University Court of the University of St. Andrews

University of Limerick

Cook Medical Technologies LLC

Laserspec

Christophe Silien

Manfred Buck

Syed A M Tofail

André Peremans

Rafael Madueño

Minna Tuulia Räisänen

John Neilan

David Murray

Aladin Mani

Ning Liu

David Symens

Rabah Mouras

Andre Peremans

Syed AM Tofail

The present invention generally relates to methods for determining the presence and distribution of a polarization active material present in a coating. In one embodiment, the coating is present on an implantable device, for example an implantable stent.

Optical technique for coating characterization

The invention provides a method and system to record the absorption of a sample, said method comprising the steps of providing first and second pulsed beam of light on said sample using one or more light beams, said first and second pulsed beam having different spatial definition; measuring the difference in intensity transmitted through and/or reflected by a sample; and generating an image by scanning the sample while making such measurements. The system and method of the invention can work down to resolution of several 100 of nm, affording thus a large improvement in comparison to synchrotron IR imaging that is the closest technique existing today. The advantage versus scanning probe approach is the absence of physical probe, thus suppressing confinement to surface information and removing uncertainty regarding the working behavior of the probe.

Differential infra red nanoscopy system and method

A method for analyzing a sample with a light probe with a spatial resolution smaller than the wavelength of the light probe comprising the steps of: &#x2014;illuminating the sample by a first light pulse saturating a vibrational and/or electronic transition, said light pulse presenting an intensity spatial distribution on the sample presenting at least one minimum wherein saturation does not occur, &#x2014;measuring the local absorbance properties and/or the local second order non-linear susceptibility of the sample by using a second light pulse forming the light probe at a wavelength corresponding to said electronic and/or vibrational transition, wherein the second light pulse overlap said first light pulse intensity minimum.

Method for high resolution sum-frequency generation and infrared microscopy

The invention provides a method for producing a modified surface () comprising: patterning a surface () by forming thereon a porous molecular network () defined by non-covalent interactions between constituent molecules; and depositing in said porous network () and on said patterned surface () molecules () so as to form a self-assembled monolayer (), wherein both said patterning and said depositing are effected by contact with liquids.

Modified surfaces

Growing community of inventors

Limerick, Ireland

Christophe Silien