A new paramagnetic defect in solid ${\mathrm{C}}_{60}$ was produced by nitrogen implantation ${\mathrm{C}}_{60}$. The hyperfine splitting and the isotope effect unambiguously show that center contains one nucleus. interaction is isotropic, its value comparable to of free atom, spin electron system $S\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}3/2$, as atomic nitrogen. complex responsible for this soluble toluene C${\mathrm{S}}_{2}$ stable. We suggest consists inside

Abstract Ag 2+ centres are produced in doped and appropriately treated AgCl crystals by irradiation with blue light at 20 ° K. It is shown that the only purpose of preceding treatment to create a high concentration electron traps. In chalcogen (AgCl:S, Se, Te) traps formed pre‐irradiation above 120 K; iron incorporated Fe ions converted 3+ , acting as traps, either C or annealing chlorine gas. As paramagnetic data localized independent kind impurity, one must conclude hole trapped...

Abstract In the framework of EC project STORHY (Hydrogen Storage for Automotive Applications), prototype a solid storage tank hydrogen based on sodium alanate was developed. A containing 8 kg designed and manufactured with objective fast refueling. To obtain optimum design simulation tool developed validated by experiments laboratory‐scale tubular reactor. Application to different concepts geometries yielded final design. The chosen concept is modular, enabling simple scale‐up. This basis...

Collective cell migration is a key driver of tissue morphogenesis and cancer invasion. Here, we identified the tumor suppressor Ras association domain-containing protein 8 (RASSF8) as WAVE interactor required for border migration. RASSF8 colocalizes with F-actin adhesion molecules at cell– contacts. Loss function results in cohesion defects, phenotype associated changes localization Echinoid (Ed) Coracle (Cora). Cell-type-specific RNA interference (RNAi) experiments suggest that defects are...

Abstract In Si: Au rapidly quenched two centres are observed by EPR, the first of which is investigated in this paper. The spectrum, characterized a dominating Zeeman interaction and nuclear quadrupole large compared to hyperfine interaction. Passage conditions depend on direction magnetic field. lattice site gold atom localized trigonal distortion supposed be an interstitial one.

Abstract ESR measurements are made on Ni‐doped AgCl at low temperatures. As in the case of AgBr:Ni, already investigated, a line with isotropic g ‐value is found, due to isolated Ni 2+ . Moreover an angular dependent spectrum nearly [100]‐axial symmetry observed, which attributed complexes silver vacancy. Contrary results AgBr:Ni structure anisotropic observed small range, may be explained only by presence very orthorhombic perturbations. It shown, that these perturbations different...

Abstract AgCl‐ and AgBr‐crystals, containing divalent nickel, incorported partly isolated in association with silver vacancies, are irradiated light at low temperatures. Hereby the nickel ions converted to monovalent state.

Cell motility is crucial for many biological processes including morphogenesis, wound healing, and cancer invasion. The WAVE regulatory complex (WRC) a central Arp2/3 regulator driving cell downstream of activation by Rac GTPase. CYFIP-related Rac1 interactor (CYRI) proteins are thought to compete with WRC interaction in feedback loop regulating lamellipodia dynamics. However, the physiological role CYRI vivo healthy tissues unclear. Here, we used Drosophila as model system study function at...

Two similar defects in silicon, resulting from doping with platinum an atmosphere containing water vapor, were studied by means of electron paramagnetic resonance. Both spectra have effective spin S=1/2, and exhibit platinum- hydrogen-related hyperfine structure remarkable behavior under band-gap illumination. One the centers has been identified recently reported Pt-${\mathrm{H}}_{2}$ complex. Ligand interaction values localization on two silicon neighbors protons measured found to support...

Abstract The interpretation of the EPR spectrum suggests two alternative models: five gold atoms or three with boron atoms, respectively, form a cluster occupying lattice sites and adjacent interstitial sites. This tends to further precipitation. Both paramagnetic gold‐related centres – that one atom are assumed belong group acceptor levels in Si:Au.

Abstract Irradiation of AgBr:Te or AgBr:Se with green light at about 180°K produces a paramagnetic centre. It will be shown by investigation the angular dependence g ‐values, superhyperfine structure, and hyperfine structure that centre has orthorhombic symmetry, consists two equivalent impurity anions strongly interacts bromine ions.

Abstract The ESR spectrum of AgBr:Se crystals which have been irradiated at 120 °K with green light is changed by heating the to 170 °K. obtained after was recently investigated and attributed a Se centre. In present paper observed before analyzed regard g ‐values, superhyperfine hyperfine structure. This also found be due centre ortho‐ rhombic symmetry two centres differ in their surroundings model this situation developed. investigations are extended AgCl:Se.

EPR measurements of hydrogen-treated Si:Pt single crystals reveal a pair equivalent Pt ions on next-nearest-neighbor sites. The g values and hyperfine parameters differ essentially from those previously detected center; therefore, an additional constituent in at least one the complexes is suggested. Possible models with adjacent defects having spin states S=0 or 1/2, respectively, are offered.

Abstract Die dielektrischen Verluste von Silberhalogenidkristallen, die zweiwertige Verunreinigungen enthalten, wurden zwischen 20°K und etwa 150°K gemessen. Im Falle Anionenzusätzen besteht der einfachste durch Überschußladungen erzeugte Dipol aus einem Silber‐Zwischengitterion zweiwertigen Fremdion. Aktivierungsenergie für Umorientierung dieses Dipols hängt stark speziellen Art des Zusatzes Grundgitters ab. Anomale Lagen Höhen Verlustfaktormaximums können dem Bindungstyp im verstanden...

A monoclinic 1-platinum defect recently detected was investigated more thoroughly by electron paramagnetic resonance (EPR). The is one of the dominating defects in platinum doped silicon. With a perfect reproducibility it observed samples prepared from n-type silicon as well p-type silicon, float zone (FZ) Czochralski (Cz) Its concentration varies with conditions preparation and nearly reaches that isolated substitutional Cz annealed for 2 h at 540 °C after quenching temperature diffusion....

Abstract The electronic structure of the paramagnetic centre described in Part I is discussed. This turns out to be a Se 3− – or Te pseudomolecule with 110‐direction. g ‐values and hyperfine constants but not can by assuming spin‐orbit‐coupling small compared crystal field splitting neglecting overlap atomic wave functions. ground state functions are calculated without restriction spin‐orbit‐coupling. method sufficient case question, because plays an important role.

Abstract Ausgehend von einem einfachen Näherungsansatz Bloembergen wird ein Zusammenhang zwischen der Linienbreite Kernresonanzabsorption und Versetzungsdichte hergestellt. Undotierte mit NaBr dotierte AgBr‐Kristalle werden bei Zimmertemperatur plastisch verformt. Die Erholung Temperaturen 90 °C 200 in Kernresonanzmessungen verfolgt. In AgBr‐Kristallen Zusatz treten Versetzungen auf, die durch Tempern nicht beseitigt können, aber sie hindern Deformationsschäden an Rückbildung.

Trigonal and orthorhombic Au (Pt) defects in Si additionally doped with Li P, previously investigated electron paramagnetic resonance (EPR), are shown to be aggregate involving substitutional interstitial Li. The small hyperfine interactions, not resolved EPR, could measured nuclear double (ENDOR). With ENDOR it is established that the trigonal consist of ${\mathrm{Au}}_{\mathrm{Si}}$-${\mathrm{Li}}_{3}$ (${\mathrm{Pt}}_{\mathrm{Si}}$-${\mathrm{Li}}_{3}$) aggregates, while...

Abstract A new gold‐related defect in silicon is observed after IR irradiation. Though a thermal treatment including additional doping with lithium necessary for the production of this centre, obviously does not participate paramagnetic state. The state mainly localized at atom and gold atom, both forming trigonal pair. interaction six groups three equivalent ligands partly resolved. g ‐values are compared those other defects silicon. Models discussed.

Abstract Im Rahmen des EU‐Projekts STORHY ist der Prototyp eines Metallhydridspeichers auf Natriumalanatbasis für automobile Anwendungen entwickelt worden. Besonderes Merkmal die Größe im Vergleich zu bisher vorhandenen Laborreaktoren. Mit Hilfe einer modell‐gestützten Simulation wird sein Beladungsverhalten verschiedene Betriebsbedingungen berechnet. Anhand Ergebnisse werden Wirksamkeit Kühlung und ihr Optimierungspotenzial diskutiert.