Junesch, Juliane

Project

Electrochemisty and Plasmonic in nanowells and nanopores for biosensing applications

The study of artificial membranes plays an important role in biomedical research in order to get an insight into cell to cell interaction, which is often based on transport through their membranes. This is why the permeability and transport rate of the membrane for different molecules plays an important role in understanding intercellular processes. To mimic and analyse these in-situ transport phenomena, we are developing model systems that allow the investigation of mass transport processes by optical and electrochemical measurements. These nanodevices are made up of an array of nanoholes in thin metal films and dielectrics. While the nanowell allow for capturing the analyte in small confinements, the nanopore makes it possible to flow the solution through, which makes it diffusion independent.

Nanowells

Nanopores

Publications

“Optical Properties of Nanohole Arrays in Metal–Dielectric Double Films Prepared by Mask-on-Metal Colloidal Lithography
J.Junesch, T. Sannomiya, T. Sannomiya, A.Dahlin
ACS Nano (2012) 6 (11), pp 10405–10415 DOI: 10.1021/nn304662e

“Imaging, Spectroscopy and Sensing with Single and Coupled Metallic Nanoparticles
T. Sannomiya, J. Junesch, P.Rajendran
Optical Imaging: Technology, Methods and Applications, Editors: Akira Tanaka and Botan Nakamura, Nova Science Publishers, April 2012

“Large yield production of high mobility freely suspended graphene electronic devices on a PMGI based organic polymer"
N. Tombros, A. Veligura, J. Junesch, J.J. van den Berg , P. J. Zomer, M. Wojtaszek, I. J. Vera Marun, H. T. Jonkman , B. J. van Wees
Journal of Applied Physics (2011) 109, 093702-093705 DOI:10.1063/1.3579997

“Quantized conductance in a suspended graphene nanoconstriction"
N. Tombros, A. Veligura, J. Junesch, M. H. D. Guimarães, I. J. Vera Marun, H. T. Jonkman , B. J. van Wees
Nat Phys (2011) 7, 697-700, DOI:10.1038/nphys2009

Conferences

Poster Presentations

• “Novel Biosensing Using Nanohole Arrays in Metal–Dielectric Double Films “ J. Junesch, T. Sannomiya, A. Dahlin, J.Vörös
  2nd international Conference on Biomaterials Science (ICBS2013), March 19-22, 2013, Tsukuba, Japan
• “Fabrication and Characterization of suspended plasmonic nanopores for biosensing application” J. Junesch, T. Sannomiya, J.Shi, Y.Nakamuro, J.Vörös
  Tokyo Tech-Tsinghua University Joint Symposium on Nano-Technology and Nano-Materials,
  November 14-16, 2012, Kyoto, Japan
• “Combining electrochemistry and plasmonics in nanowells- A new biosensor for membrane transport” J. Junesch, A. Dahlin, J. Vörös
  Physical Chemistry of Biointerfaces II, July 9-14, 2012 San Sebastian, Spain
• “Electrochemistry and plasmonics in nanowells – a novel sensing device for membrane transport” J. Junesch, J. Vörös, A. Dahlin
  Gordon Research Conference on Biointerface Science (GRS) May 19-20, 2012, Les Diablerets, Switzerland
• “Novel Nanowell Structure for Plasmonic and Electrochemical Biosensing Devices” J. Junesch, J. Vörös , A. Dahlin
  Nanoplasmonic Sensors and Spectroscopy 2011, September 19-22, Chalmers, Göteborg, Sweden
• “Lipid Bilayer Formation on Nb₂O₅” J. Junesch, J. Vörös, A. Dahlin
  QCM-D Scientific World Tour 2011, September 14-15 2011, Bensheim, Germany
• “A new sensing device for membrane transport using electrochemistry and plasmonics in nanowells” J. Junesch, J. Vörös, A. Dahlin
  CUSO postgraduate school in electrochemistry; Scanning Electrochemical Microscopy (SECM) as a tool for surface reactivity characterization and modification, June 21-23 2011 Ecole Polytechnique Fédérale de Lausanne, Lausanne Switzerland

Education

• 09/2010 - 02/2011 Master of Applied Physics, University of Groningen, Netherlands. "Quantized Conductance and Quantum Hall Effect in Suspended Graphene"
• 09/2009 - 07/2010 Erasmus Exchange, University of Groningen, Netherlands
• 10/2006 - 07/2009 Studies in Nanotechnology (Nanostrukturtechnik), University of Würzburg, Germany

Professional Experience

02/2009 - 04/2009 Internship, Beckman Coulter Biomedical Munich, Germany (Single Cell Analysis)