131 citations · 680 across the 12 of their papers we have counts for
7 papers · 1 filter
Active shape-morphing elastomeric colloids in short-pitch cholesteric liquid crystals
Julian S. Evans, Yaoran Sun, Bohdan Senyuk +4
Active elastomeric liquid crystal particles with initial cylindrical shapes are obtained by means of soft lithography and polymerization in a strong magnetic field. Gold nanocrysta…
Reconfigurable interactions and three-dimensional patterning of colloidal particles and defects in lamellar soft media
Rahul P. Trivedi, Ivan I. Klevets, Bohdan Senyuk +2
Colloidal systems find important applications ranging from fabrication of photonic crystals to direct probing of phenomena typically encountered in atomic crystals and glasses. New…
Plasmonic complex fluids of nematiclike and helicoidal self-assemblies of gold nanorods with a negative order parameter
Qingkun Liu, Bohdan Senyuk, Jianwei Tang +4
We describe a soft matter system of self-organized oblate micelles and plasmonic gold nanorods that exhibit a negative orientational order parameter. Because of anisotropic surface…
Nonlinear photoluminescence imaging of isotropic and liquid crystalline dispersions of graphene oxide
Bohdan Senyuk, Natnael Behabtu, Benjamin G. Pacheco +5
We report a visible-range nonlinear photoluminescence (PL) from graphene oxide (GO) flakes excited by near-infrared femtosecond laser light. PL intensity has nonlinear dependence o…
Shape-dependent oriented trapping and scaffolding of plasmonic nanoparticles by topological defects for self-assembly of colloidal dimers in liquid crystals
Bohdan Senyuk, Julian S. Evans, Paul J. Ackerman +6
We demonstrate scaffolding of plasmonic nanoparticles by topological defects induced by colloidal microspheres to match their surface boundary conditions with a uniform far-field a…
Three-dimensional patterning of solid microstructures through laser reduction of colloidal graphene oxide in liquid-crystalline dispersions
Bohdan Senyuk, Natnael Behabtu, Angel Martinez +6
Graphene materials and structures have become an essential part of modern electronics and photovoltaics. However, despite many production methods, applications of graphene-based st…
Optically and elastically assembled plasmonic nanoantennae for spatially resolved characterization of chemical composition in soft matter systems using surface enhanced spontaneous and stimulated Raman scattering
Haridas Mundoor, Taewoo Lee, Derek G. Gann +4
We present a method to locally probe spatially varying chemical composition of soft matter systems by use of optically controlled and elastically self-assembled plasmonic nanoanten…