Surface Analytics

  • What we do

    We study solid-fluid interactions, i.e., growth, dissolution, and alteration kinetics. Applications include cement hydration, C-sequestration, engineered bio- and nano-materials, and nuclear waste.

  • What we do

    We study solid-fluid interactions, i.e., growth, dissolution, and alteration kinetics. Applications include cement hydration, C-sequestration, engineered bio- and nano-materials, and nuclear waste.

  • What we do

    We study solid-fluid interactions, i.e., growth, dissolution, and alteration kinetics. Applications include cement hydration, C-sequestration, engineered bio- and nano-materials, and nuclear waste.

Surface Analytics

Raman coupled Vertical Scanning Interferometry (Rc-VSI) is a sophisticated non-contact and minimally invasive technology that allows the investigation of material's surface topographies and composition. By using white light, it is also possible to measure time-dependent changes of the topographies (reaction rates) and their chemistry spatially resolved. Rc-VSI provides a large field of view with a high vertical resolution (typically 1 nm) and can measure topography changes up to 100 microns. Complementary (fast-scan) and high-resolution AFM measurements are possible.

What kind of result do I get?

Rc-VSI produces spatially resolved topographic maps of (almost) any reflective material surface. Data can be used to generate (dissolution/corrosion, and growth/deposition) rate maps in units of [mol/m2/s] and rate spectra, i.e., frequency spectra of the observed rates. The topographic and rate maps can be overlaid precisely with spatially resolved Raman maps of the surface chemistry (and its changes). These data can be complemented with fast-scan and high-resolution AFM measurements.

Area responsible

Prof. Dr. rer. nat. habil. Andreas Lüttge

Klagenfurter Str. 2-4, D-28359 Bremen
Phone: +49 421 218 65233
Email: aluttgeprotect me ?!uni-bremenprotect me ?!.de ;
aluttgeprotect me ?!marumprotect me ?!.de

Application Scientist

Marcos Toro Cadavid
Lab Manager Surface Analytics
MAPEX Center for Materials and Processes
University of Bremen

Klagenfurter Str. 2-4, D-28359 Bremen
Phone: +49 421 218 65229
Email: mtoroprotect me ?!uni-bremenprotect me ?!.de

 

Our key instruments

VSI and Raman

Rc-VSI Bruker / Renishaw
Raman spectroscope coupled with Vertical Scanning Interferometer

  • Raman equipped with 785 nm and 532 nm class 3B lasers
  • Interferometer equipped with 5x; 20x; 50x; 115x objectives
  • White light scanning and monochromatic phase shift modes available
more
fastcan afm image

Bruker Dimension Fast Scan AFM
Atomic force microscope

  • Fast scans can reach> 125 Hz in air or fluid environments 
  • Scan range of 90 µm x 90 µm with a height range of up to 10 µm
  • Reduced noise level: <0.2 nm in-plane and <50 pm out-of-plane
more
AFM microscope

JPK Nanowizard III
Atomic force microscope

  • Sub-nm resolution
  • Compatible with liquid and biological samples 
  • Force spectroscopy mode available
more

More available instruments

More information about the instrumentation available at MAPEX and MAPEX-CF can be found in the Instrument Database of the MAPEX Center for Materials and Processes.

A click on the logo will lead you to the database.

Research Highlights

picture
Surface Analytics|

The role of crystal heterogeneity in alkali feldspar dissolution kinetics

Isabel Lange, Marcos Toro, Rolf S.Arvidson, Inna Kurganskaya, Andreas Lüttge

Geochimica et Cosmochimica Acta (2021) 309, 329-351

https://doi.org/10.1016/j.gca.2021.06.032

Intrinsic heterogeneities of crystals almost always impose challenges on the investigation of dissolution kinetics. In the…


Surface Analytics|

Influence of Processing Route on the Surface Reactivity of Cu47Ti33Zr11Ni6Sn2Si1 Metallic Glass

Erika Soares Barreto, Volker Uhlenwinkel, Maximilian Frey, Isabella Gallino, Ralf Busch and Andreas Lüttge

Metals (2021), 11(8), 1173

https://doi.org/10.3390/met11081173

Recently, laser additive manufacturing (AM) techniques have emerged as a promising alternative for the synthesis of bulk…


Correlated Workflows| Surface Analytics|

Multiscale investigation of olivine (0 1 0) face dissolution from a surface control perspective

Xiaodong Li, Qianqian Wang, Xiaodong Shen, Elisabete T.Pedrosa and Andreas Lüttge

Applied Surface Science (2021), 549, 149317

https://doi.org/10.1016/j.apsusc.2021.149317

The surface reaction of olivine materials is critical for their extensive applications in the global cycle of elements, future…