<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Markelz, A. G.</style></author><author><style face="normal" font="default" size="100%">Roitberg, A.</style></author><author><style face="normal" font="default" size="100%">Heilweil, E. J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Pulsed terahertz spectroscopy of DNA, bovine serum albumin and collagen between 0.1 and 2.0 THz</style></title><secondary-title><style face="normal" font="default" size="100%">Chemical Physics Letters</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Chem. Phys. Lett.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">b-dna</style></keyword><keyword><style  face="normal" font="default" size="100%">Chemistry</style></keyword><keyword><style  face="normal" font="default" size="100%">films</style></keyword><keyword><style  face="normal" font="default" size="100%">modes</style></keyword><keyword><style  face="normal" font="default" size="100%">Physics</style></keyword><keyword><style  face="normal" font="default" size="100%">proteins</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2000</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Mar</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">1-2</style></number><volume><style face="normal" font="default" size="100%">320</style></volume><pages><style face="normal" font="default" size="100%">42-48</style></pages><isbn><style face="normal" font="default" size="100%">0009-2614</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;We report the first use of pulsed terahertz spectroscopy to examine low-frequency collective vibrational modes of biomolecules. Broadband absorption increasing with frequency was observed for lyophilized powder samples of calf thymus DNA, bovine serum albumin and collagen in the 0.06-2.00 THz (2-67 cm(-1)) frequency range, suggesting that a large number of the low-frequency collective modes for these systems are IR active. Transmission measurements at room temperature showed increasing FIR absorption with hydration and denaturing. (C) 2000 published by Elsevier Science B.V. All rights reserved.&lt;/p&gt;</style></abstract><work-type><style face="normal" font="default" size="100%">Article</style></work-type><accession-num><style face="normal" font="default" size="100%">WOS:000086211200008</style></accession-num><notes><style face="normal" font="default" size="100%">ISI Document Delivery No.: 299RG&lt;br/&gt;Times Cited: 561&lt;br/&gt;Cited Reference Count: 24&lt;br/&gt;Cited References: &lt;br/&gt;     Cai Y, 1998, APPL PHYS LETT, V73, P444, DOI 10.1063/1.121894&lt;br/&gt;     CARTER DC, 1994, ADV PROTEIN CHEM, V45, P153&lt;br/&gt;     Chen EF, 1998, BIOCHEMISTRY-US, V37, P5589, DOI 10.1021/bi972369f&lt;br/&gt;     CHEVILLE RA, 1995, OPT LETT, V20, P1646, DOI 10.1364/OL.20.001646&lt;br/&gt;     FENG Y, 1991, PHYS REV A, V43, P1049, DOI 10.1103/PhysRevA.43.1049&lt;br/&gt;     Fraser R.D.B., 1973, CONFORMATION FIBROUS&lt;br/&gt;     Frushour B., 1975, ADV INFRARED RAMAN S, V1&lt;br/&gt;     GENZEL L, 1984, SPECTROSCOPY BIOL MO, P609&lt;br/&gt;     GRIEBENOW K, 1995, P NATL ACAD SCI USA, V92, P10969, DOI 10.1073/pnas.92.24.10969&lt;br/&gt;     HAYWARD S, 1995, ANNU REV PHYS CHEM, V46, P223, DOI 10.1146/annurev.pc.46.100195.001255&lt;br/&gt;     KATZENELLENBOGE.N, 1992, ULTRA WIDEBAND SHORT&lt;br/&gt;     Kindt JT, 1996, J PHYS CHEM-US, V100, P10373, DOI 10.1021/jp960141g&lt;br/&gt;     LINDSAY SM, 1988, BIOPOLYMERS, V27, P1015, DOI 10.1002/bip.360270610&lt;br/&gt;     Lisy V, 1997, J BIOMOL STRUCT DYN, V14, P517, DOI 10.1080/07391102.1997.10508150&lt;br/&gt;     Markelz AG, 1998, APPL PHYS LETT, V72, P2229, DOI 10.1063/1.121329&lt;br/&gt;     Nossal R. J., 1991, MOL CELL BIOPHYSICS&lt;br/&gt;     POWELL JW, 1987, PHYS REV A, V35, P3929, DOI 10.1103/PhysRevA.35.3929&lt;br/&gt;     POWELL JW, 1991, J MOL STRUCT, V247, P119&lt;br/&gt;     ROITBERG A, 1995, SCIENCE, V268, P1319, DOI 10.1126/science.7539156&lt;br/&gt;     WEIDLICH T, 1990, BIOPOLYMERS, V30, P477, DOI 10.1002/bip.360300324&lt;br/&gt;     WEIDLICH T, 1990, J BIOMOL STRUCT DYN, V8, P139, DOI 10.1080/07391102.1990.10507795&lt;br/&gt;     WITTLIN A, 1986, PHYS REV A, V34, P493, DOI 10.1103/PhysRevA.34.493&lt;br/&gt;     YOUNG L, 1990, PHYS REV A, V41, P7020, DOI 10.1103/PhysRevA.41.7020&lt;br/&gt;     ZHUANG W, 1990, PHYS REV A, V41, P7033, DOI 10.1103/PhysRevA.41.7033&lt;br/&gt;Markelz, AG Roitberg, A Heilweil, EJ&lt;br/&gt;Roitberg, Adrian/A-2378-2009&lt;br/&gt;Markelz, Andrea/0000-0003-0443-4319&lt;br/&gt;598&lt;br/&gt;7&lt;br/&gt;235&lt;br/&gt;Elsevier science bv&lt;br/&gt;Amsterdam</style></notes><auth-address><style face="normal" font="default" size="100%">NIST, Opt Technol Div, Gaithersburg, MD 20899 USA. NIST, Div Biotechnol, Gaithersburg, MD 20899 USA. Lucent Technol, Mat Phys Res, Murray Hill, NJ 07974 USA.&lt;br/&gt;Markelz, AG (corresponding author), SUNY Buffalo, Dept Phys, Buffalo, NY 14260 USA.</style></auth-address></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Markelz, A. G.</style></author><author><style face="normal" font="default" size="100%">Heilweil, E. J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Temperature-dependent terahertz output from semi-insulating GaAs photoconductive switches</style></title><secondary-title><style face="normal" font="default" size="100%">Applied Physics Letters</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Appl. Phys. Lett.</style></alt-title><short-title><style face="normal" font="default" size="100%">Appl. Phys. Lett.Appl. Phys. Lett.</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">domain</style></keyword><keyword><style  face="normal" font="default" size="100%">generation</style></keyword><keyword><style  face="normal" font="default" size="100%">Physics</style></keyword><keyword><style  face="normal" font="default" size="100%">pulses</style></keyword><keyword><style  face="normal" font="default" size="100%">semiconductor surfaces</style></keyword><keyword><style  face="normal" font="default" size="100%">transmission spectroscopy</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1998</style></year><pub-dates><date><style  face="normal" font="default" size="100%">May</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">18</style></number><volume><style face="normal" font="default" size="100%">72</style></volume><pages><style face="normal" font="default" size="100%">2229-2231</style></pages><isbn><style face="normal" font="default" size="100%">0003-6951</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The temperature dependence of the terahertz (THz) output power and spectra from biased photoconductive switches was measured for several antenna gap widths and applied biases. The spectrally integrated THz output had a nonmonotonic temperature dependence in all cases with the value increasing by a factor of 3 from room temperature to 150 K for low biases and 100 K at high biases. An abrupt decrease in output power occurs below 90 K, and the spectrum shifts to lower frequencies as the temperature is lowered. (C) 1998 American Institute of Physics.&lt;/p&gt;</style></abstract><work-type><style face="normal" font="default" size="100%">Article</style></work-type><accession-num><style face="normal" font="default" size="100%">WOS:000073362300011</style></accession-num><notes><style face="normal" font="default" size="100%">ISI Document Delivery No.: ZK775&lt;br/&gt;Times Cited: 22&lt;br/&gt;Cited Reference Count: 21&lt;br/&gt;Cited References: &lt;br/&gt;     Brener I, 1996, OPT LETT, V21, P1924, DOI 10.1364/OL.21.001924&lt;br/&gt;     BRORSON SD, 1994, APPL PHYS LETT, V64, P2385, DOI 10.1063/1.111622&lt;br/&gt;     CHEVILLE RA, 1995, OPT LETT, V20, P1646, DOI 10.1364/OL.20.001646&lt;br/&gt;     Flanders BN, 1996, J PHYS CHEM-US, V100, P11824, DOI 10.1021/jp960953c&lt;br/&gt;     Haran G, 1997, CHEM PHYS LETT, V274, P365, DOI 10.1016/S0009-2614(97)00705-7&lt;br/&gt;     HU BB, 1990, APPL PHYS LETT, V57, P2629, DOI 10.1063/1.103829&lt;br/&gt;     HU BB, 1995, PHYS REV LETT, V74, P1689, DOI 10.1103/PhysRevLett.74.1689&lt;br/&gt;     Jepsen PU, 1996, J OPT SOC AM B, V13, P2424, DOI 10.1364/JOSAB.13.002424&lt;br/&gt;     KATZENELLENBOGE.N, 1992, ULTRA WIDEBAND SHORT&lt;br/&gt;     Kindt JT, 1996, J PHYS CHEM-US, V100, P10373, DOI 10.1021/jp960141g&lt;br/&gt;     Nahata A, 1996, APPL PHYS LETT, V69, P2321, DOI 10.1063/1.117511&lt;br/&gt;     NUSS MC, 1987, PHYS REV LETT, V58, P2355, DOI 10.1103/PhysRevLett.58.2355&lt;br/&gt;     NUSS MC, 1991, PHYS REV LETT, V66, P3305, DOI 10.1103/PhysRevLett.66.3305&lt;br/&gt;     PARKS B, 1995, PHYS REV LETT, V74, P3265, DOI 10.1103/PhysRevLett.74.3265&lt;br/&gt;     RALPH SE, 1992, PHOTO INDUCED SPACE, V261&lt;br/&gt;     RODRIGUEZ G, 1994, OPT LETT, V19, P1194&lt;br/&gt;     SAETA PN, 1992, APPL PHYS LETT, V60, P1477, DOI 10.1063/1.107276&lt;br/&gt;     WANG HH, 1993, J ELECTRON MATER, V22, P1461, DOI 10.1007/BF02649999&lt;br/&gt;     Wang S, 1989, FUNDAMENTALS SEMICON&lt;br/&gt;     ZHANG XC, 1990, APPL PHYS LETT, V56, P1011, DOI 10.1063/1.102601&lt;br/&gt;     ZHANG XC, 1994, APPL PHYS LETT, V64, P622, DOI 10.1063/1.111069&lt;br/&gt;Markelz, AG Heilweil, EJ&lt;br/&gt;Markelz, Andrea/0000-0003-0443-4319&lt;br/&gt;22&lt;br/&gt;&lt;br/&gt;6&lt;br/&gt;Amer inst physics&lt;br/&gt;Woodbury</style></notes><auth-address><style face="normal" font="default" size="100%">NIST, Opt Technol Div, Gaithersburg, MD 20899 USA.&lt;br/&gt;Markelz, AG (corresponding author), NIST, Opt Technol Div, Gaithersburg, MD 20899 USA.</style></auth-address></record></records></xml>