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PD Dr. Peter Zahn

Phone: +49 351 260 3121
E-mail: nanonet@hzdr.de

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PD Dr. Artur Erbe

Phone: +49 351 260 2366
E-mail: a.erbe@hzdr.de

Deputy spokesperson
Prof. Dr. Gianaurelio Cuniberti

Phone: +49 351 463 31414
E-mail: g.cuniberti@tu-dresden.de

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News

2017-08-21/23
Nanoscience: A personal perspective, course by Robert M. Metzger (U Alabama), TU Dresden, Agenda (PDF)

2017-08-16/18
NanoNet Annual Workshop, near Dresden

2017-05-29
IPF director Prof. Dr. Brigitte Voit received the Sächsische Verdienstorden presented by the Prime Minister Stanislaw Tillich. Our warmest Applause.
More Info

Temperature-Dependent Charge Transport through Individually Contacted DNA Origami-Based Au Nanowires,
Langmuir 32, 10159–10165 (2016)
Read more ...

Persulfurated Coronene: A New Generation of 'Sulflower',
JACS 139, 2168-2171 (2017)

Events

2017-07-31/08-04
EP2DS22-MSS18 Intern. Conference, Pennsylvania State College, PA, USA

2017-08-03/05
Presentation & Communication (Y2), Stuttgart, DE (internal event)

2017-08-16/18
NanoNet Annual Workshop, Neuklingenberg (near Dresden)

2017-08-21/23
Nanoscience: A personal perspective, NanoNet Block course by Robert M. Metzger (U Alabama, US), Dresden, Agenda (PDF)

2017-08-21
cfaed Summer Homecoming & PhD Farewell, Dresden

2017-08-29/09-02
Flatlands 2017, Lausanne, CH

2017-08-29/09-02
ECME 2017 - Europ. Molecular Electr. Conf., Dresden

2017-09-01
5DNS - Dresden Nanoanalysis Symposium, Dresden

2017-09-04/05
Nano-Bio-Sensors 2017, Dresden

2017-09-11/15
Intl. Summer School DCMS Materials 4.0, Dresden

2017-09-18/20
Career & Leadership Course (Y3), Magdeburg, DE (internal event)

2017-09-18/22
Dresden Microelectronics Academy (DMA)

2017-11-06
NanoNet PhD-Seminar 2017-2, HZDR

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Acknowledgment

The IHRS NanoNet is funded by the Initiative and Networking Fund of the Helmholtz Association (VH-KO-606).

Topography-controlled alignment of DNA origami nanotubes on nanopatterned surfaces

Bezuayehu Teshome, Stefan Facsko, Adrian Keller

The controlled positioning of DNA nanostructures on technologically relevant surfaces represents a major goal along the route toward the full-scale integration of DNA-based materials into nanoelectronic and sensor devices. Previous attempts to arrange DNA nanostructures into defined arrays mostly relied on top-down lithographic patterning techniques combined with chemical surface functionalization. Here we combine two bottom-up techniques for nanostructure fabrication, i.e., self-organized nanopattern formation and DNA origami self-assembly, in order to demonstrate the electrostatic self-alignment of DNA nanotubes on topographically patterned silicon surfaces. Self-organized nanoscale ripple patterns with periodicities ranging from 20 nm to 50 nm are fabricated by low-energy ion irradiation and serve as substrates for DNA origami adsorption. Electrostatic interactions with the charged surface oxide during adsorption direct the DNA origami nanotubes to the ripple valleys and align them parallel to the ripples. By optimizing the pattern dimensions and the Debye length of the adsorption buffer, we obtain an alignment yield of [similar]70%. Since this novel and versatile approach does not rely on any chemical functionalization of the surface or the DNA nanotubes, it can be applied to virtually any substrate material and any top-down or bottom-up nanopatterning technique. This technique thus may enable the wafer-scale fabrication of ordered arrays of functional DNA-based nanowires.

NANONET PUBLICATION Abstract Nanoscale 2014

Publication: Nanoscale 2014, 6 (3), 1790-1796

DOI: http://dx.doi.org/10.1039/C3NR04627C

Press Release: Ausgerichtete DNA-Drähte für die Nanoelektronik (in German)