2005年7月
Dispersion in active transport by kinesin-powered molecular shuttles
NANO LETTERS
- ,
- 巻
- 5
- 号
- 7
- 開始ページ
- 1337
- 終了ページ
- 1342
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/nl050586t
- 出版者・発行元
- AMER CHEMICAL SOC
Active transport driven by molecular motors is a key technology for the continued miniaturization of lab-on-a-chip devices, because it is expected to enable nanofluidic devices with channel diameters of less than 1 mu m and total channel lengths on the order of 1 mm. An important metric for a transport mechanism employed in an analytic device is dispersion, because it critically affects the sensitivity and resolution. Here, we investigate the mechanisms responsible for the dispersion of a swarm of "molecular shuttles", consisting of functionalized microtubules propelled by surface-adhered kinesin motor proteins. Using a simple model and measurements of the path persistence length, motional diffusion coefficient, and the distribution of average velocities, we found that, at the time scale relevant in the envisioned nanobiodevices, variations in the time-averaged velocities between shuttles will make a stronger contribution to the dispersion of the swarm than both the fluctuations around the time-averaged velocity of an individual shuttle and the fluctuations in path length due to wiggling within the channel. Overall, the dispersion of such molecular shuttles is comparable to the dispersion of a sample plug transported by electroosmotic flow.
- リンク情報
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- DOI
- https://doi.org/10.1021/nl050586t
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000230571300026&DestApp=WOS_CPL
- URL
- http://www.scopus.com/inward/record.url?eid=2-s2.0-23144454459&partnerID=MN8TOARS
- ID情報
-
- DOI : 10.1021/nl050586t
- ISSN : 1530-6984
- ORCIDのPut Code : 92521128
- SCOPUS ID : 23144454459
- Web of Science ID : WOS:000230571300026