Biological sensing with liquid crystal Liquid-crystal–based   biosensors   utilize   the   high   sensitivity   of   liquid-crystal   alignment   to   the   presence of   amphiphiles   adsorbed   to   one   of   the   liquid-crystal   surfaces   from   water.   They   offer   inexpensive, easy   optical   detection   of   biologically   relevant   molecules   such   as   lipids,   proteins,   and   cells.   The techniques use linear or circular polarizers to analyze the alignment of the liquid crystal.
Magneto-optic properties of dimeric liquid crystal molecules Using   a   new   class   of   bent-core   mesogens,   odd-numbered   methylene-linked   liquid   crystalline   dimers, which   are   flexible   in   the   core   and   rigid   on   the   ends,   similar   to   chainsticks   (nunchuks),   as   well   as   a state-of-the-art   high-field   split-helix   resistive   solenoid   magnet,   we   have   been   able   to   observe     significantly different phase transition behaviour as well as magneto-optical properties.
Liquid crystal elastomers In   a   recently   published   report,   we   fabricated   smart   assemblies   with   functional   resemblance   to   gecko toe   pads   at   both   the   skin   and   the   muscle   levels.   Integrative   soft-lithography   was   used   for   micro- texturing   of   liquid   crystal   elastomer   (LCE)   thin   films   as   artificial   muscles.   LCEs   were   chosen   as   they possess   features   of   both   rubbers   (elasticity)   and   liquid   crystals   (responsiveness)   with   outstanding shape   shifting   characteristics.   Prior   to   this   work,   LCEs   were   used   in   a   variety   of   forms   ranging   from simple bending actuators to accordion-like ribbons and sophisticated voxelated 3D structures.
Research Interests
Responsive liquid crystal/polymer fibers Airbrushing   of   a   homogeneous   LC   and   polymer   solution   to   make   LC/polymer   as   well   electro-spinning and force spinning are techniques via which piezoelectric and responsive finers are obtained.
Fluid dynamics of bent-core liquid crystal filaments Newtonian   fluids   show   elastic   responses   only   at   free   surfaces   due   to   surface   tension.   In   filament form,    they    experience    a    Plateau-Rayleigh    instability    when    their    length    L    is    larger    than    their perimeter.   Fluids   with   one-   and   two-dimensional   internal   molecular   order,   such   as   columnar   and smectic    liquid    crystals,    may    overcome    the    P-R    instability    to    form    stable,    free-standing    liquid filaments.   In   particular,   stable   filaments   can   be   formed   by   achiral   bent-core   liquid   crystals   with nanoscale   modulated   smectic   and   columnar   (B7)   phases.   They   can   be   considered   as   1-D   fluid structures exhibiting high slenderness ratios greater than 10000.