Concept

Fluorometer

Publications associées (45)

Fluorescent nanopigments: Quantitative assessment of their quantum yield

In the last few years, an intense research effort has focused on the synthesis of fluorescent nanopigments for functional inks, light harvesting, tagging, tracing, (bio)labeling, imaging, and lighting applications. Moreover, combined with dielectric matric ...

American Institute of Physics2010

Exploring single-molecule dynamics with fluorescence nanoscopy

Marcel Leutenegger

The study of molecular dynamics at the single-molecule level with fluorescence correlation spectroscopy (FCS) and far-field optics has contributed greatly to the functional understanding of complex systems. Unfortunately, such studies are restricted to len ...

Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft2009

Detection of early bladder carcinoma by fluorescence cystoscopy with Hexvix: optical characterization of a high magnification cystoscope

Hubert van den Bergh, Georges Wagnières, Blaise Lovisa

Fluorescence detection of early superficial bladder cancer has been well established over the last years. This technique exploits the selective production and accumulation within cancerous tissues of photoactive porphyrins (PaP), mainly protoporphyrin IX ( ...

SPIE2009

Detection efficiency in total internal reflection fluorescence microscopy

Theo Lasser, Marcel Leutenegger

We present a rapid and flexible framework for the accurate calculation of the detection efficiency of fluorescence emission in isotropic media as well as in the vicinity of dielectric or metallic interfaces. The framework accounts for the dipole characteri ...

2008

Femtosecond Fluorescence and Intersystem Crossing in Rhenium(I) Carbonyl-Bipyridine Complexes

Majed Chergui, Andrea Cannizzo, Amal El Nahhas

Ultrafast electronic-vibrational relaxation upon excitation of the singlet charge-transfer b1A' state of [Re(L)(CO)3(bpy)]n (L = Cl, Br, I, n = 0; L = 4-Et-pyridine, n = 1+) in acetonitrile was investigated using the femtosecond fluorescence up-conversion ...

2008

Microscopy capabilities of the Microscopy, Electrochemistry, and Conductivity Analyzer

Sebastian Gautsch

The Phoenix microscopy station, designed for the study of Martian dust and soil,consists of a sample delivery system, an optical microscope, and an atomic force microscope. The combination of microscopies facilitates the study of features from the millimet ...

2008

Mechanical Design of a Spherical Grating Monochromator for the Microspectroscopy Beamline PolLux at the Swiss Light Source

Simon Nessim Henein

This paper describes a new monochromator design for a bending magnet beamline of the Swiss Light Source synchrotron facility. The beamline optics is based on a horizontally deflecting spherical grating monochromator (SGM) with two gratings at a constant de ...

2007

On the excitation wavelength dependence of the fluorescence of bacteriorhodopsin

Majed Chergui, Erwin Portuondo Campa, Goran Zgrablic, Stefan Haacke, Selma Schenkl

We present a systematic study of the time-integrated fluorescence of native bacteriorhodopsin, as a function of excitation wavelength across the visible absorption band. While the fluorescence max. is unaffected, the spectrum broadens on the high-energy si ...

2007

Single molecule detection at surfaces

Theo Lasser, Marcel Leutenegger, Kai Hassler

Fluorescence fluctuation spectroscopy based on an evanescent field excitation scheme leads to an alternative concept for single molecule detection with interesting experimental features. This concept is described and analyzed regarding the total fluorescen ...

American Chemical Society2007

Volume holographic spectral imaging

Demetri Psaltis, Wei Liu

We report on a volume holographic imaging spectrometer (VHIS) system which allows retrieval of a scene's two-dimensional spatial information as well as its spectral information. This is performed using a transmission volume hologram and a simple rotary sca ...

2005

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