; Velev, O. D.; Paunov, V. N. Live celloidosome structures based on the assembly of individual cells by colloid interactions. Physical Chemistry Chemical Physics 2010, 12, 11912–11922.

Gangwal, S.; Pawar, A.; Kretzschmar, I.; Velev, O. D. Programmed assembly of metallodielectric patchy particles in external AC electric fields. Soft Matter 2010, 6, 1413–1418.

Gupta, S.; Alargova, R. G.; Kilpatrick, P. K.; Velev, O. D. On-chip dielectrophoretic coassembly of live cells and particles into responsive biomaterials. Langmuir 2010, 26, 3441–3452.

Goyal, A.; Hall, C. K.; Velev, O. D. Bicontinuous gels formed by self-assembly of dipolar colloid particles. Soft Matter 2010, 6, 480-484.

Goyal, A.; Hall, C. K.; Velev, O. D. Self-assembly in binary mixtures of dipolar colloids: Molecular dynamics simulations. Journal of Chemical Physics2010, 133, 064511/1–10.

Rastogi, V.; Velikov, K. P.; Velev, O. D. Microfluidic characterization of sustained solute release from porous supraparticles. Physical Chemistry Chemical Physics 2010, 12, 11975–11983.

Rastogi, V.; Garcia, A. A.; Marquez, M.; Velev, O. D. Anisotropic particle synthesis inside droplet templates on superhydrophobic surfaces. Macromolecular Rapid Communications 2010, 31, 190–195.

2009

Kim, S.; Barraza, H.; Velev, O. D. Intense and selective coloration of foams stabilized with functionalized particles. Journal of Materials Chemistry 2009, 19, 7043–7049.

Chang, S. T.; Uçar, A. B.; Swindlehurst, G. R.; Bradley, R. O.; Renk, F. J.; Velev, O. D. Materials of controlled shape and stiffness with photocurable microfluidic endoskeleton. Advanced Materials 2009, 21, 2803–2807.

Jerrim, L. B.; Velev, O. D. Deposition of coatings from live yeast cells and large particles by “convective-sedimentation” assembly. Langmuir 2009, 25, 5692–5702.

Velev, O. D.; Gupta, S. Materials fabricated by micro- and nanoparticle assembly – The challenging path from science to engineering. Advanced Materials2009, 21, 1897–1905.

Smoukov, S. K.; Gangwal, S.; Marquez, M.; Velev, O. D. Reconfigurable responsive structures assembled from magnetic Janus particles. Soft Matter2009, 5, 1285–1292.

Velev, O. D.; Gangwal, S.; Petsev, D. N. Particle-localized AC and DC manipulation and electrokinetics. Annual Reports on the Progress of Chemistry, Section C: Physical Chemistry 2009, 105, 213–246.

2008

Rastogi, V.; Melle, S.; Calderon, O. G.; Garcia, A. A.; Marquez, M.; Velev, O. D. Synthesis of light-diffracting assemblies from microspheres and nanoparticles in droplets on a superhydrophobic surface. Advanced Materials 2008, 20, 4263–4268.

Gangwal, S.; Cayre, O. J.; Velev, O. D. Dielectrophoretic assembly of metallodielectric Janus particles in AC electric fields. Langmuir 2008, 24, 13312–13320.

Budhlall, B. M.; Marquez, M.; Velev, O. D. Microwave, photo- and thermally responsive PNIPAm-gold nanoparticle microgels. Langmuir 2008, 24, 11959–11966.

Wege, H. A.; Kim, S.; Paunov, V. N.; Zhong, Q. X.; Velev, O. D. Long-term stabilization of foams and emulsions with in-situ formed microparticles from hydrophobic cellulose. Langmuir 2008, 24, 9245–9253.

Gupta, S.; Alargova, R. G.; Kilpatrick, P. K.; Velev, O. D. On-chip electric field driven assembly of biocomposites from live cells and functionalized particles. Soft Matter 2008, 4, 726–730.

Goyal, A.; Hall, C. K.; Velev, O. D. Phase diagram for stimulus-responsive materials containing dipolar colloidal particles. Physical Review E 2008, 77, 031401.

Gangwal, S.; Cayre, O. J.; Bazant, M. Z.; Velev, O. D. Physical Review Letters 2008, 100, 058302.

Kuncicky, D. M.; Velev, O. D. Surface-guided templating of particle assemblies inside drying sessile droplets. Langmuir 2008, 24, 1371–1380.

Chang, S. T. Beaumont, E. Petsev, D. N. Velev, O. D. Remotely powered distributed microfluidic pumps and mixers based on miniature diodes. Lab on a Chip 2008, 8, 117–124.

2007

Rastogi, V.; Velev, O. D. Development and evaluation of realistic microbioassays in freely suspended droplets on a chip. Biomicrofluidics 2007, 1, 014107.

Wege, H. A. Dyab, A. K. F.; Velev, O. D.; Paunov, V. N. Fabrication of magnetically-functionalized lens- and donut-shaped microparticles by a surface-formation technique. Physical Chemistry Chemical Physics 2007, 9, 6300–6303.

Prevo, B. G.; Kuncicky, D. M.; Velev, O. D. Engineered deposition of coatings from nano- and micro-particles: A brief review of convective assembly at high volume fraction. Colloids and Surfaces A: Physicochemical and Engineering Aspects 2007, 311, 2–10.

Cayre, O. J.; Chang, S. T.; Velev, O. D. Polyelectrolyte diode: Nonlinear current response of a junction between aqueous ionic gels. Journal of the American Chemical Society 2007, 129, 10801–10806.

Yuan, Z. Petsev, D. N., Prevo, B. G.; Velev, O. D.; Atanassov, P. Two-dimensional nanoparticle arrays derived from ferritin monolayers. Langmuir 2007, 23, 5498–5504.

Gupta, S.; Huda, S.; Kilpatrick, P. K.; Velev, O. D. Characterization and optimization of gold nanoparticle-based silver-enhanced immunoassays. Analytical Chemistry 2007, 79, 3810–3820.

Zhong, Q. X.; Daubert, C. R.; Velev, O. D. Physicochemical variables affecting the rheology and microstructure of rennet casein gels. Journal of Agricultural and Food Chemistry 2007, 55, 2688–2697.

Chang, S. T.; Paunov, V. N.; Petsev, D. N.; Velev, O. D. Remotely powered self-propelling particles and micropumps based on miniature diodes. Nature Materials 2007, 6, 235–240.

Prevo, B. G.; Hon, E. W.; Velev, O. D. Assembly and characterization of colloid-based antireflective coatings on multicrystalline silicon solar cells. Journal of Materials Chemistry 2007, 17, 791–799.

Kuncicky, D. M.; Bose, K.; Costa, K. D.; Velev, O. D. Sessile droplet templating of miniature porous hemispheres from colloid crystals. Chemistry of Materials 2007, 19, 141–143.

2006

Kuncicky, D. M.; Naik, R. R.; Velev, O. D. Rapid deposition and long-range alignment of nanocoatings and arrays of electrically conductive wires from tobacco mosaic virus. Small 2006, 2, 1462–1466.

Velev, O. D.; Bhatt, K. H. On-chip micromanipulation and assembly of colloidal particles by electric fields. Soft Matter 2006, 2, 738–750.

Koo, H. Y.; Chang, S. T. Choi, W. S.; Park, J. H.; Kim, D. Y., Velev, O. D. Emulsion-based synthesis of reversibly swellable, magnetic nanoparticle-embedded polymer microcapsules. Chemistry of Materials 2006, 18, 3308–3313.

Velev, O. D. Self-assembly of unusual nanoparticle crystals. Science 2006, 312, 376–377.

Kuncicky, D. M.; Prevo, B. G.; Velev, O. D. Controlled assembly of SERS substrates templated by colloidal crystal films. Journal of Materials Chemistry2006, 16, 1207–1211.

Chang, S. T.; Velev, O. D. Evaporation-induced particle microseparations inside droplets floating on a chip. Langmuir 2006, 22, 1459–1468.

Alargova, R. G.; Paunov, V. N.; Velev, O. D. Formation of polymer microrods in shear flow by emulsification – Solvent attrition mechanism. Langmuir2006, 22, 765–774.

2005

Prevo, B. G.; Hwang, Y; Velev, O. D. Convective assembly of antireflective silica coatings with controlled thickness and refractive index. Chemistry of Materials 2005, 17, 3642–3651.

Bhatt, K. H.; Grego, S.; Velev, O. D. An AC electrokinetic technique for collection and concentration of particles and cells on patterned electrodes. Langmuir 2005, 21, 6603–6612.

Kuncicky, D. M.; Christesen, S. D.; Velev, O. D. Role of the micro- and nanostructure in the performance of surface-enhanced Raman scattering substrates assembled from gold nanoparticles. Applied Spectroscopy 2005, 59, 401–409.

Finkel, N. H.; Prevo, B. G., Velev, O. D.; He. L. Ordered silicon nanocavity arrays in surface-assisted desorption/ionization mass spectrometry. Analytical Chemistry 2005, 77, 1088–1095.

Millman, J. R.; Bhatt, K. H.; Prevo, B. G.; Velev, O. D. Anisotropic particle synthesis in dielectrophoretically controlled microdroplet reactors. Nature Materials 2005, 4, 98–102.

Prevo, B. G.; Fuller, J. C.; Velev, O. D. Rapid deposition of gold nanoparticle films with controlled thickness and structure by convective assembly. Chemistry of Materials 2005, 17, 28–35.

2004

Alargova, R. G.; Warhadpande, D. S.; Paunov, V. N.; Velev, O. D. Foam superstabilization by polymer microrods. Langmuir 2004, 20, 10371–10374.

Alargova, R. G.; Bhatt, K. H.; Paunov, V. N.; Velev, O. D. Scalable synthesis of a new class of polymer microrods by a liquid-liquid dispersion technique. Advanced Materials 2004, 16, 1653–1657.

Zhong, Q. X.; Daubert, C. R.; Velev, O. D. Cooling effects on a model rennet casein gel system: Part II. Permeability and microscopy. Langmuir 2004, 20, 7406–7411.

Zhong, Q. X.; Daubert, C. R.; Velev, O. D. Cooling effects on a model rennet casein gel system: Part I. Rheological characterization. Langmuir 2004, 20, 7399–7405.

Noble, P. F.; Cayre, O. J.; Alargova, R. G.; Velev, O. D.; Paunov, V. N. Fabrication of “hairy” colloidosomes with shells of polymeric microrods. Journal of the American Chemical Society 2004, 126, 8092–8093.

Prevo, B. G.; Velev, O. D. Controlled, rapid deposition of structured coatings from micro- and nanoparticle suspensions. Langmuir 2004, 20, 2099–2107.

Bhatt, K. H.; Velev, O. D. Control and modeling of the dielectrophoretic assembly of on-chip nanoparticle wires. Langmuir 2004, 20, 467–476.

2003

Velev, O. D.; Prevo, B. G.; Bhatt, K. H. On-chip manipulation of free droplets. Nature 2003, 426, 515–516.

Cayre, O. J.; Paunov, V. N.; Velev, O. D. Fabrication of asymmetrically coated colloid particles by microcontact printing techniques. Journal of Materials Chemistry 2003, 13, 2445–2450.

Cayre, O. J.; Paunov, V. N.; Velev, O. D. Fabrication of dipolar colloid particles by microcontact printing. Chemical Communications 2003, 2296–2297.

Tang, J.; Gao, B.; Geng, H. Z.; Velev, O. D.; Qin, L. C.; Zhou, O. Assembly of ID nanostructures into sub-micrometer diameter fibrils with controlled and variable length by dielectrophoresis. Advanced Materials 2003, 15, 1352–1355.