Structure and Dynamics of Confined Polymers (NATO SCIENCE PARTNERSHIP SUB-SERIES: 3: Volume 87): Pro

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Semiconductor Science and Technology , vol. The project aims at investigations of recombination pathways of free carriers in III-nitride structures oriented along the non-polar and semi-polar axis. In this project, the technology of a perovskite laser emitting in the visible range will be developed. Unique investigation techniques and sophisticated deposition technologies will be applied to optimize the carrier transport and optical parameters of the perovskite layers, seeking to achieve very low threshold of amplified spontaneous emission and lasing.

Two regimes of carrier diffusion in vapor-deposited lead-halide perovskites. Journal of Physical Chemistry C , vol. Scintillators for Future Calorimeters No. Project is devoted to research into new inorganic scintillation materials for novel ionizing radiation detectors for high-energy physics, medical imaging and industrial applications. Subpicosecond luminescence rise time in magnesium codoped GAGG: Accelerators, Spectrometers, Detectors and Associated Equipment , vol.

Significant improvement of GAGG: Ce based scintillation detector performance with temperature decrease. Journal of Luminescence, vol. The project is aimed at optimization of growth conditions for InN and low-Ga-content InGaN epitaxial layers and heterostructures to meet the requirements for utilization in infrared detectors and to ensure the radiation hardness, which is sufficient for exploitation in space applications. Advanced European Infrastructures for Detectors at Accelerators. During the first months of implementation of the project kick-off meeting was visited.

Project website was discussed with partners and preparations started. Among partners suitable experimental set-ups need for project implementation were discussed and selected. Band edge photoluminescence of undoped and doped TlInS 2 layered crystals. Joint Lithuania-Japan research project: In the final stage of the project a new series of bifluorene derivatives possessing rigid molecular bridges were synthesized and thoroughly characterized.

Sophisticated femtosecond pump-probe spectroscopy analysis revealed small amount of traps of unknown nature present in the crystal, which were found to be responsible for efficient energy trapping and thereby resulting in the low-threshold light amplification. The research carried out in the framework of current project practically solved the issues related to optical gain media, however, efficient carrier injection still remained a problem, which is expected to be circumvented by utilizing doping technique.

Diverse regimes of mode intensity correlation in nanofiber random lasers through nanoparticle doping. ACS Photonics , doi: Nanoparticle-doped electrospun fiber random lasers with spatially extended light modes. KG Germany Camida Ltd. Belgium Chukan Butsu Ltd. Piskarskas emeritus , Habil. Head of the Teaching Laboratory: A high peak and average power optical parametric chirped pulse amplification system driven by diode-pumped Yb: YAG lasers running at 1 kHz repetition rate has been developed.

Excellent stability of output parameters over 16 hours of continuous operation was demonstrated. A new technique for photonic crystal fiber dispersion measurement was prposed. It was demonstrated that investigating supercontinuum using cross-correlation frequency resolved optical gating XFROG technique can be used for quantitatively characterizing dispersion and observing orthogonal polarization modes in polarization maintaining photonic crystal fibers. In addition, an XFROG trace of supercontinuum generated in a polarization maintaining photonic crystal fiber reveals complex behavior of orthogonal polarization modes that is different in normal and anomalous dispersion regions of the photonic crystal fiber.

Compared to continua produced by filamentation in continuous solid media, the spectral energy density of the multi-plate continuum is higher by two to three orders of magnitude. The continuum pulses exhibit strongly self-compressed features, which could be separated from the rest of the pulse by spectral filtering, allowing direct production of few-cycle pulses. A method to form radially and azimuthally polarized beams as well as higher order polarization singularities by superposition of optical vortices with opposite topological charges obtained by optical parametric amplification was shown.

The proposed method could find applications in optical trapping of particles, nonlinear optics experiments, and laser material processing. Spectral and spatial properties of infrared femtosecond laser pulses with a wavelength between 1. It was shown that under tight focusing conditions laser pulses experience asymmetric spectral broadening and a strong blue-shift with respect to the incident laser wavelength. The observed blue-shifted radiation is emitted conically, in contrast to the weaker red-shifted on-axis emission. The spectral broadening and frequency shifts were interpreted in terms of ionization-induced effects.

Estimation of photonic crystal fiber dispersion by means of supercontinuum generation. Generation of radially polarized beams and higher order polarization singularities by optical parametric amplification of optical vortices. Variation of thermally-coupled spectral bands fluorescence intensity ratio by dispersed nanocrystals was observed in pulse energy range varying from below modification threshold to the optical breakdown.

Physicochemical properties of golden nanoparticles and synthetized up-converting nanoparticles were studied revealing the sensor properties in the former, and the diagnostic potential of multimodal agents in model biological environments in the latter. The effects of quantum dots on the activity of mesenchymal stem cells were evaluated, and the study of its potential embryotoxicity was performed in cooperation with Nacional Cancer Institute.

Fast-response and low-loss surface acoustic wave humidity sensor based on bovine serum albumin-gold nanoclusters film. Sensors and Actuators B , vol. Photoluminescent gold nanoclusters in cancer cells: International Journal of Molecular Sciences , vol. Skin-derived mesenchymal stem cells as quantum dot vehicles to tumors. International Journal of Nanomedicine , vol. Scaffolds with different pore shapes hexagons and rectangles were fabricated using direct laser writing DLW in pre-polymers technique. After seeding them with chondrocytes the influence of pore shape to cell proliferation and production of extracellular matrix was determined.

Rectangular pore shape was chosen to further investigate the importance of pore size scaled by factors 1. Also, mechanical properties of the DLW fabricated scaffolds are being investigated and compared with collagen membranes. Microactuation and sensing using reversible deformations of laser-written polymeric structures. Programme towards Future Technologies project: Malinauskas — Project Research groups projects: The aim of the project is to develop the hybrid femtosecond laser micromachining methods by combining two different manufacturing technologies thus expanding their technological potential.

Up to now the subtractive and additive methods have been mostly cultivated separately. In the context of our project additive manufacturing includes optical printing of cross-linkable materials with sub-micrometer spatial resolution and arbitrary 3D architectures, which in turn are already successfully applied in photonic and microengineering applications. On the other hand, subtractive manufacturing covers precision free-form cutting, drilling, surface patterning and bulk modification of transparent materials glasses which are also widely used in the field of microtechnologies.

The aim of the project is to demonstrate efficient control of filamentation dynamics and related phenomena, such as pulse compression and supercontinuum generation in birefringent media by means of competing quadratic and cubic nonlinearities. The project actions include comprehensive theoretical, numerical and experimental studies of filamentation and supercontinuum generation dynamics in basic nonlinear crystals using broadly tunable ultrashort laser pulses and so accessing the regimes of normal and anomalous group velocity dispersion.

Second-order cascading-assisted filamentation and controllable supercontinuum generation in birefringent crystals.

Optics Express , vol. Microchip lasers are preferable to their counterparts due to their compactness and energy efficiency, but they have one fundamental drawback - low beam quality, which greatly limits their laser radiation maximum brightness and limits the field of applications. Most approaches to increase beam quality proposed so far either significantly limit the maximum achievable output power, or at least greatly increase the dimensions of the system.

The aim of the project is to create a compact photonic crystal microstructure capable to block the generation of higher order modes and thus significantly increase the quality of the microchip laser radiation. Within Transnational Access program, three research projects together with researchers from UK, France and Germany were performed. The tunable properties of PGS-M coupled with its enhanced processing capabilities make the polymer an attractive potential biomaterial for various future applications.

Design and characterization of laser 3D lithography made orbital angular momentum OAM microstructures. Both optical and acoustic scale free-movable spinners walkers-on-water were modelled, fabricated and measured. Visit project of Dr. VU part project leader Dr. Malinauskas, Project info [ https: We first show that light can be gradually slowed down in the defect waveguide WG , which is obtained by gradually changing the period of the surrounding woodpile photonic crystal WPC along the propagation direction.

In result, the waveguide mode gradually approaches the band edge region, while this phenomenon has three consequences. First, the Fourier components of propagating wave will be spatially separated as each frequency will reach its zero velocity at different positions. Second, as the wave slows down, it will penetrate deeper into the surrounding cladding, thus increasing the coupling efficiency between the WG and a nearby placed resonator.

Third, the high density of states near the band edge result in highly efficient light scattering of a nearby placed resonator, which in turn increases the quality factor of the interaction. Following this idea, the acceptor type cavities, which are tuned to the localized frequencies, are side-coupled to the WG at respective wave localization areas. Furthermore, drop channels have been introduced to read-out the trapped spectra, showing that the targeted frequencies can be detected selectively.

Compared to previous studies, our approach has the advantages of low radiation losses, the absence of any reflection feedback and both enhanced quality factor and transmission of the captured light. In this work we explore a possibility to apply ultrafast 3D laser nanolithography in conjunction with pyrolysis to acquire glass-ceramic 3D structures in micro- and nano-scale.

Then, post-fabrication heating at o C in Ar atmosphere decomposes organic part of the material leaving the glass-ceramic component of the hybrid. This brings us one step closer to fabricating highly efficient slow-light absorbers. Characterization of diffractive optical elements and microstructures in transparent materials using profilometer and SEM, Customer — Femtika, Research of 2nd and 3rd harmonics characteristics of Femtokit modules, Customer — Optolita, Laser fabrication of 2.

Research of samples using profilometry and topography, Customer — Vilnius Gediminas Technical University, Broadband dielectric spectroscopy of ferroelectrics and related materials, relaxation and phonon dynamic studies in order-disorder ferroelectrics, ferroelectric ceramics, dipolar glasses, relaxors, composite systems, liquids, metal-organic structures etc.

Dielectric and ultrasonic studies of various ferroelectrics, relaxor ferroelectrics, multiferroics, nanosized materials and inorganic and organic composites have been carried out. The aim of the project is to find technological conditions for oxygen-ion conducting thin film growth by pulsed laser deposition and preparation of thick solid electrolyte films. Electrical properties of scandia- and ceria-stabilized zirconia ceramics. Solid State Ionics , vol. NMR Investigations in Li 1. The Journal of Physical Chemistry C , vol.

Anomalous temperature-dependent electrical properties of Na 2 MnP 2 O 7. Synthesis, structure and impedance spectroscopy of NaCsZn 0. Complexity of wireless network research problems requires close comparison of experimental measurements with numerical simulations. The core of this environment consists of cloud-based virtual server environment, allowing interactively share results between team members and run massive simulations, for example, antena analysis, radio propagation channel, radio interference estimation problems.

Telecommunications Research centre started analysis project for the Communications Regulatory Authority of Lithuania on the compatibility between upcoming WiFi networks and existing satellite services, point-to-point wireless networks and ultra-wide band systems in 6 GHz frequency band. Energy autonomous UWB localization. High-accuracy localization of backscattering UWB tags: Comprehensive investigation of materials and devices employed in telecommunication systems have been carried out: Devices under investigation were: GaN, Si and graphene based diodes and transistors operating as detectors of terahertz radiation, GaSb based semiconductor lasers for mid-infrared radiation, materials with carbon nanoparticles.

Charge carrier transport mechanisms, influence of growth quality and device design to the operation characteristics of investigated devices were evaluated. Resistivity and low-frequency noise characteristics of epoxy-carbon composites. Journal of Applied Physics , vol. Low-frequency noise characteristics of lamellar ferrielectric crystal CuInP 2 S 6 at the phase transition. Journal of Infrared Millimeter and Terahertz Waves , vol. In last two decades the field of Terahertz THz physics and technology experiences tremendous growth, as it found the potential applications in such fields as space research, security, drugs control, medical and biological imaging, quality control in industry to name just a few.

However, compact and effective THz detectors as well as THz optic components still remain an important issue. Commercial THz detectors available in THz market are based on quite slow optoacoustic, pyro-electric, and bolometric effects. Highest drawback of such devices relates to their long response time, sensitivity to mechanic and acoustic disturbances, bulky dimensions and high price.

The main aim of the project is to develop compact THz components and spectroscopic THz imaging systems. Antenna-coupled field effect transistors and asymmetric geometry diodes will be employed as sensors up to 4 THz. TeraFET detector for measuring power fluctuations of 4. The main objective of the project is development of new lead-free multiferroic materials through preparation, investigation, and optimization of Bi-containing oxygen-octahedral systems with paramagnetic ions involved: They are quite heavily doped and show metallic-type behavior.

Pellets of LDHs were investigated under vacuum conditions 25— K. Dielectric spectroscopy showed an anomaly in 75— K range, which is somewhat influenced by magnetic field. Bilateral Lithuanian-Japanese partnership projects: One of the main objectives in was to make the majority of characterisation and analysis. This was achieved along with dissemination of the results.

The obtained results were presented in various conferences in Europe, USA and Japan; one paper was published and one accepted for publication. Thus, the achievements are more than was planned. Ultrabroadband Dielectric Spectroscopy of Relaxor Ferroelectrics.

The main focus of the project in was the investigation of nonlinearities in PMNPT single crystals. The response of the single crystal was measured at high fields and ferroelectric and electromechanical hystersis loops were investigated. These investigations revealed that polar nanoregions start percolating at certain temperatures forming the stable ferroelectric domains.

The whole dipolar dynamics in the system is of order-disorder type. Journal of Applied Physics, , Temperature evolution of central peaks and effect of electric field in relaxor ferroelectric 0. Japanese Journal of Applied Physics, 56, 10S. Design, Dielectric Property and Organic Catalysis. The aim of this project is the synthesis of MOF structures via de novo procedure with different catalysts incorporated and the investigation of their dielectric and other functional properties. The peculiarities of the electrical response to various gasses was determined which further can lead to the development of novel gas sensing devices.

Electrical studies have shown that the frequency dependence of electrical properties is caused by Maxwell-Wagner relaxation and the temperature dependence of electrical conductivity exhibit non-Arhenius behaviour. Lithuanian Journal of Physics , p. Polymer Composites ; https: Bilateral Lithuanian-French Gilbert project: The main results of the project are determined electromagnetic properties of hollow carbon spheres and mesoporous carbon with various sizes of pores.

All these materials are suitable for electromagnetic shielding. Electromagnetic properties of model vitreous carbon foam. Bilateral Lithuanian-French Partnership project: The aim of the investigation is to understand mechanisms of ionic transport in these materials and to improve their electrical properties.

Anisimovas part-time , Dr. Karazija affiliated , Habil. Narbutis part-time , Dr. Macijauskas part-time , K. Bagdonas part-time , L. Klebonas part-time , G.

We studied the chemical evolution of the thick and thin discs of the Galaxy and concluded that the thick disc has formed on a time-scale of accretion of 0. A gap in star formation between the thick and thin disc formation of several hundreds of Myr should be present. Using the Moletai Astronomical Observatory telescopes, we studied the exoplanet hosting star HAT-P and found two new exoplanets of hot-jupiter type rotating around it.

Monthly Notices of the Royal Astronomical Society , vol. The thick thin disk and thin thick disk of the Milky Way. Monthly Notices of the Royal Astronomical Society: Spectral and luminosity classes, interstellar reddenings and distances were determined. Dust distribution in the area was compared to the distribution of molecules CO taken from the Dame et al. The Gaia Data Release 1 prallaxes were applied for determination of distances.

In the area of young open cluster NGC the catalogue of young stellar objects, containing about objects, was analysed to determine the cluster membership, interstellar reddenings, extinctions and ages. It was shown that the formation OH UV lines are prone to large 3D effects; besides, chromospheric layers play an important role in the formation of these lines.

Stochastic Effects in Stellar Systems. Spatially resolved star formation history of Leo A galaxy was derived. Evolutionary parameters of star clusters in the Andromeda galaxy were determined based on Hubble Space Telescope photometric observations. Variability periods of 7 PPNe stars days were derived based on radial velocity measurements and it was demonstrated that all monitored PPNe do not have secondary components more massive than 0.

We determined the properties of turbulent gas and its fragmentation in galaxy bulges subjected to AGN feedback, discovered that AGN seem to have a critical luminosity, which gives the strongest enhancement of star formation in the host galaxy. Deriving physical parameters of unresolved star clusters. M 31 PHAT star clusters.

Astronomy and Astrophysics , , A Where are the binaries? Results of a long-term search for radial velocity binaries in proto-planetary nebulae.

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Astrophysical Journal , vol. Do AGN outflows quench or enhance star formation? Twenty-seven new asteroids have been discovered. A new precise orbit of the Distant object VU85 was determined. We published astrometric positions of asteroids. Discovery, orbit and orbital evolution of the Distant object VU The energies and electron-impact excitation cross sections of Sr ion from 4p subshell are calculated in the Dirac-Fock-Slater approximation. The classification of calculated energy levels is performed. The intensity spectrum of the Auger lines of Sr ion emitted following 4p-electron impact excitation of Sr atom via simultaneous ionization and excitation as well as excitation-autoionization processes is evaluated and used for the identification of experimental spectrum.

Relativistic spin-photon or else AME interaction term is written in irreducible tensor form, provided that the radiation source is described by electronic transitions. As a result, it is shown that the atomic energy corrections increase for shortwavelengths such as eg. The most probable fragmentation pathways of the glutamate were determined. The structure and composition of the fragments were established.

The energy structure and decay channels of the 4p 6 -shell excited states in Sr. Irreducible tensor form for the spin-photon coupling. Physics Letters A , vol. Investigation of Ordered and Unordered Atomic Systems. The study reveals negligible contribution of the direct TI by electron-impact to the process. Contributions from direct ionization, excitation-autoionization, and resonant-excitation double-autoionization processes are taken into account. The crystalline structure of SrRuO3: Application of hybrid scheme to the density functionals revised for solids.

Atomic data revisions for transitions relevant to bservations of interstellar, circumgalactic, and intergalactic matter. The Astrophysical Journal Supplement Series , vol. Atomic Data and Nuclear Data Tables , vol. The data are useful for identification and deblending of new emission lines from the Sun and other astrophysical sources. Extended calculations of spectroscopic data: Astrophysical Journal Supplement Series , vol. Multiconfiguration calculations of electronic isotope-shift factors in Zn I.

Nucleon transfer reactions in deuteron-deuteron collisions above breakup threshold were studied solving exact integral equations for four-body transition operators; differential cross sections, analyzing powers, and spin transfer coefficients calculated using realistic NN force models were found to be in good agreement with experimental data. Universal properties of the four-fermion system near the unitary limit have been determined, in particular, the parameters of the effective range expansion for the fermionic dimer-dimer scattering.

Magnetic moments and magnetic dipole transition widths of all ground-state heavy hadrons were studied within a framework of the modified bag model. For the baryons containing three differently flavoured quarks, the effect of hyperfine mixing was taken into account. In order to minimize uncertainties in the calculation of the decay widths the additional care was taken to improve theoretical predictions for the energy of emitted photon when available, the experimental data were used.

Universality in fermionic dimer-dimer scattering. Calculation of quantum Eigens with geometrical algebra rotors, advances. Applied Clifford Algebras , vol. Propagation of a probe pulse was considered in an atomic medium characterized by a combined tripod and Lambda atom-light coupling scheme. It is demonstrated that dark states can be formed for such an atom-light coupling leading to the electromagnetic transparency and slow light. It is shown that generation of stable slow light optical solitons is possible in such a combined tripod and Lambda atomic system.

An optical bistability was demonstrated for a four-level atomic system involving a Rydberg state illuminated by a probe and control laser fields. A way of creating the spin-orbit coupling in atomic-molecular Bose-Einstein condensates was demonstrated by combining the spin-dependent photoassociation and Raman coupling, which can lead to formation of topological excitations.

B , 50, Optical bistability forming due to a Rydberg state. Am B , 34, Spin-orbit coupling manipulating composite topological spin textures in atomic-molecular Bose-Einstein condensates. A , 95, Evolution and Statistics of Complex Systems. We have studied burst and inter-burst duration statistics as empirical test of a long-range memory in the financial markets. The concept of spurious memory in the non-equilibrium stochastic models of imitative behavior, based on the non-linear stochastic differential equations, is developed. We have shown that Forex data with high probability exhibits spurious memory as empirical burst and inter-burst duration statistics can be reproduced by proposed model with Markov property.

We have studied statistics of the Lithuanian parliamentary elections and shown that these statistics could arise from a simple herding model, which is also used in our works related to a long-range memory in the financial markets. We have shown that both Forex and our model of financial markets both exhibit spurious long-range memory. Burst and inter-burst duration statistics as empirical test of long-range memory in the financial markets. Physica A , Empirical analysis and agent-based modeling of Lithuanian parliamentary elections.

Complexity , Spurious memory in non-equilibrium stochastic models of imitative behaviour. Entropy 19 , To accurately access the properties of the planets, scientists have to know as much as possible about the star the planet is orbiting. High-resolution spectral observations have been carried out for stars and photometric variability light curves obtained for stars. Iron-peak elements in the solar neighbourhood.

Towards Realistic Stellar Model Atmospheres: We constructed a first 3D hydrodynamical model of a red giant star with the chromosphere.

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We have shown that shock waves propagating in the chromosphere alter the intensity and shape of the chromospheric spectral line profiles, and lead to a significantly higher flux in the UV. These properties can not be recovered using classical 1D hydrostatic model atmospheres. We have also discovered that stars belonging to different stellar generations in the globular cluster 47 Tuc have very similar potassium abundance. We found no statistically significant relations between the abundances of potassium and other light elements, such as sodium and magnesium. First chromosphere model of a late-type giant.

We traced the radial distributions of abundances of chemical elements produced through different nucleosynthetic channels — the alpha-elements O, Mg, Si, Ca and Ti, and the iron-peak elements Fe, Cr, Ni and Sc — by use of the Gaia-ESO IDR4 results for open clusters and young-field stars. The experimental cross section data at Core-excitation effects in 20 O d,p 21 O transfer reactions: Neutron- 19 C scattering: Towards including realistic interactions.

New PDF release: Biochemistry of Collagens, Laminins and Elastin: Structure,

Novel Optical Lattices No. Superfluidity properties have been investigated for degenerate gas of Fermi of atoms in a laser-assisted bilayer system providing the two-dimensional spin-orbit coupling SOC. As the atom-light coupling increases, the system can transit from the FFLO state to a topological superfluid state. These findings are confirmed by the Bogoliubov-de Gennes simulations with a weak harmonic trap added. Fulde-Ferrell-Larkin-Ovchinnikov state to topological superfluidity transition in bilayer spin-orbit-coupled degenerate Fermi gases.

During , the project continued its activities, focusing on Floquet engineering of artificial gauge fields, stabilization and detection of fractional quantum Hall states, and motion of wave packets in the presence of position-space, momentum-space and phase-space Berry curvature. In particular, it was demonstrated that in square lattices as small as 9x5 sites fractionally charged topological excitations could be induced using two complementary techniques: Floquet analysis of a quantum system with modulated periodic driving.

Read e-book online Advances in Chemical Physics, Volume PDF - Przedszkole Madry Book Archive

Phase-space curvature in spin-orbit-coupled ultracold atomic systems. The goal of this project is the investigation of a group of interstellar clouds and star forming regions SFRs located in the direction of the Great Cygnus Rift, between the Galactic longitudes 70—90 deg. Using the seven-colour Vilnius photometric system as well as astrometric data from the Gaia orbiting observatory we determine the distances and interstellar extinction to several young clusters located in this region. The preliminary results of the investigation of the open cluster IC will be presented at the st meeting of the American Astronomical Society in January The idea to apply tools from physics to social systems is not novel, but until s, there were mostly social scientists who took inspiration from physics and not the other way round.

The first studies conducted by physicists revealed that social systems exhibit statistical patterns reminiscent of physical systems in critical state. While working on the new models we will take compatibility with theories from social sciences as well as empirical data into account. Taiwan-Latvia-Lithuania joint research project: Morowitz , Shelley D.

Copley , James R. Only 12 left in stock more on the way. Deamer , Jack W Szostak. Only 1 left in stock more on the way. The Central Concepts Jan 01, Deamer , Gail R. Only 1 left in stock - order soon. Deamer , Arnost Kleinzeller , Douglas M. Liquid Interfaces in Chemistry and Biology Dec 22, Volkov , David W.

Deamer , Darrell L. Tanelian , Vladislav S. Structure and Dynamics of Confined Polymers: Kellermayer , David W. Its measurement, regulation, and utilization in cellular functions: July , Kroc Foundation series. Provide feedback about this page. There's a problem loading this menu right now. Get fast, free shipping with Amazon Prime. Get to Know Us. English Choose a language for shopping. Amazon Music Stream millions of songs. Amazon Drive Cloud storage from Amazon. Alexa Actionable Analytics for the Web. AmazonGlobal Ship Orders Internationally.

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