IUVS Beamline

Welcome to the Inelastic UltraViolet Scattering Beamline @ Elettra

The IUVS beamline is dedicated to the study of inelastic scattering with ultraviolet radiation, in a time-space domain not accessible at present by other facilities. In the inelastic scattering process, an incident photon, with energy Ei and momentum Ki interacts with the matter. In this interaction the photons can be diffused, with energy Es and momentum Ks. Here q=Ks-Ki is called "exchanged moment" and is of considerable importance in the study of inelastic diffusion. We can define the “elastic scattering” when the incident photon energy is the same of the diffused one while we refer to “inelastic scattering” when there is an energy variation. It is important to point out that q is directly dependent on the time and energy as well as from the speed of light in the sample (and therefore on its refractive index).

Research Highlights

Sound dispersion in water

The dynamic structure factor of normal and supercooled liquid water has been measured at a momentum transfer Q≈0.02-0.1  nm-1, in the temperature range 253–340 K.


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UV Resonant Raman scattering set-up at the IUVS beamline

At the IUVS beamline we have developed  a new resonant Raman scattering instrument working in the UV spectral range.

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Relaxation time on biological solutions: the example of acetic acid

Interactions between water and proteins play a fundamental role in biochemistry. In particular, the comprehension of the interaction mechanisms involving carboxylic and ammine groups is a starting point for understanding the protein folding mechanisms.

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Oxidative damage in DNA bases revealed by UV resonant Raman spectroscopy

We report on the use of the UV Resonant Raman technique to monitor the oxidative damage of deoxynucleotide triphosphates (dATP, dGTP, dCTP and dTTP) and DNA (plasmid vector) solutions. 

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Lyotropic Liquid-Crystalline Nanosystems as Drug Delivery Agents for 5‑Fluorouracil: Structure and Cytotoxicity

Lyotropic cubic liquid-crystalline systems have received increasing attention due to their unique microstructural and physicochemical properties as efficient nanocarriers for drug delivery.

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Tuning structural parameters for the optimization of drug delivery performance of cyclodextrin-based nanosponges

Cyclodextrin nanosponges (CDNS) represent a versatile class of cross-linked cyclodextrin (CD)-based nanoporous polymers. Their intriguing properties, including safety, marked swelling behavior, superior inclusion capability with respect to native CD, are the bases for potential for applications in drug delivery, tissue engineering and regenerative medicine.

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The peculiarity of IUVS is the specific kinematic region that can be investigated. IUVS beamline delivers photons with incident energy between 5 and 11 eV.  The incident photons that are inelastically diffused by the sample can be analysed by exploiting the two different and complementary experimental set-up available on the beamline, i.e. UV Brillouin and UV Resonant Raman scattering instruments, in order to probe both the acoustic and optical phonons propagating in the system. This allows to acquire information about the structure and dynamics of the constituent matter over different length scales through the analysis of its collective and molecular vibrations.

The almost-backscattering configuration of Brillouin setup, with scattering angle theta of 178 degree, allows an exchanged momentum range of 2*10-2-2*10-1nm-1, corresponding to 10-1000 µeV scattered energy. Therefore it can investigate a S(q,ω) kinematic region not accessible at present by other experimental techniques as Brillouin scattering with visible light, X-Ray scattering and neutron scattering.

The more recently realized experimental setup that enables to perform UV Resonant Raman spectroscopy using synchrotron radiation in the range of wavelengths 200-270 nm provides a fine tunable source in the deep-UV for mapping a wide resonance landscape range in different samples, from nanostructures and strongly correlated materials to biophysical and biochemical systems.

User's News

Proposal Submission

We invite users and collabrators to discuss thier proposals with the beamline local contacts well in advance before the submission deadline. This is crucial for a careful assesment of the experiment feasibility and may lead to improvements in the proposed experimental plan. In a restricted number of cases, when doubts arise about the suitability of your samples (sample absorption etc), it may be possible for you to arrange a test. Our website provides a wealth of informaiton on experiment feasibilty and proposal submission. For more info, please vist the IUVS Users section.

Call for proposals

The deadline for proposal submission for beamtime allocation from January 1st to June 30th, 2017 will be September 15th, 2016.

Last Updated on Friday, 19 January 2018 11:19