Concept

Synchrotron light source

Related publications (380)

Picosecond X-ray absorption spectroscopy

The photocycle of aqueous ruthenium-(trisbipyridine) [Ru(bpy)3]2+ was studied under high laser excitation intensities and high sample concentrations with picosecond resolved x-ray absorption spectroscopy. In a pump-probe scheme a femtosecond laser pulse pr ...

EPFL2004

Synchrotron microangiography with no contrast agent

Giorgio Margaritondo, Amela Groso

Coherent x-rays from synchrotron sources are increasingly used in non-conventional radiological techniques ('phase-contrast' radiology). Our experiments demonstrate that by using white (unmonochromatic) radiation and a time-resolving system, it is possible ...

2004

Imaging cells and tissues with refractive index radiology

Giorgio Margaritondo, Amela Groso, Yong Yang

Can individual cells, including live cells, be imaged using hard x rays? Common wisdom until now required sophisticated staining techniques for this task. We show instead that individual cells and cell details can be detected in culture solution and tissue ...

2004

Synchrotron X-ray absorption of LaCoO3 perovskite

Rudolf Paul Wilhelm Jozef Struis

LaCoO3 perovskite was prepared at 700degreesC using citrate precursors. The product was then characterized with X-ray diffraction (XRD) and X-ray absorption spectroscopy (XAS). The powder XRD pattern indicates rhomboliedral (R (3) over barc) or its monocli ...

Elsevier2004

Electronic structure of a quasi-one-dimensional insulator: The molybdenum red bronze K0.33MoO3

Giorgio Margaritondo, László Forró, Marco Grioni, Luca Perfetti, Neven Barisic

High-resolution angle-resolved photoemission (ARPES) displays quasi-one dimensional (1D) electronic states in the insulating molybdenum red bronze K0.33MoO3, in good qualitative agreement with band structure calculations. Combined ARPES, optical conductivi ...

2004

Thickness dependent loss function of Si with 0.14 eV energy resolution

Cécile Hébert

The use of electron energy loss spectroscopy (EELS) in determining the electronic properties of Si and thickness dependent loss function of Si with 0.14 eV energy resolution were investigated. The dielectric response function was used to describe the inter ...

2004

Direct photoemission spectroscopy and electronic properties of in situ grown, strained high-T-c and related oxide films

Giorgio Margaritondo, Davor Pavuna, Dusan Vobornik, Dominique Cloëtta, Mike Abrecht

We have optimized laser ablation thin film deposition and transfer procedures within synchrotron vault, specifically to perform angle-integrated and angle-resolved photoemission spectroscopy (ARPES) on high-T-c and related films without cleaving the sample ...

2004

Synchrotron radiation in radiology: novel X-ray sources

Giorgio Margaritondo, Reto Meuli

X-rays, the key ingredient of radiology, are still primarily produced with the mechanism discovered by Rontgen over one century ago. A different approach, however, is becoming increasingly important: the use of synchrotron sources based on fast-moving elec ...

Springer-Verlag2003

Electronic structure of electrochemically Li-inserted TiO2 studied with synchrotron radiation electron spectroscopies

Ulf Anders Hagfeldt

The electronic properties were studied of TiO2 and electrochem. Li-inserted TiO2 using synchrotron radiation photoelectron spectroscopy and x-ray absorption spectroscopy (XAS) in conjunction with resonant photoelectron spectroscopy. Core level (Ti 2p) and ...

2003

Edge-enhanced radiology with broadband synchrotron X-rays

Giorgio Margaritondo, Amela Groso

Broadband synchrotron X-rays with limited coherence can be used for high resolution phase contrast radiology. Our experimental results confirm the prediction that the extreme spatial coherence of third-generation synchrotron sources although helpful but no ...

2003

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