THIN FILM, MATERIAL PROPERTIES, FUNCTIONALISED SURFACES, ELECTROCHEMISTRY, BIOFOULING.
Friday, June 10, 2011
Advertisement of SPR Navi 200
Tuesday, May 31, 2011
In situ investigations on enzymatic degradation of poly
SPR Bionavis
Q-Sense 4 sample in one Run workhorse
The present study leads to the following conclusion. QCM-D
and SPR can be used to investigate the enzymatic degradation of
a polymer film in real time, where the changes in mass and morphology
of the film can be well described by the frequency and
dissipation in QCM-D as well as the SPR signal response. PCL
with small crystallites degrades in a way of layer-by-layer with
pseudo first-order degradation kinetics. The degradation of PCL
with crystalline lamellae exhibits two-stage kinetics, which relates
to the degradation of amorphous PCL and PCL crystallites,
respectively. The former degrades more quickly than the latter,
leading the film to be microporous
Wednesday, May 25, 2011
Surface Plasmon Resonance (2 Channels/exchangeable cuvette)
Advantages of SPR NAVI 200
• Increased angular range that enables simultaneous gas and liquid-phase measurements
• Contamination-free index matching with a proprietary optical gel
• “Drop-in” sensor plate design• Integrated high-performance liquid handling
• Dual measurement channels for in-line referencing and/or duplicate measurements
• Support for a second laser wave length, for simultaneous determination of RI and thickness
• Automated determination of measurement parameters for sensogram measurement
• High-accuracy sensogram (kinetic) measurements• Easy use of user-defined/modified surfaces
Application notes are provided at our web site: www.bionavis.com
Kulim Kht DP Meeting Helsinki
An Introduction to Biophysical Characterisation
using Dual Polarisation Interferometry
Dual Polarisation Interferometry (DPI) is a highly versatile, powerful analytical technique for
biophysical characterisation of proteins and other biomolecules. It extends the typical dynamic
measurements of conventional biosensors by including an additional quantitative, sub molecular,
conformational measurement.
DPI delivers a unique perspective on biochemistry, linking conformational changes to biochemical activity at a resolution normally associated with ‘big physics.
Two polarisations of light are passed through the
sensor which consists of an upper ‘sensing’ layer
and an embedded ‘reference’ layer. The output
from each of the layers then combine producing two
interference patterns which are detected by a
camera.
As molecules bind (or change shape) on the
surface of the ‘sensing’ layer, they are probed by
the evanescent field from the ‘sensing’ surface.
This, in turn, changes both interference patterns. As
material binds, the interference pattern shifts one
way. As material is removed from the surface, the
interference pattern returns.
The AnaLight® Resolver software automatically analyses both sets of data and outputs the real time
changes in the thickness, density and mass of the molecular layer. All of the calculations are based on
classical optics theory and have been independently validated by, amongst others, the National
Physics Laboratory (NPL) in the UK. www.farfield-group.com
Tuesday, May 10, 2011
Thursday, March 31, 2011
Remembering 2010 Iceland Volcanic Ash

DATE FRIDAY 16, 2010. TIME 16 HOURS
START FROM GOTHENBURG SWEDEN TO LONDON UK.
ENTERING DENMARK
ENTERING GERMANY
ENTERING NETHER LAND
ENTERING BELGIUM
ENTERING FRANCE- DIRECT TO Z1 DU PORT DUNKERQUE
ENTERING UK- DOVER PORT TO DOVER TRAIN STATION
REACH ST. PANCRAS INTERNATIONAL ON SATURDAY 17. 2010 8.30 HOURS. 1600KM
l AM BEING HOLD BY BRITISH M16 OUTSIDE ST. PANCRAS INTL TRAIN STATION
SUSPECTED ME AS TERRORIST, BUT THEN THEY LET ME GO SINCE I GOT NOTHING ON ME . MEET ENGLAND PM GORDON BROWN OUT SIDE THE TRAIN STATION.
PM IS ON HIS ELECTION CAMPAIGN VISITING PUBLIC AT THE TRAIN STATION.
ALL BECAUSE OF VOLCANIC ASH FROM ICELAND.
Saturday, March 26, 2011
SPR Navi 200 specification

SPR Navi 200 specification
1. True goniometric principle, enabling to record the full SPR curve for thickness and refractive index model-ing
2. Wide SPR angle range (40 degrees to 78 degrees) allowing to measure both liquid and gas samples with the same instrument
3. Proprietary SPR slide holder allowing easy change and use of SPR gold slides
4. Easy drop-in action in placing the SPR slide in the instrument
5. Easily removable and easily customizable flow cell
6. Modular design allowing to add an autosampler and other features, such as multi wavelength function, at the later stage
7. No need to use messy and inconvenient index matching oil because of the proprietary index matching gel
8. Open design allowing the customer use their own fluidics and flow control (our pump can easily be by-passed)
9. Build in peristaltic pump and optional syringe pump available
10. Easy to use slide holder allowing quick and easy slide replacement without any tools
11. External immobilizer allowing the instrument be used while immobilizing the gold surfaces
12. Possibility to use two lasers with different wave lengths and/or even IR lasers
13. Optional electrochemistry flow cell
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