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Prof. Dr. rer. nat. Johannes Barth

Photo von Prof. Dr. rer. nat. Johannes Barth.
Phone
+49 89 289-12609
Room
PH II: 211
E-Mail
jvb@tum.de
dekan@ph.tum.de (Dean of the Physics Department)
Links
Homepage
Page in TUMonline
Group
Physics of Surfaces and Interfaces
Job Titles
  • Dean of the Physics Department
  • Department Council Member: Dean
  • Professorship on Physics of Surfaces and Interfaces
Additional Info
********************************************************************************************************************** °°°PLEASE ADDRESS EMAIL & REQUESTS CONCERNING DEPARTMENTAL ISSUES TO°°° ---------------------------------------------> dekan@ph.tum.de <--------------------------------------------- **********************************************************************************************************************
Consultation Hour
Mo nachm. / Mi vorm

Courses and Dates

Title and Module Assignment
ArtSWSLecturer(s)Dates
Molecular Nano-Science (Colloquium for Ph.D. Students) Assigned to modules:
KO 2 Barth, J. Fri, 14:00–16:00, PH II 227
FOPRA Experiment 35: Electron Spectroscopy at Surfaces Assigned to modules:
PR 1 Barth, J.
Assisstants: Allegretti, F.Haag, F.
FOPRA Experiment 83: Scanning Tunnelling Microscopy & Molecular Imaging Assigned to modules:
PR 1 Barth, J.
Assisstants: Jing, C.Papageorgiou, A.Ran, W.
FOPRA Experiment 89: Basic Techniques of Surface Physics Assigned to modules:
PR 1 Barth, J.
Assisstants: Allegretti, F.Küchle, J.
Revision Course to Seminar to Fundamentals of Surface and Nanoscale Science Assigned to modules:
RE 2
Responsible/Coordination: Barth, J.
Seminar on scientific methods in surface physics Assigned to modules:
SE 2 Barth, J. Thu, 12:00–14:00, PH II 227
Seminar on current topics in surface physics Assigned to modules:
SE 2 Barth, J. Thu, 10:00–12:00, PH II 227
Presentations within TUM Faculty Recruitment and Career System This course is not assigned to a module.
KO 0.1
Responsible/Coordination: Barth, J.
singular or moved dates

Offered Bachelor’s or Master’s Theses Topics

Assembling dye molecules on surfaces to tune their optical properties

In this project you will use scanning tunnelling microscopy under ultra-high vacuum conditions to provide a single molecule characterisation on how small dye molecules arrange and polymerise on surfaces. Such arrangements are expected to be able to tune the colour of the resulting structure.

Indigo is a natural dye of the namesake colour. Changing the chemical structure of its periphery changes its colour, giving rise to the class of indigoide molecules. Here we will use such a naturally occurring indigoide molecule, specifically chosen for its potential to be further functionalised on a planar metal surface. The aim is to use the insight provided from advanced microscopy characterisation, in order to provide a methodology for nanostructures with tuneable optical properties.

suitable as
  • Bachelor’s Thesis Physics
Supervisor: Johannes Barth
Tethering of molecular sensitizers on solar cell surfaces

Titanium dioxide is a semiconductor widely used in solar cells. To harness the energy of the solar spectrum, it is sensitised with dyes which are bound by single or dual tethers. Most commonly these anchors are carboxylate groups, however catecholates and hydroxamates are also reported as convenient and robust alternatives.

With this project we aim to provide a comparative study on the microscopic events that lead the different tethers to guide the adsorption of molecular dyes on model titania surfaces. Scanning tunnelling microscopy under ultra-high vacuum conditions and at a temperature range of 250 to 350 K will be used as a convenient tool to provide real-space information about the adsorption and diffusion of single and dual anchors on single crystal surfaces of titanium dioxide.

suitable as
  • Master’s Thesis Condensed Matter Physics
  • Master’s Thesis Applied and Engineering Physics
Supervisor: Johannes Barth
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