Research Interests:
... Title: Near-field and confocal scanning spectroscopy/microscopy of porphyrin wheels. Authors: DeSchryver, FC De Feyter, Steven Grim, Kees Faes, Herman Hofkens, Johan Jeuris, Karin Latterini, L Nolte, RJ Rowan, A Ruiter, M Schenning, A... more
... Title: Near-field and confocal scanning spectroscopy/microscopy of porphyrin wheels. Authors: DeSchryver, FC De Feyter, Steven Grim, Kees Faes, Herman Hofkens, Johan Jeuris, Karin Latterini, L Nolte, RJ Rowan, A Ruiter, M Schenning, A Vanoppen, P. Issue Date: Jan-1997. ...
Research Interests:
Research Interests:
... The commercial NSOM instrument (Topometrix Aurora model) was modified by replacing the 670 nm diode laser that is used for shear-force feedback with a 980 nm diode laser in order to allow for the detection of fluorescence of the... more
... The commercial NSOM instrument (Topometrix Aurora model) was modified by replacing the 670 nm diode laser that is used for shear-force feedback with a 980 nm diode laser in order to allow for the detection of fluorescence of the porphyrin wheels (λ max 665 nm, see below ...
Research Interests:
Research Interests:
Phase transitions of amphiphilic copolymer solutions can be achieved by irradiating aqueous solutions of this polymer with an IR-laser beam. As a result, a single microparticle up to 15 μm is formed, whereas thermal heating of the... more
Phase transitions of amphiphilic copolymer solutions can be achieved by irradiating aqueous solutions of this polymer with an IR-laser beam. As a result, a single microparticle up to 15 μm is formed, whereas thermal heating of the solution results in submicrometer particles. Both the photo-thermal effect (due to absorption of 1064 nm by the H2O overtone) and the radiation force cause the unusual large particle formation (up to 15 μm). Furthermore, the present study shows that the conformational distribution and associations of polymers in solution can be controlled with the radiation force of a focused laser beam.