Asher Research Group

Department of Chemistry University of Pittsburgh

 

Colloid Group Publications

 

"Responsive Ionic Liquid-Polymer 2D Photonic Crystal Gas Sensors", N.L. Smith, Z. Hong and S.A. Asher, Analyst, 139, 6379-6386 (2014). (pdf)

"Raman Hyperspectral Imaging Spectrometer Utilizing Crystalline Colloidal Array Photonic Crystal Diffraction", K.T. Hufziger, S.V. Bykov and S.A. Asher, Applied Spectroscopy, 68, 1219-1223 (2014). (pdf)

"2D Photonic Crystal Protein Hydrogel Coulometer for Sensing Serum Albumin Ligand Binding”, Z. Cai, J.T. Zhang, F. Xue, Z. Hong, D. Punihaole, and S.A. Asher, Analytical Chemistry, 86, 4840-4847 (2014). (pdf)

"Asymmetric Free-Standing 2-D Photonic Crystal Films and their Janus Particles", J.T. Zhang, X. Chao and S.A. Asher, Journal of American Chemical Society, 135, 11397-11401 (2013).  (pdf)

"Vertical Spreading of Two-Dimensional Crystalline Colloidal Arrays", J.T. Zhang, L. Wang, X. Chao, S.S. Velankar and S.A. Asher, Journal of Materials Chemistry C., 1, 6099-6102 (2013). (pdf)

"Two-dimensional Array Debye Ring Diffraction Protein Recognition Sensing", J.T. Zhang, X. Chao, X. Liu and S. A. Asher, Chem. Commun., 49, 6337-6339 (2013). (
pdf)

"Langevin Dynamics Simulation of 3D Colloidal Crystal Vacancies and Phase Transitions", R. Laghaei, S.A. Asher and R.D. Coalson, J. Phys. Chem. B., 117, 5271-5279 (2013). (pdf)

"Two-Dimensional Photonic Crystals Surfactant Detection", J.T. Zhang, N. Smith and S.A. Asher, Analytical Chemistry, 84, 6416-6420 (2012). (pdf)

"Fabrication of Large-Area Two-Dimensional Colloidal Crystals", J.T. Zhang, L. Wang, D.N. Lamont, S. Velankar and S.A. Asher, Angew. Chem. Int. Ed., 51, 6117-6120 (2012). (pdf)

"Reflectivity Enhanced Two-Dimensional Dielectric Particle Array Monolayer Diffraction", A. Tikhonov, N. Kornienko, J. Zhang, L. Wang and S.A. Asher, Journal of Nanophotonics, 6, 063509-1 - 063509-9 (2012). (pdf)

"Silica Crystalline Colloidal Array Deep Ultraviolet Narrow-Band Diffraction Devices", L. Wang, A. Tikhonov and S.A. Asher, Appl. Spectrosc., 66, 426-431 (2012). (pdf)

"Periodicity-Controlled Two-Dimensional Crystalline Colloidal Arrays", J. Zhang, L. Wang, X. Chao and S.A. Asher, Langmuir, 27, 15230-15235 (2011). (pdf)

"2-D Array Photonic Crystal Sensing Motif”, J. Zhang, L. Wang, J. Luo, A. Tikhonov, N. Kornienko, and S.A. Asher, Journal of the American Chemical Society, 133, 9152–9155 (2011). (pdf)

“Colloidal Crystal Growth Monitored by Bragg Diffraction Interference Fringes”, J.J. Bohn, A. Tikhonov and S.A. Asher, Journal of Colloid and Interface Science, 350, 381-386 (2010). (pdf)

"Monodisperse, High Refractive Index, Highly Charged ZnS Colloids Self Assemble Into Crystalline Colloidal Arrays” J. Luo, D. Qu, A. Tikhonov, J. Bohn, and S.A. Asher, Journal of Colloid and Interface Science, 345, 131-137 (2010). (pdf)

"Charge stabilized crystalline colloidal arrays as templates for fabrication of non-close-packed inverted photonic crystals", J.J. Bohn, M. Ben-Moshe, A. Tikhonov, D. Qu, D.N. Lamont, and S.A. Asher, Journal of Colloid and Interface Science, 344, 298–307 (2010). (pdf)

"Photonic Crystal Multiple Diffraction Observed by Angular-Resolved Reflection Measurements”, A. Tikhonov, J. Bohn and S.A. Asher, Phys. Rev. B. 80, 235125-1/235125-5 (2009). (pdf)

"Fabrication of Silica Shell Photonic Crystals through Flexible Core Templates", L. Wang and S.A. Asher, Chemistry of Materials, 21, 4608–4613 (2009). (pdf)

"Dependence of Photonic Crystal Nanocomposite Elasticity on Crystalline Colloidal Array Particle Size", M.M. Ward Muscatello, L.E. Stunja, P. Thareja, L. Wang, J.J. Bohn, S.S. Velankar, and S.A. Asher, Macromolecules, 42, 4403-4406 (2009). (pdf)

"Polymerized Crystalline Colloidal Array Sensing of High Glucose Concentrations", M.M. Ward Muscatello, L.E. Stunja, and S.A. Asher, Analytical Chemistry, 81, 4978-4986 (2009). (pdf)

"Tear Fluid Photonic Crystal Contact Lens Noninvasive Glucose Sensors", S.A. Asher and J. T. Baca, Handbook of Optical Sensing of Glucose in Biological Fluids and Tissues by Valery V. Tuchin, (Editor) Taylor & Francis, Pub., New York, Chap. 13, 387-417 (2009). (pdf)

"Photonic Crystal Borax Competitive Binding Carbohydrate Sensing Motif", Q. Cui, M.M. Ward Muscatello, and S.A. Asher, Analyst, 134, 875-880 (2009). (pdf)

"Enabling Thermoreversible Physically Cross-Linked Polymerized Colloidal Array Photonic Crystals", S.A. Asher, K.W Kimble, J.P. Walker, Chemistry of Materials, 20(24), 7501-7509 (2008). (pdf)

"Light diffraction from colloidal crystals with low dielectric constant modulation: Simulations using single-scattering theory", A. Tikhonov, R.D. Coalson, S.A. Asher, Physical Review B: Condensed Matter and Materials Physics, 77(23), 235404/1-235404/16 (2008). (pdf)

"Poly(vinyl alcohol) Rehydratable Photonic Crystal Sensor Materials", M.M. Ward Muscatello and S.A. Asher, Advanced Functional Materials, 18, 1186–1193 (2008). (pdf)

"Progress in Developing Polymerized Crystalline Colloidal Array Sensors for Point-of-care Detection of Myocardial Ischemia", J.T. Baca, D.N. Finegold and S.A. Asher, Analyst, 133, 385-390 (2008). (pdf)

"Polymerized PolyHEMA Photonic Crystals: pH and Ethanol Sensor Materials", X. Xu, A.V. Goponenko and S.A. Asher, Journal of the American Chemical Society, 130(10), 3113-3119 (2008). (pdf)

"Photonic crystal sensor for organophosphate nerve agents utilizing the organophosphorus hydrolase enzyme", J.P. Walker, K.W. Kimble, S.A. Asher, Analytical and Bioanalytical Chemistry, 389(7-8), 2115-2124 (2007). (pdf)

"Mass spectral determination of fasting tear glucose concentrations in nondiabetic volunteers", J.T. Baca, C.R. Taormina, E. Feingold, D.N. Finegold, J.J. Grabowski, S.A. Asher, Clinical Chemistry, 53(7), 1370-1372 (2007). (pdf)

"Cation identity dependence of crown ether photonic crystal Pb2+ sensing", F. Yan, S. Asher, Analytical and Bioanalytical Chemistry, 387(6), 2121-2130 (2007). (pdf)

"Analysis of Tear Glucose Concentration with Electrospray Ionization Mass Spectrometry", C.R. Taormina, J.T. Baca, S.A. Asher, J.J. Grabowski, D.N. Finegold, Journal of the American Society for Mass Spectrometry, 18(2), 332-336 (2007). (pdf)

"Tear glucose analysis for the noninvasive detection and monitoring of diabetes mellitus", J.T. Baca, D.N. Finegold, S.A. Asher, The Ocular Surface, 5(4), 280-93 (2007). (pdf)

"Progress Toward the Development of a Point-of-Care Photonic Crystal Ammonia Sensor", K. Kimble, J. Walker, D. Finegold and S.A. Asher, Anal. and Bioanal. Chem., 385, 678–685 (2006). (pdf)

"Fast Responsive Crystalline Colloidal Array Photonic Crystal Glucose Sensors " M. Ben-Moshe, V. Alexeev, S. Asher, Analytical Chemistry, 78(14), 5149-5157 (2006) (pdf)

Acetylcholinesterase-Based Organophosphate Nerve Agent Sensing Photonic Crystal", J.P. Walker and S.A. Asher, Anal. Chem., 77, 1596 (2005). (pdf)

"Epoxide Functionalized Polymerized Crystalline Colloidal Arrays," M. Kamenjicki and S.A. Asher, Sensors and Actuators B., 106, 373 (2005). (pdf)

"Modeling of Simulated Hydrogel Volume Changes in Photonic Crystal Pb2+ Sensing Materials", A. Goponenko and S. A. Asher, J. Am. Chem. Soc., 127, 10753 (2005). (pdf)

"Photoswitchable Spirobenzopyran-based Photochemically Controlled Photonic Crystals," M. Kamenjicki, I. Lednev and S.A. Asher, Adv. Funct. Matl., 15, 1401 (2005). (pdf)

"Simple Nanosecond to Minutes Transient Absorption Spectrophotometer", A. Mikhonin, M.K. Maurer, C. Reese and S. A. Asher, Applied Spectroscopy, 59, 1534 (2005). (pdf)

"Electrochemical Investigation of Pb2+ Binding and Transport through a Polymerized Crystalline Colloidal Array Hydrogel Containing Benzo-18-crown-6", C. Geary, I. Zudans, A. Goponenko, S. Asher, S. Weber, Analytical Chemistry 77(1), 185-192 (2005). (pdf)

"Photonic Crystal Devices", M. Kamenjicki, R. Kasavamoorthy and S. A. Asher, Ionics 10, 233-236 (2005). (pdf)

"A General Photonic Crystal Sensing Motif: Creatinine in Bodily Fluids", A. Sharma, T. Jana, R. Kesavamoorthy, L. Shi, M. Virji, D. Finegold and S.A. Asher, J. Am. Chem. Soc., 126, 2971-2977 (2004). (pdf)

"Adventures with Smart Chemical Sensing; Electrooptically Responsive Photonic Crystals", S.A. Asher, Nanoparticles: Building Blocks for Nanotechnology, Rotello, V.M., ed. Kluwer: New York, 145-172 (2004). (pdf)

"Synthesis and Utilization of Monodisperse Hollow Polymeric Particles in Photonic Crystals," X. Xu and S.A. Asher, J. Am. Chem. Soc., 126, 7940-7945 (2004). (pdf)

"Diffraction in Crystalline Colloidal-Array Photonic Crystals," S.A. Asher, J.M. Weissman, A. Tikhonov, R.D. Coalson and R. Kesavamoorthy, Phys. Rev. E, 69, 066619 (2004). (pdf)

"Photoresponsive Azobenzene Photonic Crystals," M. Kamenjicki, I.K. Lednev and S.A. Asher, J. Phys. Chem. B, 108, 12637-12639 (2004). (pdf)

"Photochemically Controlled Crosslinking in Polymerized Crystalline Colloidal Array Photonic Crystals," M. Kamenjicki and S.A. Asher, Macromolecules, 37, 8293-8296 (2004). (pdf)

"Photonic Crystal Glucose-Sensing Material for Noninvasive Monitoring of Glucose in Tear Fluid," V. Alexeev, S. Das, D.N. Finegold and S.A. Asher, Clinical Chemistry, 50, 2353 - 2360 (2004). (pdf)

"Nanogel Nanosecond Photonic Crystal Optical Switching," C. Reese, A. Mikhonin, M. Kamenjicki, A. Tikhonov and S.A. Asher, J. Am. Chem. Soc., 126, 1493 (2004). (pdf)

"Photonic crystal optrode sensor for detection of Pb2+ in high ionic strength environments", C. Reese, S. Asher, Analytical Chemistry 75(15), 3915-3918 (2003). (pdf)

"Synthesis and Crystal Structure of 4-Amino-3-Fluorophenylboronic Acid," S. Das, V.L. Alexeev, A.C. Sharma, S.J. Geib and S.A. Asher, Tetrahedron Letters, 44/42, 7719-7722 (2003). (pdf)

"Photonic Crystal Aqueous Metal Cation Sensing Materials," S.A. Asher, A.C. Sharma, A.V. Goponenko and M.M. Ward, Anal. Chem., 75, 1676 (2003). (pdf)

"Photonic Crystal Carbohydrate Sensors: Low Ionic Strength Sugar Sensing," V. Alexeev, A. Goponenko, A. Sharma, I.K. Lednev, C. Wilcox, D. Finegold and S.A. Asher, J. Am Chem. Soc., 125, 3322 (2003). (pdf)

"High Ionic Strength Glucose Sensing Photonic Crystal," V.L. Alexeev, A.C. Sharma, A.V. Goponenko, S. Das, I.K. Lednev, C.S. Wilcox, D.N. Finegold and S.A. Asher, Anal. Chem., 75, 2316 (2003). (pdf)

"Photochemically Controlled Photonic Crystals", M. Kamenjicki, I.K. Lednev, A. Mikhonin, R. Kesavamoorthy and S.A. Asher, Advanced Functional Materials, 13, 774 (2003). (pdf)

"Polymerized Crystalline Colloidal Array Chemical Sensing Materials for Detection of Lead in Bodily Fluids", S. Asher, S. Peteu, C. Reese, M. Lin and D. Finegold, Analy. and Bioanaly. Chem., 373, 632-638 (2002). (pdf)

"Mesoscopic Monodisperse Ferromagnetic Colloids Enable Magnetically Controlled Photonic Crystals" X. Xu, S. Majetick, and S. Asher, J. Am. Chem. Soc., 124, 13864-13868 (2002). (pdf)

"Synthesis and Utilization of Monodisperse Superparamagnetic Colloidal Particles for Magnetically Controllable Photonic Crystals", X. Xu, G. Friedman, K. Humfeld, S. Majetich and S. A. Asher, Chemistry of Materials, 14, 1249-1256 (2002). (pdf)

"Emulsifier-Free Emulsion Polymerization Produces Highly Charged, Monodisperse Particles for Near Infrared Photonic Crystals", C. Reese and S. A. Asher, J. Colloid Interface Science, 248, 41-46 (2002). (pdf)

"Development of an Intelligent Polymerized Crystalline Colloidal Array Colorimetric Reagent" C.Reese, M. Baltusavich, J. Keim and S. A. Asher, Analytical Chemistry, 73, 5038-5042 (2001). (pdf)

"Superparamagnetic Photonic Crystals," X. Xu, G. Friedman, K. Humfeld, S. Majetich and S. A. Asher, Advanced Materials, 13, 1681-1684 (2001). (pdf)

"Photochemical Incorporation of Silver Quantum Dots in Monodisperse Silica Colloids for Photonic Crystal Applications," W. Wang and S. A. Asher, J. Am. Chem. Soc., 123, 12528-12535 (2001). (pdf)

"Photonic Crystal Chemical Sensors: pH and Ionic Strength", K. Lee and S. A. Asher, J. Am. Chem. Soc., 122, 9534-9537 (2000). (pdf)

"Synthesis of Highly Charged, Monodisperse Polystyrene Colloidal Particles for the Fabrication of Photonic Crystals", Reese, C. Guerrero, J. Weissman, K. Lee and S. A. Asher, J. Colloid and Interface Science, 232, 76-80 (2000). (pdf)

"Crystalline Colloidal Array Optical Switches and Limiters", S.A. Asher, G. Pan, and R. Kesavamoorthy, Nonlinear Optics, 21, 343-352 (1999). (pdf)

"Entropic Trapping of Macromolecules by Mesoscopic Periodic Voids in a Polymer Hydrogel", L. Liu, P. Li, and S. A. Asher, Nature, 397, 141-144 (1999). (pdf)

"Crystalline Colloidal Array of Water Voids in Hydrogels: Direct Evidence for Entropic Trapping of Flexible Polymers", L. Liu, P. Li, and S. A. Asher, J. Am. Chem. Soc., 121, 4040-4046 (1999). (pdf)

"Novel Optically Responsive Diffracting Materials Derived From Crystalline Colloidal Array Self Assembly", S. A. Asher, J. Weissman, H. B. Sunkara, G. Pan, J. Holtz, L. Liu, and R. Kesavamoorthy, Polymers for Advanced Optical Applications, S. A. Jenekhe and K. J. Wynne (eds.), 495-506 (1998). (pdf)

"Intelligent Polymerized Crystalline Colloidal Arrays: Novel Chemical Sensor Materials," J. H. Holtz, J. S. W. Holtz, C. H. Munro, and S. A. Asher, Anal. Chem. 70, 780-791 (1998). (pdf)

"Polarization Dependence of Crystalline Colloidal Array Diffraction", G. Pan, A. K. Sood, and S. A. Asher, J. Appl. Phys. 84, 83-86 (1998). (pdf)

"Synthesis of Highly Fluorinated Monodisperse Colloids for Low Refractive Index Crystalline Colloidal Arrays", G. Pan, A. S. Tse, R. Kesavamoorthy, and S. A. Asher, J. Am. Chem. Soc. 120, 6518-6524 (1998). (pdf)

"Nsec Switchable Polymerized Crystalline Colloidal Array Bragg Diffracting Materials", Pan, R. Kesavamoorthy, and S. A. Asher, J. Am. Chem. Soc. 120, 6525-6530 (1998). (pdf)

"Glucose Sensing Intelligent Polymerized Crystalline Colloidal Arrays", S. A. Asher and J. Holtz, LEOS Newsletter 12, 32-34 (1998). (pdf)

"Image Charge Effects on Colloidal Crystal Ordering", T.Tandon, R. Kesavamoorthy, and S. A. Asher, J. Chem. Phys., 109, 6490-6496. (1998). (pdf)

"Mesoscopically Periodic Photonic Crystal Materials for Linear and Nonlinear Optics and Chemical Sensing", J. Holtz, J. Weissman, G. Pan and S. A. Asher, Material Research Soc. 23, 44-50, (1998). (pdf)

"Mesoscopically Periodic Materials for Optical Switching and Limiting: Polymerized Crystalline Colloidal Arrays", S. A. Asher, G. Pan, J. Weissman and J. Holtz, Proceedings of the First International Workshop on Optical Power Limiting, 16 (1998).

"Fortuitously Superimposed Lattice Plane Secondary Diffraction in Crystalline Colloidal Arrays", L. Liu, P. Li, and S. A. Asher, J. Am. Chem. Soc. 119, 2729-2732 (1997). (pdf)

"Optically Nonlinear Bragg Diffracting Nanosecond Optical Switches", G. Pan, R. Kesavamoorthy, and S. A. Asher, Phys. Rev. Lett. 78, 3860-3863 (1997). (pdf)

"Thermally Switchable Laser Diffracting Gels", R. Kesavamoorthy, G. Pan, and S. A. Asher, in Laser Applications in Material Science and Industry, Ed. R. Kesavamoorthy, C. B. Rao, A. K. Arora, P. Kalyanasundaram, New Delhi: Allied Publishers Ltd., 265-273 (1997). (pdf)

"Polymerized Colloidal Crystal Hydrogel Films as Intelligent Chemical Sensing Materials", J. H. Holtz and S. A. Asher, Nature 389, 829-832 (1997). (pdf)

"Design of Intelligent Mesocale Periodic Array Structures Utilizing Smart Hydrogel", H. B. Sunkara, J.M. Weissman, B. G. Penn, D. O. Frazier, and S. A. Asher, Polymer Preprints 37, 453-454 (1996). (pdf)

"Thermally Switchable Periodicities from Novel Mesocopically Ordered Materials", J. M. Weissman, H. B. Sunkara, A. S. Tse , and S. A. Asher, Science 274, 959-960 (1996). (pdf)

"Crystalline Colloidal Array Optical Switching Devices", S. A. Asher and G. Pan, in Nanoparticles in Solids and Solutions NATO ASI Series 18, 65-69, (1996). (pdf)

"Synthesis of Dyed Monodisperse Poly(methyl methacrylate) Colloids for the Preparation of Submicron Periodic Light Absorbing Arrays", A. Tse, Z. Wu, and S. A. Asher, Macromolecules, 28, 6533-6538 (1995). (pdf)

"Optically Nonlinear Crystalline Colloidal Self Assembled Submicron Periodic Structures for Optical Limiters", S. Asher, A. Tse, L. Liu, G. Pan, Z. Wu, and P. Li, Mat. Res. Soc. Symp. Proc., 374, 305-310 (1995). (pdf)

"Self Assembly Motif for Creating Submicron Periodic Materials. Polymerized Crystalline Colloidal Arrays", S. A. Asher, J. Holtz, L. Liu, and Z. Wu, J. Am. Chem. Soc., 116, 4997-4998 (1994). (pdf)

"Preparation and Properties of Tailored Morphology, Monodisperse Colloidal Silica-Cadmium Sulfide Nanocomposites", S.-Y. Chang, L. Liu, and S. A. Asher, J. Am. Chem. Soc., 116, 6739-6744 (1994). (pdf)

"Preparation and Processing of Monodisperse Colloidal Silica-Cadmium Sulfide Nano-composites", S.-Y. Chang, L. Liu, and S. A. Asher, Mat. Res. Soc. Symp. Proc., 346, 875-880 (1994). (pdf)

"Creation of Templated Complex Topological Morphologies in Colloidal Silica", S.-Y. Chang, L. Liu, and S. A. Asher, J. Am. Chem. Soc., 116, 6745-6747 (1994). (pdf)

"Nanosecond Photothermal Dynamics in Colloidal Suspension", R. Kesavamoorthy, M. S. Super, and S. A. Asher, J. Appl. Phys., 71, 1116-1123 (1992). (pdf)

"New Nonlinear Bragg Diffraction Devices", S. A. Asher, R. Kesavamoorthy, S. Jagannathan, P. Rundquist, SPIE, Vol. 1626 Nonlinear Optics III, 238-242 (1992). (pdf)

"Melting of Colloidal Crystals: A Monte Carlo Study", J. C. Zahorchak, R. Kesavamoorthy, R. D. Coalson, and S. A. Asher, J. Chem. Phys., 96, 6873-6879 (1992). (pdf)

"Self-Assembly and Ordering of Electrostatically Stabilized Silica Suspensions", R. Kesavamoorthy, S. Tandon, S. Xu, S. Jagannathan, and S. A. Asher, J. Coll. Int. Sci., 153, 188-198 (1992). (pdf)

"Photothermal Compression of Colloidal Crystals", P. A. Rundquist, S. Jagannathan, R. Kesavamoorthy, C. Brnardic, S. Xu, and S. A. Asher, J. Chem. Phys., 94, 711-717 (1991). (pdf)

"Colloidal Crystal Photothermal Dynamics", R. Kesavamoorthy, S. Jagannathan, P. A. Rundquist, and S. A. Asher, J. Chem. Phys., 94, 5172-5179 (1991). (pdf)

"Thermal Diffuse Scattering from Colloidal Crystals", P. A. Rundquist, R. Kesavamoorthy, S. Jagannathan, and S. A. Asher, J. Chem. Phys., 95, 1249-1257 (1991). (pdf)

"Collective Diffusion in Colloidal Crystals", P. A. Rundquist, R. Kesavamoorthy, S. Jagannathan, and S. A. Asher, J. Chem. Phys., 95, 8546-8551 (1991). (pdf)

"Dynamical Bragg Diffraction From Crystalline Colloidal Arrays", P. A. Rundquist, P. Photinos, S. Jagannathan, and S. A. Asher, J. Chem. Phys., 91, 4932-4941 (1989). (pdf)

"Crystalline Colloidal Bragg Diffraction Devices: The Basis for a New Generation of Raman Instrumentation", S. A. Asher, P. L. Flaugh and G. Washinger, Spectroscopy, 1, 26-31 (1986). (pdf)

"Characterization of Optical Diffraction and Crystal Structure in Monodisperse Polystyrene Colloids", R. J. Carlson and S. A. Asher, Appl. Spectrosc., 38, 297-304 (1984). (pdf)

"Development of a New Optical Wavelength Rejection Filter: Demonstration of Its Utility in Raman Spectroscopy", P. L. Flaugh, S. E. O'Donnell, and S. A. Asher, Appl. Spectrosc., 38, 847-850 (1984). (pdf)

"Parabolic focal conics and polygonal textures in lipid liquid crystals", S.A. Asher and P.S. Pershan, Journal de Physique, 40, 161-850 (1973). (pdf)

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