{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T10:49:41Z","timestamp":1753872581129,"version":"3.41.2"},"reference-count":21,"publisher":"AIP Publishing","issue":"6","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2007,8,14]]},"abstract":"<jats:p>The elastic coefficient of a single polystyrene chain has been experimentally evaluated by using Brownian dynamics analysis. The Brownian motion of the chain is probed using a particle trapped by optical tweezers with a negligibly small spring constant. The displacement of the particle due to Brownian motion is measured by an interferometer assembled using the same laser beam as the optical tweezers. Two methods are employed for Brownian dynamics analysis: (1) the analysis of the time course of the displacement of the particle and (2) the fitting of the power spectrum of Brownian motion with a Lorentzian. The elastic constant of a polystyrene chain in dichloromethane at 21\u00b0C is estimated to be 6.4\u00d710\u22126 and 1.1\u00d710\u22125N\u2215m when methods (1) and (2) are employed, respectively. The elastic constant obtained by approximating the polystyrene chain to a freely jointed chain is in agreement with the experimentally evaluated elastic constant.<\/jats:p>","DOI":"10.1063\/1.2756527","type":"journal-article","created":{"date-parts":[[2007,8,10]],"date-time":"2007-08-10T22:09:25Z","timestamp":1186783765000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":2,"title":["Elastic coefficient of a single polymer chain by using Brownian dynamics analysis"],"prefix":"10.1063","volume":"127","author":[{"given":"J.","family":"Horinaka","sequence":"first","affiliation":[{"name":"Kyoto University Department of Material Chemistry, Graduate School of Engineering, , Nishikyo, Kyoto 615-8510, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"T.","family":"Maniwa","sequence":"additional","affiliation":[{"name":"Kyoto University Department of Material Chemistry, Graduate School of Engineering, , Nishikyo, Kyoto 615-8510, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K.","family":"Oharada","sequence":"additional","affiliation":[{"name":"Kyoto University Department of Material Chemistry, Graduate School of Engineering, , Nishikyo, Kyoto 615-8510, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"T.","family":"Takigawa","sequence":"additional","affiliation":[{"name":"Kyoto University Department of Material Chemistry, Graduate School of Engineering, , Nishikyo, Kyoto 615-8510, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"317","published-online":{"date-parts":[[2007,8,10]]},"reference":[{"volume-title":"The Theory of Polymer Dynamics","year":"1986","key":"2023062610110933200_c1"},{"volume-title":"Statistical Physics of Macromolecules","year":"1994","key":"2023062610110933200_c2"},{"key":"2023062610110933200_c3","doi-asserted-by":"publisher","first-page":"989","DOI":"10.1002\/1521-3927(20010901)22:13&lt;989::AID-MARC989&gt;3.0.CO;2-D","volume":"22","year":"2001","journal-title":"Macromol. 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