Scientific Bulletin. Physics.

Stały URI zbioruhttp://hdl.handle.net/11652/2752

W czasopiśmie Scientific Bulletin. Physics publikowane są artykuły pracowników i studentów Instytutu Fizyki PŁ, pracowników Centrum Nauczania Matematyki i Fizyki PŁ oraz pracowników innych uczelni, dotyczące najnowszych badań we wszystkich dziedzinach fizyki. Ukazuje się jeden zeszyt rocznie. Czasopismo wydawane jest w języku angielskim. Wszystkie prace są recenzowane. Czasopismo jest indeksowane w bazie BazTech.



The Scientific Bulletin. Physics journal publishes articles of employees and students of the Institute of Physics, Technical University of Lodz, employees of the Center for Teaching Mathematics and Physics, and employees of other universities, regarding the latest research in all areas of physics. One issue is published every year. The journal is published in English. All works are reviewed. The journal is indexed in the BazTech database.



Strona wydawcy : https://wydawnictwo.p.lodz.pl

Strona czasopisma : https://eczasopisma.p.lodz.pl/PHYSICS

DOI : 10.34658/physics



Przeglądaj

Filtry

2017 - 201919

Ustawienia

Data rozpoczęcia: 2017Data zakończenia: 2019

Wyniki wyszukiwania

Teraz wyświetlane 1 - 10 z 19
  • Pozycja
    Charge carrier mobility in non-equilibrated transport in molecular materials
    (Lodz University of Technology Press, 2019) Kania, Sylwester; Kościelniak-Mucha, Barbara; Kuliński, Janusz; Słoma, Piotr; Wojciechowski, Krzysztof
    Non-equilibrated transport of charge carriers in the molecular material depends on the structure and packing of the molecules. Explanation of the measurements of the photocurrent generated with use of UV flash light in organic layer needs to define the quantity of charge carriers mobility. Definition of this quantity in the scope of some defined transport model requires the detailed analysis of generation, recombination and charge transfer between neighbouring molecules. The problem is discuss on the basis of transport properties of two anthracene derivatives
  • Pozycja
    Polarization of organic aromatic molecule in anionic and cationic state
    (Lodz University of Technology Press, 2019) Kania, Sylwester; Kościelniak-Mucha, Barbara; Kuliński, Janusz; Słoma, Piotr; Wojciechowski, Krzysztof
    The modification of electron states and the change in the geometry of the structure of molecule during hopping transport of charge carriers depends on the symmetry of the molecule. During electric transport the molecule reversibly transforms from neutral state to cation when hole conductivity occurs or to anion when electron conductivity occurs. The energies of orbitals HOMO and HOMO1 of anthrone and anthrachinone are always negative, what allows for holes transport. Positive energies of LUMO and LUMO+1 orbitals of anion of anthrone and anthraquinone in structure of anion or neutral molecule make electron transport difficult.
  • Pozycja
    Electrical and thermal properties of anthraquinone layers
    (Lodz University of Technology Press, 2019) Kania, Sylwester; Kuliński, Janusz; Sikorski, Dominik
    Quantum-chemical calculations indicate that the bond lengths in the anthraquinone anthracene backbone are shorter than the corresponding bonds in unsubstituted anthracene. The shape of the frontier molecular orbitals (FMO) indicates the possibility of more efficient electron capture by the anthraquinone molecule than by the anthracene molecule while maintaining stability in the conditions prevailing in electrochemical cells. Differential scanning calorimetry (DSC) studies indicate the temperature stability of anthraquinone above the melting point up to 300C. The glass transition is determined at about 100°C.
  • Pozycja
    Influence of chirality on two-dimensional deformations of twisted flexoelectric nematic layers
    (Lodz University of Technology Press, 2019) Buczkowska, Mariola
    Two-dimensional deformations induced by electric field in twisted nematic cells filled with liquid crystal possessing flexoelectric properties were simulated numerically. The influence of chiral dopants on the occurrence and structure of the spatially periodic patterns was investigated. It was found that the chirality influences mainly the direction of the periodic patterns whereas the threshold voltage for deformation and the width of the stripes are weakly affected.
  • Pozycja
    Scientific Bulletin. Physics No. 1227, vol. 40 (2019)
    (Lodz University of Technology Press, 2019) Lodz University of Technology; Politechnika Łódzka
  • Pozycja
    Scientific Bulletin. Physics No. 1219, vol. 38 (2017)
    (Lodz University of Technology Press, 2017) Lodz University of Technology; Politechnika Łódzka
  • Pozycja
    Scientific Bulletin. Physics No. 1224, vol. 39 (2018)
    (Lodz University of Technology Press, 2018) Lodz University of Technology; Politechnika Łódzka
  • Pozycja
    Frequency dependence of the Kerr constant in nynas nytro 3000 oil determined by the polarimetric method
    (Wydawnictwo Politechniki Łódzkiej, 2018) Poborska, Julita; Dąbrówka, Dominika; Chwirot, Maksymilian; Ledzion, Rafał; Izdebski, Marek; Kucharczyk, Włodzimierz
    Frequency dependence of the Kerr constant in nynas nytro 3000 oil determined by the polarimetric method A frequency dependence of the Kerr constant K in transformer oil Nynas Nytro 3000 within a frequency range 117-5017 Hz is determined. An averaged value (2.30 ± 0.03)·10ˉ¹⁵ m/V² for K is obtained. The constant is found to be weakly frequency dependent and approaches its maximum 2.37·10ˉ¹⁵ m/V² at about 3000 Hz. The Kerr constant is of comparable value to that observed in other mineral oils employed previously in measurements of the quadratic electro-optic effect and the electrostriction in crystals.
  • Pozycja
    The origin of the interaction responsible for the difference of hole mobility of thwo derivatives of anthracene
    (Wydawnictwo Politechniki Łódzkiej, 2018) Kania, Sylwester; Kuliński, Janusz; Sikorski, Dominik
    Hole mobility of the layers built from two anthracene derivatives differing in the substitution of the central benzene ring, i.e. anthrone substituted with only one keto group and anthraquinone substituted with two keto groups differs by one order of magnitude despite the fact that both have almost identical crystal structure. We ascribe this difference to existence of an additional intermolecular interaction arising in the layer of anthrone.
  • Pozycja
    Ab initio investigation of ethanol-tetracene interactions during adsorption
    (Wydawnictwo Politechniki Łódzkiej, 2018) Kania, Sylwester; Kościelniak-Mucha, Barbara; Słoma, Piotr; Wojciechowski, Krzysztof
    Ab initio calculations presented in this work are performed to investigate the geometry, interaction energy and bonding properties of binary complexes formed between neutral ethanol and tetracene molecules. Two different geometries were applied for the study. The interaction energies between molecules in the complex posses minimum at the distance of about 3.6 A among oxygen atom in ethanol and the neighbouring carbon atom of tetracene skeleton.