1.8k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of Colorado BoulderUS112 papers
- Colorado School of MinesUS59 papers
- King's College LondonGB30 papers
- Lawrence Berkeley National LaboratoryUS28 papers
- Fudan UniversityCN17 papers
- Radboud University NijmegenNL15 papers
- Stanford UniversityUS15 papers
- University of MinnesotaUS15 papers
- University of California, BerkeleyUS14 papers
- Colorado State UniversityUS13 papers
- North Carolina State UniversityUS12 papers
- Princeton UniversityUS12 papers
35 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…
Two-dimensional skyrmions and other solitonic structures in confinement-frustrated chiral nematics
Paul J. Ackerman, Rahul P. Trivedi, Bohdan Senyuk +2
We explore spatially localized solitonic configurations of a director field, generated using optical realignment and laser-induced heating, in frustrated chiral nematic liquid crys…
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…
Edge pinning and transformation of defect lines induced by faceted colloidal rings in nematic liquid crystals
Bohdan Senyuk, Qingkun Liu, Ye Yuan +1
Nematic colloids exhibit a large diversity of topological defects and structures induced by colloidal particles in the orientationally ordered liquid crystal host fluids. These def…
Nematic liquid crystal boojums with handles on colloidal handlebodies
Qingkun Liu, Bohdan Senyuk, Mykola Tasinkevych +1
Topological defects that form on surfaces of ordered media, dubbed boojums, are ubiquitous in superfluids, liquid crystals (LCs), Langmuir monolayers, and Bose-Einstein condensates…
Topological colloids
Bohdan Senyuk, Qingkun Liu, Sailing He +4
Abundant in nature, colloids also find increasingly important applications in science and technology, ranging from direct probing of kinetics in crystals and glasses to fabrication…
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…
Colloidal spirals in nematic liquid crystals
Bohdan Senyuk, Manoj B. Pandey, Qingkun Liu +2
One of the central experimental efforts in nematic colloids research aims to explore how the interplay between the geometry of particles along with the accompanying nematic directo…
Geometry-guided colloidal interactions and self-tiling of elastic dipoles formed by truncated pyramid particles in liquid crystals
Bohdan Senyuk, Qingkun Liu, Ephraim Bililign +2
The progress of realizing colloidal structures mimicking natural forms of organization in condensed matter is inherently limited by the availability of suitable colloidal building…
Elastic interactions between colloidal microspheres and elongated convex and concave nanoprisms in nematic liquid crystals
Bohdan Senyuk, Ivan I. Smalyukh
We study mutual alignment and interactions between colloidal particles of dissimilar shapes and dimensions when dispersed in a nematic host fluid. Convex pentagonal and concave sta…
Design of Distributed Controllers Seeking Optimal Power Flow Solutions Under Communication Constraints
Emiliano Dall'Anese, Andrea Simonetto, Sairaj Dhople
This paper focuses on power distribution networks featuring distributed energy resources (DERs), and develops controllers that drive the DER output powers to solutions of time-vary…
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…
Rotational and translational diffusion of anisotropic gold nanoparticles in liquid crystals controlled by varying surface anchoring
Bohdan Senyuk, David Glugla, Ivan I. Smalyukh
We study translational and rotational diffusion of anisotropic gold nanoparticles (NPs) dispersed in the bulk of a nematic liquid crystal fluid host. Experimental data reveal stron…
Beyond Relaxation and Newton-Raphson: Solving AC OPF for Multi-phase Systems with Renewables
Ahmed S. Zamzam, Nicholas D. Sidiropoulos, Emiliano Dall'Anese
This paper focuses on the AC Optimal Power Flow (OPF) problem for multi-phase systems. Particular emphasis is given to systems with high integration of renewables, where adjustment…
Hexadecapolar colloids
Bohdan Senyuk, Owen Puls, Oleh M. Tovkach +2
Outermost occupied electron shells of chemical elements can have symmetries resembling that of monopoles, dipoles, quadrupoles and octupoles corresponding to filled s-, p-, d- and…
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…
Stabilization and Trajectory Control of a Quadrotor with Uncertain Suspended Load
Xu Zhou, Xiaoli Zhang, Jiucai Zhang +1
Stabilization and trajectory control of a quadrotor carrying a suspended load with a fixed known mass has been extensively studied in recent years. However, the load mass is not al…
Triclinic nematic colloidal crystals from competing elastic and electrostatic interactions
Haridas Mundoor, Bohdan Senyuk, Ivan I. Smalyukh
Self-assembly of nanoparticles can enable composites with pre-designed properties but remains challenged by reproducing structural diversity of atomic and molecular crystals. We co…
Self-assembly of colloidal particles in deformation landscapes of electrically driven layer undulations in cholesteric liquid crystals
Michael C. M. Varney, Qiaoxuan Zhang, Bohdan Senyuk +1
We study elastic interactions between colloidal particles and deformation landscapes of undulations in a cholesteric liquid crystal under an electric field applied normal to choles…
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…
Colloidal Surfaces with Boundaries, Apex Boojums and Nested Elastic Self-Assembly of Nematic Colloids
Sungoh Park, Qingkun Liu, Ivan I. Smalyukh
Self-assembly of colloidal particles is poised to become a powerful composite material fabrication technique, but remains challenged by a limited control over the ensuing structure…
A Computational Framework for Automation of Point Defect Calculations
Anuj Goyal, Prashun Gorai, Haowei Peng +2
A complete and rigorously validated open-source Python framework to automate point defect calculations using density functional theory has been developed. The framework provides an…
Impact of Grain Boundaries on Efficiency and Stability of Organic-Inorganic Trihalide Perovskites
Zhaodong Chu, Mengjin Yang, Philip Schulz +7
Organic-inorganic perovskite solar cells have attracted tremendous attention because of their remarkably high power conversion efficiencies (PCEs). To further improve the device pe…