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  Optical and thermophoretic control of Janus nanopen injection into living cells

Maier, C. M., Huergo, M. A., Milosevic, S., Pernpeintner, C., Li, M., Singh, D. P., et al. (2018). Optical and thermophoretic control of Janus nanopen injection into living cells. Nano Letters, 18, 7935-7941. doi:10.1021/acs.nanolett.8b03885.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000B-268E-B Version Permalink: https://hdl.handle.net/21.11116/0000-000E-4C1E-D
Genre: Journal Article

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 Creators:
Maier, Christoph M., Author
Huergo, Maria Ana, Author
Milosevic, Sara, Author
Pernpeintner, Carla, Author
Li, Miao, Author
Singh, Dhruv P., Author
Walker, Debora, Author
Fischer, Peer1, Author                 
Feldmann, Jochen, Author
Lohmüller, Theobald, Author
Affiliations:
1Max Planck Institute for Medical Research, Max Planck Society, ou_1125545              

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Free keywords: Janus nanoparticles; plasmonics; optical tweezer; cell injection; thermophoresis; biomolecule delivery
 Abstract: Devising strategies for the controlled injection of functional nanoparticles and reagents into living cells paves the way for novel applications in nanosurgery, sensing, and drug delivery. Here, we demonstrate the light-controlled guiding and injection of plasmonic Janus nanopens into living cells. The pens are made of a gold nanoparticle attached to a dielectric alumina shaft. Balancing optical and thermophoretic forces in an optical tweezer allows single Janus nanopens to be trapped and positioned on the surface of living cells. While the optical injection process involves strong heating of the plasmonic side, the temperature of the alumina stays significantly lower, thus allowing the functionalization with fluorescently labeled, single-stranded DNA and, hence, the spatially controlled injection of genetic material with an untethered nanocarrier.

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Language(s): eng - English
 Dates: 2018-11-222018-09-262018-11-232018-12-12
 Publication Status: Issued
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/acs.nanolett.8b03885
BibTex Citekey: 2018maier
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Title: Nano Letters
  Abbreviation : Nano Lett.
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 18 Sequence Number: - Start / End Page: 7935 - 7941 Identifier: ISSN: 1530-6984
CoNE: https://pure.mpg.de/cone/journals/resource/110978984570403