Search Results - "Ratna, B. R."

Electrically Induced Twist in Smectic Liquid–Crystalline Elastomers by Spillmann, Christopher M, Naciri, Jawad, Ratna, B. R, Selinger, Robin L. B, Selinger, Jonathan V

“…As an approach for electrically controllable actuators, we prepare elastomers of chiral smectic-A liquid crystals, which have an electroclinic effect, i.e.,…”
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Cowpea Mosaic Virus as a Scaffold for 3-D Patterning of Gold Nanoparticles by Blum, Amy Szuchmacher, Soto, Carissa M, Wilson, Charmaine D, Cole, John D, Kim, Moon, Gnade, Bruce, Chatterji, Anju, Ochoa, Wendy F, Lin, Tianwei, Johnson, John E, Ratna, B. R

“…Different mutants of Cowpea Mosaic Virus (CPMV) have been used as scaffolds to bind 2 and 5 nm gold nanoparticles through gold−sulfur bond formation at…”
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Sonochemically Produced ZnS-Coated Polystyrene Core−Shell Particles for Use in Photonic Crystals by Breen, M. L, Dinsmore, A. D, Pink, R. H, Qadri, S. B, Ratna, B. R

“…Zinc sulfide films were grown on carboxyl-modified polystyrene microspheres (PS-CO2) through sonochemical deposition in an aqueous bath containing zinc acetate…”
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Critical behavior of three organosiloxane de Vries-type liquid crystals observed via the dielectric response by Krishna Prasad, S, Shankar Rao, D S, Sridevi, S, Naciri, Jawad, Ratna, B R

“…Dielectric measurements have been made on three organosiloxane liquid crystal compounds exhibiting a smectic A (SmA) to smectic C* (SmC*) transition, the SmA…”
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Isotropic-nematic transition in liquid-crystalline elastomers by Selinger, Jonathan V, Jeon, Hong G, Ratna, B R

“…In liquid-crystalline elastomers, the nematic order parameter and the induced strain vary smoothly across the isotropic-nematic transition, without the…”
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Diacetylenic Lipid Tubules: Experimental Evidence for a Chiral Molecular Architecture by Schnur, J. M., Ratna, B. R., Selinger, J. V., Singh, A., Jyothi, G., Easwaran, K. R. K.

“…Molecular self-assembly is of key importance for the rational design of advanced materials. To investigate the causal relation between molecular structure and…”
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Mn-doped ZnS nanoparticles as efficient low-voltage cathodoluminescent phosphors by Dinsmore, A. D., Hsu, D. S., Gray, H. F., Qadri, S. B., Tian, Y., Ratna, B. R.

“…We have synthesized nanoparticles of ZnS doped with Mn for potential use as cathodoluminescent phosphors in field-emission displays (FEDs). We show that the…”
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Evidence of strain and lattice distortion in lead sulfide nanocrystallites by Qadri, S. B., Yang, J. P., Skelton, E. F., Ratna, B. R.

“…X-ray diffraction studies on nanometer sized lead sulfide particles reveal the presence of a compressive strain. A number of samples with particle sizes…”
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Novel Ferroelectric and Electroclinic Organosiloxane Liquid Crystals by Naciri, J, Ruth, J, Crawford, G, Shashidhar, R, Ratna, B. R

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Unusual dielectric and electrical switching behavior in the de Vries smectic A phase of two organosiloxane derivatives by Prasad, S Krishna, Rao, D S Shankar, Sridevi, S, Lobo, Chethan V, Ratna, B R, Naciri, Jawad, Shashidhar, R

“…X-ray, electrical, electro-optical, and dielectric studies in the de Vries smectic A (SmA) phase of organosiloxane derivatives exhibit features surprisingly…”
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Nonideal Elasticity in Liquid Crystal Elastomers by Shenoy, D. K, Thomsen, D. L, Keller, P, Ratna, B. R

“…Nematic elastomers undergo a phase change from an orientationally ordered nematic phase to a disordered isotropic phase when subjected to a temperature change…”
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Liquid Crystal Elastomers with Mechanical Properties of a Muscle by Thomsen, Donald L, Keller, Patrick, Naciri, Jawad, Pink, Roger, Jeon, Hong, Shenoy, Devanand, Ratna, Banahalli R

“…Free-standing anisotropic side chain liquid crystalline elastomer films have been prepared using mesogens with laterally affixed polymerizable side chains. We…”
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Encapsulation of hemoglobin in a bicontinuous cubic phase lipid by Leslie, S.B., Puvvada, S., Ratna, B.R., Rudolph, A.S.

“…The effects of encapsulating bovine hemoglobin (BHb) in the bicontinuous cubic phase formed by monooleoylglycerol and water was investigated with Fourier…”
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Synthesis of palladium metal nanoparticles in the bicontinuous cubic phase of glycerol monooleate by Puvvada, S, Baral, S, Chow, G. M, Qadri, S. B, Ratna, B. R

“…Various lipid-water systems, such as vesicles and microemulsions, have been used to produce nanoscale metal particles. These particles have potential…”
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High-Pressure Investigations of a Ferroelectric Liquid Crystal Exhibiting a Trend Reversal in the Thermal Variation of Polarization by Bapat, Prasad N, Shankar Rao, D. S, Krishna Prasad, S, Naciri, Jawad, Ratna, B.R

“…In contrast to the exhaustive measurements of various properties of ferroelectric liquid crystals at atmospheric pressure, only a few studies exist at high…”
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Reply to Comments on Complex Pattern Formation by Cowpea Mosaic Virus Nanoparticles by Ratna, B. R, Soto, C. M, Danner, L, Blum, A. S, Fang, J, Lin, T, Johnson, J. E

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Transparent monolithic cubic mesoporous silica synthesized by structure-directing surfactant by Singh, C.P., Yousuf, M., Qadri, S.B., Turner, D.C., Gaber, B.P., Ratna, B.R.

“…The synthesis of transparent monolithic silica with a structure consistent with a space group Pn3m…”
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Self-assembling phospholipid filaments by Rudolph, A. S, Ratna, B. R, Kahn, B

“…Aqueous dispersions of double-chain phospholipids spontaneously assemble into closed bilayers called vesicles (or liposomes). Although the vesicles are in…”
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Modification of supported lipid membranes by atomic force microscopy by Brandow, Susan L., Turner, David C., Ratna, Banahalli R., Gaber, Bruce P.

“…The atomic force microscope (AFM) was used to structurally modify supported lipid bilayers in a controlled quantitative manner. By increasing the force applied…”
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Effect of alcohol chain length on tubule formation in 1,2-bis(10,12-tricosadiynoyl)-sn-glycero-3-phosphocholine by Ratna, B R, Baral-Tosh, S, Kahn, B, Schnur, J M, Rudolph, A S

“…Aqueous dispersions of 1,2-bis(10,12-tricosadiynoyl)-sn-glycero-3-phosphocholine, on cooling below the chain melting temperature, form hollow cylindrical…”
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