Materials Literature
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The influence of a CdSexS1-x interfacial alloyed layer on the photophysical properties of core/shell CdSe/CdS nanocrystal quantum dots (QDs) is investigated by comparing reference QDs with a sharp core/shell interface to alloyed structures with an intermediate CdSexS1-x layer at the core/shell interface. To fully real…
When X-ray energy is close to the absorption edge, the anomalous scattering factor changes drastically and the determination of the real part f' ( E ) becomes important for crystal-structure analyses. The resonant X-ray diffraction technique has been applied to distinguish crystallographically independent sites of mag…
An atmospheric pressure plasma system has been developed to prepare zinc oxide (ZnO) thin film on the silicon substrate. The precursor of dry powder of Zinc acetylacetonate hydrate was directly sublimated as vapor and carried by Argon into the downstream of Nitrogen plasma jet. The films deposition process was carried…
We describe a micro-Raman setup allowing for efficient resonance Raman spectroscopy (RRS), i.e., mapping of Raman spectra as a function of tunable laser excitation wavelength. The instrument employs angle-tunable bandpass optical filters which are integrated into software-controlled Raman and laser cleanup filter devi…
A pH-responsive dendrimer templated polymer-calcium phosphate core shell nanostructure is developed. Upon exposure to cellular lysosomal pH, a guest anticancer drug is released from the nanocapsule by dissolution of the CaP shell. Such a stimuli responsive carrier enables on-demand controlled release of drugs in acidi…
Progress in the development of synchrotron radiation sources, x-ray optics and detectors brings new possibilities in x-ray instrumentation. At the P10 beamline of PETRA III, a unique rheology / SAXS setup was successfully integrated and commissioned to gain new insight in the molecular arrangement of complex fluids an…
This paper describes the preliminary design of the BioMAX beamline at the 3 GeV ring of the MAX IV facility, focusing on the optics and x-ray beam performance. The MAX IV facility will include two storage rings with 1.5 GeV and 3.0 GeV electron energy and a linac serving both as injector for the two rings and feeding…
We report the development of a time-resolved XEOL (TR-XEOL) system that employs an optical streak camera. We have conducted TR-XEOL experiments at the Canadian Light Source (CLS) operating in single bunch mode with a 570 ns dark gap and 35 ps electron bunch pulse, and at the Advanced Photon Source (APS) operating in t…
The study of the haemocompatibility of nanomaterials that could be in contact with blood (e.g. nanoparticle (NP)-based drug-delivery system) is of major importance. The primary objective of this study was to compare the ability of six platelet functional tests to assess the impact of NPs on platelet function. The seco…
A chemical pattern consisting of end-grafted polystyrene brushes (20 nm lines on a 40 nm pitch) on the native oxide of silicon wafers was defined by molecular transfer printing from assembled block co-polymer films. End-grafted hydroxyl-terminated poly(2-vinyl pyridine) brushes were selectively deposited in the inters…
Based on the transmittance spectra modeling, spectroscopic methods were developed to determine the optical constants of glass materials including extinction coefficient and refractive index. The transmittance spectrograms of ZnSe glass slabs at normal incidence with different thicknesses in the infrared wavelength 0.8…
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The high-magnetic-field magnetization measurements of Heusler alloys, Fe2MnSi and Fe2Mn0.8V0.2Si, were performed up to 27 T, and the magnetization \(M\) vs \(T\) measurements were carried out up to 12 T. We observed a magnetic anomaly at 64 K, which persisted even for high magnetic fields at 12 T. We investigated the…
This work reports a recently developed electro-optical (EO) device that can potentially be used as a light shutter or a privacy window. By using nanocrystalline cellulose rods, we were able to improve some of the most relevant parameters characterising the EO behaviour. A brief description of the proposed working mech…
Glass fiber epoxy composites are widely used in industries. Liquid epoxidized natural rubber was added to epoxy as the matrix for a fiber-reinforced composite in order to improve its mechanical properties whilst E-glass fiber was used as the composite reinforcement. Flexural test, Izod impact test, tensile test, therm…
This study, composed of three parts, aims at studying the crystallization behaviors of PbSe quantum dots ( QD s) in silicate host glasses. Firstly, due to the importance of the choice of base glass for the QD s' crystallization, the selection of base glass compositions, the glass fragility, and glass formation ability…
Wood plastic composite, known as green composite, combines natural vegetable fibers and plastic and thus acquires the properties of both. In this study, coir was subject to alkali treatment to eliminate pectin, hemicelluloses, fat and impurities. Alkali treatment reduces the weight of coir and the greater the concentr…
The Helmholtz Center Berlin (HZB) and the Max-Planck Society (MPG) strengthen their research in renewable energies with the implementation of the joint Energy Material in-Situ Lab Berlin (EMIL) at the third generation light source BESSY II. The new facility is dedicated to the in-situ and in-system x-ray analysis of m…
A matrix EPR spectroscopy study of the low temperature γ radiolysis of precipitated (Zeosil) and mesoporous high surface silica has afforded evidence of the formation of trapped H-atoms, H-atom centers, siloxy radicals ≡Si-O(•), anomalous silyl peroxy radicals ≡Si-OO(•) with reduced g tensor anisotropy, siloxy radical…
This paper describes a successful technological transfer, from a state laboratory to an industrial company, for writing long and large submicron period gratings (potentially square-meter sized), implemented in an industrial direct laser beam writing equipment at 355 nm wavelength (Dilase 750 from KLOE SA company). The…