Internship: Scaling up: printing catalytic nanodots by Dip-Pen Nanolithography

Dip-Pen Nanolithography (DNP) with cantilever arrays can be considered as scaling up technology in comparison with classical AFM/DPN. In AFM and classical DPN a cantilever with one sharp tip is normally used, however in parallelized DNP it is substituted by a 1D array with tens of tips (typically 26 to 40) or even tens of thousands of tips in 2D arrays. DPN has been proved to print peptide membranes and low density polymers. However, by using this technique not only material transfer can be performed, but also a change of chemical composition of transferred material. In this manner, school-studied galvanization process, i.e. dissociation of the electrolyte in local electrical field and deposition of the product in one of the electrodes, can be transferred to nanosized reaction volumes.

In the set up an electrical field is applied between the tip (arrays of tips) covered with metallic salt and a wafer. In the conditions of high humidity a microdroplet of condensed water between the tip and the wafer will serve as a reaction media, resulting in deposition of metal on one of the electrodes depending on field direction. Structures of different shape and size starting from only 0.2nm are possible to write. Here the stability of the system, the amount of salt, the speed of writing and other parameters are crucial. Therefore, the systematic approach to verify the best writing parameters is necessary. The project is aimed at reproducible fabrication of metallic nanodots, serving as catalytic systems.

The project will include fabrication of metallic nanodots by galvanic AFM and DNP, morphological and optical characterization of material and investigation of catalytic properties of the structures. Further information about the project can be provided upon request, please contact Dr. Julia Syurik (julia.syurik@kit.edu).

Further information on the Institute of Microstructure Technology (IMT): http://www.imt.kit.edu/english/index.php

Weitere Informationen

Unternehmen

Helmholtz Gemeinschaft

Standort

Karlsruhe, Baden-Württemberg, Deutschland

Anstellungsart

Praktikum

Vertiegungsgebiet

Forschung und Entwicklung

Ansprechpartner/in

Fachliche Auskünfte erteilt Ihnen gerne Dr. Julia Syurik, IMT, phone: +49 721 608-24062 (e-mail: julia.syurik@kit.edu)

Bewerbung:
Bitte senden Sie Ihre Bewerbung online unter Angabe der Stellenausschreibungsnummer IMT 12-16 an Frau Berger, Berufliche Ausbildung, Telefon 0721 608-25184.
Bei entsprechender Eignung werden schwerbehinderte Bewerber/innen bevorzugt berücksichtigt.

Anforderungen

Field of study: Mechanical engineering, chemistry

Link zum Jobangebot

zum Jobangebot