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Optical tweezers with enhanced efficiency based on laser-structured substrates
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10.1063/1.4728992
/content/aip/journal/apl/101/1/10.1063/1.4728992
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/1/10.1063/1.4728992

Figures

Image of FIG. 1.
FIG. 1.

Schematic diagram of the optical trap based on microstructured silicon substrates.

Image of FIG. 2.
FIG. 2.

(a) and (b) SEM images (viewed at 45°) of laser microstructured silicon substrates, corresponding to different laser fluences. Inset: magnified view of a silver-coated substrate.

Image of FIG. 3.
FIG. 3.

Trapping force on 900-nm polystyrene beads as a function of laser power for various substrates. The different substrates are: (a) the laser microstructured silicon sample shown in Fig. 2(a) with well-formed microspikes, coated with a 80-nm silver layer (squares), (b) the laser microstructured silicon sample shown in Fig. 2(b), coated with a 80-nm silver layer (circles), (c) a flat, unprocessed silicon wafer, coated with a 80-nm silver layer (triangles), and (d) a laser microstructured silicon sample with well-formed microspikes, without a silver layer (diamonds).

Tables

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Table I.

Effective trapping quality factor, Q, for various substrates.

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/content/aip/journal/apl/101/1/10.1063/1.4728992
2012-07-03
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optical tweezers with enhanced efficiency based on laser-structured substrates
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/1/10.1063/1.4728992
10.1063/1.4728992
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