个人简介

A.B., Middlebury College Ph.D., Princeton University, Postdoctoral Associate, Yale University

研究领域

Chemical crystallography, interations of light and organized media, polycrystalline pattern formation, origin of life science, experimental history of science.

Crystalline polyhedra are prototypical material objects; light is ethereal. Yet, there has been a surprising reciprocity between crystals and light. Polarization and photon entanglement are crystal-optical discoveries while light scattering has been unsurpassed in the characterization of crystals. We engage this dialogue through investigations of unusual crystalline materials that have informed crystal growth mechanisms and led to the design of new optical materials. Recently, we have focused on the interactions of light with organized polycrystals that occur in biopathological structures, high-polymers, molecular crystals, and simple salts; pattern formation is one of the great organizing principles common to all of the sciences. We develop polarization imaging methodologies for the study of complex aggregates and are especially interested in defining heterogeneities and anisotropies of chiroptical properties.

近期论文

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B. Kahr, O. Arteaga Arago’s best paper Chemphyschem, 2012, 13, 79-88. A. G. Shtukenberg, Y. O. Punin, E. Gunn, B. Kahr Spherulites Chem. Rev. 2012, 112, 1805–1838. J. Freudethal, W. Kaminsky, B. Kahr Chiroptical imaging of crystals, in Comprehensive Chiroptical Spectroscopy, Volume 1: Instrumentation, Methodologies, and Theoretical Simulations (N. Berova, P. Polavarapu, K. Nakanishi, R. W. Woody, eds. Wiley VCH, 2012 D. J. Carter, B. Kahr, A. L. Rohl Computational methodology for chirality determination in the Soai reaction by crystals: g-glycine Theor. Chem. Acc. 2012, 131, 1125. O. Arteaga, J. H. Freudenthal, B. Kahr Reckoning electromagnetic principles with polarimetric measurements of anisotropic optical active crystals J. Appl. Cryst. 2012, 45, 279-291. A. L. Rohl, D. J. Carter, S. Bian, A. Shtukenberg, C. Hu, L. Baylon, B. Kahr, H. Mineki, K. Abe, Kawasaki, K. Soai Prediction of Soai reaction enantioselectivity induced by crystals of N-(2-thienylcarbonyl)glycine Cryst. Growth Des. 2012, 12, 2138-2145. A. G. Shtukenberg, X. Cui, J. Freudenthal, E. Gunn, E. Camp, B. Kahr Twisted crystalline mannitol needles establish homologous growth mechanisms for high polymer and small molecule ring-banded spherulites J. Am. Chem. Soc. 2012, 134, 6354-6364. H. Aboulfadl, M. Burgener, J. Benedict, B. Kahr, J. Hulliger Polar alignment of dye molecules in sectors of host lattices revealed by phase sensitive second harmonic generation and scanning pyroelectric microscopy CrystEngComm. 2012, 14, 3391-3395. O. Arteaga, S. Nichols, B. Kahr Mueller matrices in fluorescence scattering Optics Lett. 2012, 37, 2835-2837. Reprinted in Virtual J. Biomed. Optics L. Wong, C. Hu, R. Paradise, Z. Zhu, A. Shtukenberg, B. Kahr Relationship between tribology and photophysics in thin films of mechanically-oriented nanocrystals J. Am. Chem. Soc. 2012, 134, 12245–12251. O. Arteaga, J. Freudenthal, B. Wang, B. Kahr Mueller matrix polarimetry with four photoelastic modulators Appl. Opt. 2012, 51, 6805-6817. B. Kahr, A. G. Shtukenberg Histories of Crystallography by Shafranovskii and Schuh Recent Advances in Crystallography (J. B. Benedict, Ed.) In-Tech Open Access, 2012, 1-34. O. Arteaga, S. Nichols, V. Murphy, Y. Portorreal, C. Hu, B. Kahr Absolute configuration of an organic color center in an anisotropic crystal? Am. Cryst. Assoc. Transactions, 2012, 43, http://www.amercrystalassn.org/2012-transactions. O. Arteaga, J. Freudenthal, B. Wang, S. Nichols, B. Kahr Circular dichroism measurements with multiple photoelastic modulators Chimica Oggi (Chemistry Today) 2012, 30, 6-9. E. A. Riley, C. M. Hess, J. R. Pioquinto, W. Kaminsky, B. Kahr, P. J. Reid Proton transfer and photoluminescence intermittency of single emitters in dyed crystals J. Phys. Chem. B. 2013, 117, 4313−4324. O. Arteaga, B. Kahr Characterization of homogenous depolarizing media based on Mueller matrix differential decomposition Opt. Lett. 2013, 38, 1134-1136. X. Cui, A. L. Rohl, A. Shtukenberg, B. Kahr Twisted aspirin crystals J. Am. Chem. Soc. 2013, 135, 3395–3398. A. Rojas, O. Arteaga, B. Kahr, M. A. Camblor, Synthesis, structure and optical activity of HPM-1, a pure silica chiral zeolite J. Am. Chem. Soc. 2013, 135, 11975–11984. C. Viedma, J. M. McBride, B. Kahr, P. Cintas Enantiomer-specific oriented attachment: Formation of macroscopic homochiral crystal aggregates from a racemic system Angew. Chem. Int. Ed. Engl. 2013, 52, 10545-10548. A. Shtukenberg, Z. Zhu, M. Bhandari, P. Song, A. Rohl, B. Kahr, M. D. Ward Illusory spirals and loops and cystine crystal growth Proc. Natl. Acad. Sci. 2013, 110, 17195-17198.