In:
Science, American Association for the Advancement of Science (AAAS), Vol. 264, No. 5160 ( 1994-05-06), p. 822-826
Kurzfassung:
Single molecules of DNA, visualized in video fluorescence microscopy, were stretched to full extension in a flow, and their relaxation was measured when the flow stopped. The molecules, attached by one end to a 1-micrometer bead, were manipulated in an aqueous solution with optical tweezers. Inverse Laplace transformations of the relaxation data yielded spectra of decaying exponentials with distinct peaks, and the longest time component (τ) increased with length (L) as τ ∼ L 1.66 ± 0.10 . A rescaling analysis showed that most of the relaxation curves had a universal shape and their characteristic times (λ t ) increased as λ t ∼ L 1.65 ± 0.13 . These results are in qualitative agreement with the theoretical prediction of dynamical scaling.
Materialart:
Online-Ressource
ISSN:
0036-8075
,
1095-9203
DOI:
10.1126/science.8171336
Sprache:
Englisch
Verlag:
American Association for the Advancement of Science (AAAS)
Publikationsdatum:
1994
ZDB Id:
128410-1
ZDB Id:
2066996-3
ZDB Id:
2060783-0
SSG:
11
