395 research outputs found
The Worlds of travelling by Andrii Bludov
No full textСтаттю присвячено аналізу серії полотен "Сицзан" відомого сучасного художника Андрія Блудова. Зустрівшись із культурою Сходу (Тибет), митець по-новому інтерпретує пластичні прийоми, які
властиві його стилістиці. Проте чари медитації повною мірою не захопили свідомості Блудова, він
наполягає на необхідності динамічного життя. Автора не можна назвати митцем однієї інтелектуальної та пластичної теми, оскільки у його доробку – експерименти різних видів і технік мистецтва.
Художник визначає власну творчість як «прикордонну», що існує на межі абстракції та внутрішнього реалізму. У творах Блудова існують архетипові образи-знаки, що мандрують з одного полотна
на інше. Андрій Блудов маніфестує ідеї благочестя та мудрості в час, коли соціальний активізм захопив свідомість більшості українських художників. Повна художня та інтелектуальна інформація
полотен Блудова відкривається, якщо глядач готовий сприйняти її на чуттєвому та розумовому рівнях.This article analyzes the series of paintings “Sytszan” by famous contemporary artist Andrii Bludov.
Faced with the culture of the East (Tibet), he interprets this theme in new plastic techniques within his style.
But the spell of meditation did not fully capture Bludov’s consciousness; he insisted on the necessity of
a dynamic life. The author cannot be called an artist of a particular style. Different plastic and intellectual
themes occur in his works of different types. He experiments in techniques of art.
In the compositions of the author, a devoted meditation is shown as the basic idea of religious life in Tibet.
Bludov riches a difficult task to depict spatial emptiness not as nature but as a spiritual and psychological
phenomenon. In the series “Sytszan”, metaphor reaches the limit of expressiveness and credibility. The metaphor
arises as a need of the artist in a short period of time (time constraints film, performances, and art).
In the same compositions. the painter depicts the world of human relations and cultural situations, a large
reservoir of life. Then he turns to the images-metaphors for installation. Metaphor is a working tool in the
works of Andrii Bludov. It meets the needs of modern outlook on the parallel introduction of countervailing
information into a single structural artwork unit.
The artist defines his own work as «border» on the verge of abstraction and internal realism in the sense
of mystical realism. In the works of Bludov, archetypes are images of characters that travel from one canvas
to another. The full artistic and intellectual information of Andrii Bludov’s paintings will open if the viewer
is ready to accept them on the sensory and mental levels
Optimisation du FFS pour le CLIC à 380 GeV et applications pour l'ultra-low β* à l'ATF2
No full textThe e⁺e⁻ collider is considered as one of the most suitable accelerator to precisely measure the Standar Model parameters at Higgs energies. Currently, there are two kinds of e⁺e⁻ colliders proposed: the circular and the linear colliders. The e⁺e⁻ circular colliders projects under study are: the Future Circular Collider (FCCee) and the Circular electron-positron Collider (CEPC). Alternatively, the two e⁺e⁻ linear colliders projects are: the International Linear Collider (ILC) and the Compact Linear Collider (CLIC). This PhD is focused in the e⁺e⁻ linear colliders. Both e⁺e⁻ linear colliders projects are conceptually similar and composed of similar sub-systems. Starting from the particles source to the Interaction Point (IP) the main sub-systems are: the positron and the electron sources, the Damping Ring (DR), the Ring to Main Linac transport (RTML), the Main Linac (ML), and the Beam Delivery System (BDS). In particular the BDS is composed of: a diagnostic section, an energy and a betatron collimation sections, and a Final Focus System (FFS) where the beam is strongly focused down to several nanometers by means of a Final Doublet (FD) of quadrupoles. The design of the FFS of both ILC and CLIC is based on the local chromaticity correction scheme. It uses an interleaved pairs of sextupole magnets to simultaneously correct the horizontal and vertical chromaticities. The Accelerator Test Facility 2 (ATF2) at KEK (Japan) is an energy-scaled down implementation of a linear collider BDS like the ILC or CLIC ones, including a FFS system. During the last years the unique and outstanding ATF2 achievements have already verified the minimum technical feasibility of the FFS of linear colliders such as ILC or CLIC. This thesis focuses on the optimization of the CLIC FFS system for the first energy stage with a center-of-mass energy of 380 GeV. In the first part the study of shortening the FD to reduce chromaticity and an alternative optics design with a novel dispersion profile in the FFS is presented. In the second part the analytical and experimental tunability studies of a CLIC-like FFS optics for ATF2, called “ultra-low β* optics” is reported. These studies include: new alignment technique for the octupoles, new set of ultra-low β* tuning knobs to better control the aberrations and new alternative tuning strategy including the static errors performed during the ATF2 experimental campaigns in June 2019, December 2019, and March 2020.Le collisionneur e⁺e⁻ est considéré comme l'un des accélérateurs les plus appropriés pour mesurer avec précision les paramètres du modèle standard aux énergies de Higgs. Actuellement, existent deux types de collisionneurs e⁺e⁻ proposés : les collisionneurs circulaires et les collisionneurs linéaires. Les projets de collisionneurs circulaires e⁺e⁻ à l'étude sont : le futur collisionneur circulaire (FCCee) et le collisionneur circulaire électron-positon (CEPC). Alternativement, les deux projets de collisionneurs linéaires e⁺e⁻ sont : le collisionneur linéaire international (ILC) et le collisionneur linéaire compact (CLIC). Cette thèse porte sur les collisionneurs linéaires e⁺e⁻. Les deux projets de collisionneurs linéaires e⁺e⁻ sont conceptuellement similaires et composés de sous-systèmes similaires. En partant de la source de particules jusqu'au point d'interaction (IP), les principaux sous-systèmes sont : les sources de positons et d'électrons, l'anneau d'amortissement (DR), le transport de l'anneau vers le linac principal (RTML), le linac principal (ML), et le Beam Delivery System (BDS). En particulier, le BDS est composé : d'une section de diagnostic, d'une section de collimation de l'énergie et du bêtatron, et d'un Final Focus System (FFS) où le faisceau est fortement focalisé jusqu'à plusieurs nanomètres au moyen d'un Final Doublet (FD) de quadripôles. La conception du FFS de l'ILC et du CLIC est basée sur le schéma de correction de chromaticité locale. Il utilise des paires d'aimants sextupôlaires entrelacés pour corriger simultanément les chromaticités horizontales et verticales. L'Accelerator Test Facility 2 (ATF2) à KEK (Japon) est une mise en œuvre à une énergie plus bas d’un BDS comme ceux de l'ILC ou du CLIC, comprenant un système FFS. Au cours des dernières années, les réalisations uniques et exceptionnelles de l'ATF2 ont déjà vérifié la faisabilité technique minimale du FFS des collisionneurs linéaires tels que ILC ou CLIC. Cette thèse porte sur l'optimisation du système CLIC FFS pour le premier étage énergétique avec une énergie du centre de masse de 380 GeV. Dans la première partie, l'étude du raccourcissement de la FD pour réduire la chromaticité et une conception optique alternative avec un nouveau profil de dispersion dans la FFS est présentée. Dans la deuxième partie, les études analytique et expérimentale d'une optique FFS de type CLIC pour ATF2, appelée « optique ultra-low β* » sont rapportées. Ces études comprennent : une nouvelle technique d'alignement des octupôles, un nouvel ensemble de « knobs » de réglage à « ultra-low β* » pour mieux contrôler les aberrations et une nouvelle stratégie de réglage alternative comprenant les erreurs statiques effectuées lors des campagnes expérimentales ATF2 en juin 2019, décembre 2019 et mars 2020
Optimization of CLIC Final Focus System at 380 GeV and implementation studies for Ultra-low β* at ATF2
No full textThe e+e− collider is considered as one of the most suitable accelerator to precisely measure the Standard Model parameters at Higgs energies. Currently, there are two kinds of e+e− colliders proposed: the circular and the linear colliders. The e+e− circular colliders projects under study are: the Future Circular Collider (FCCee) and the Circular electron-positron Collider (CEPC). Alternatively, the two e+e− linear colliders projects are: the International Linear Collider (ILC) and the Compact Linear Collider (CLIC). This PhD is focused in the e+e− linear colliders. Both e+e− linear colliders projects are conceptually similar and composed of similar sub-systems. Starting from the particles source to the Interaction Point (IP) the main sub-systems are: the positron and the electron sources, the Damping Ring (DR), the Ring to Main Linac transport (RTML), the Main Linac (ML), and the Beam Delivery System (BDS). In particular the BDS is composed of: a diagnostic section, an energy and a betatron collimation sections, and a Final Focus System (FFS) where the beam is strongly focused down to several nanometers by means of a Final Doublet (FD) of quadrupoles. The design of the FFS of both ILC and CLIC is based on the local chromaticity correction scheme. It uses an interleaved pairs of sextupole magnets to simultaneously correct the horizontal and vertical chromaticities. The Accelerator Test Facility 2 (ATF2) at KEK (Japan) is an energy-scaled down implementation of a linear collider BDS like the ILC or CLIC ones, including a FFS system. During the last years the unique and outstanding ATF2 achievements have already verified the minimum technical feasibility of the FFS of linear colliders such as ILC or CLIC. This thesis focuses on the optimization of the CLIC FFS system for the first energy stage with a center-of-mass energy of 380 GeV. In the first part the study of shortening the FD to reduce chromaticity and an alternative optics design with a novel dispersion profile in the FFS is presented. In the second part the analytical and experimental tunability studies of a CLIC-like FFS optics for ATF2, called “ultra-low β∗ optics” is reported. These studies include: new alignment technique for the octupoles, new set of ultra-low β∗ tuning knobs to better control the aberrations and new alternative tuning strategy including the static errors performed during the ATF2 experimental campaigns in June 2019, December 2019, and March 2020
Optimisation du FFS pour le CLIC à 380 GeV et applications pour l'ultra-low β* à l'ATF2
No full textThe e⁺e⁻ collider is considered as one of the most suitable accelerator to precisely measure the Standar Model parameters at Higgs energies. Currently, there are two kinds of e⁺e⁻ colliders proposed: the circular and the linear colliders. The e⁺e⁻ circular colliders projects under study are: the Future Circular Collider (FCCee) and the Circular electron-positron Collider (CEPC). Alternatively, the two e⁺e⁻ linear colliders projects are: the International Linear Collider (ILC) and the Compact Linear Collider (CLIC). This PhD is focused in the e⁺e⁻ linear colliders. Both e⁺e⁻ linear colliders projects are conceptually similar and composed of similar sub-systems. Starting from the particles source to the Interaction Point (IP) the main sub-systems are: the positron and the electron sources, the Damping Ring (DR), the Ring to Main Linac transport (RTML), the Main Linac (ML), and the Beam Delivery System (BDS). In particular the BDS is composed of: a diagnostic section, an energy and a betatron collimation sections, and a Final Focus System (FFS) where the beam is strongly focused down to several nanometers by means of a Final Doublet (FD) of quadrupoles. The design of the FFS of both ILC and CLIC is based on the local chromaticity correction scheme. It uses an interleaved pairs of sextupole magnets to simultaneously correct the horizontal and vertical chromaticities. The Accelerator Test Facility 2 (ATF2) at KEK (Japan) is an energy-scaled down implementation of a linear collider BDS like the ILC or CLIC ones, including a FFS system. During the last years the unique and outstanding ATF2 achievements have already verified the minimum technical feasibility of the FFS of linear colliders such as ILC or CLIC. This thesis focuses on the optimization of the CLIC FFS system for the first energy stage with a center-of-mass energy of 380 GeV. In the first part the study of shortening the FD to reduce chromaticity and an alternative optics design with a novel dispersion profile in the FFS is presented. In the second part the analytical and experimental tunability studies of a CLIC-like FFS optics for ATF2, called “ultra-low β* optics” is reported. These studies include: new alignment technique for the octupoles, new set of ultra-low β* tuning knobs to better control the aberrations and new alternative tuning strategy including the static errors performed during the ATF2 experimental campaigns in June 2019, December 2019, and March 2020.Le collisionneur e⁺e⁻ est considéré comme l'un des accélérateurs les plus appropriés pour mesurer avec précision les paramètres du modèle standard aux énergies de Higgs. Actuellement, existent deux types de collisionneurs e⁺e⁻ proposés : les collisionneurs circulaires et les collisionneurs linéaires. Les projets de collisionneurs circulaires e⁺e⁻ à l'étude sont : le futur collisionneur circulaire (FCCee) et le collisionneur circulaire électron-positon (CEPC). Alternativement, les deux projets de collisionneurs linéaires e⁺e⁻ sont : le collisionneur linéaire international (ILC) et le collisionneur linéaire compact (CLIC). Cette thèse porte sur les collisionneurs linéaires e⁺e⁻. Les deux projets de collisionneurs linéaires e⁺e⁻ sont conceptuellement similaires et composés de sous-systèmes similaires. En partant de la source de particules jusqu'au point d'interaction (IP), les principaux sous-systèmes sont : les sources de positons et d'électrons, l'anneau d'amortissement (DR), le transport de l'anneau vers le linac principal (RTML), le linac principal (ML), et le Beam Delivery System (BDS). En particulier, le BDS est composé : d'une section de diagnostic, d'une section de collimation de l'énergie et du bêtatron, et d'un Final Focus System (FFS) où le faisceau est fortement focalisé jusqu'à plusieurs nanomètres au moyen d'un Final Doublet (FD) de quadripôles. La conception du FFS de l'ILC et du CLIC est basée sur le schéma de correction de chromaticité locale. Il utilise des paires d'aimants sextupôlaires entrelacés pour corriger simultanément les chromaticités horizontales et verticales. L'Accelerator Test Facility 2 (ATF2) à KEK (Japon) est une mise en œuvre à une énergie plus bas d’un BDS comme ceux de l'ILC ou du CLIC, comprenant un système FFS. Au cours des dernières années, les réalisations uniques et exceptionnelles de l'ATF2 ont déjà vérifié la faisabilité technique minimale du FFS des collisionneurs linéaires tels que ILC ou CLIC. Cette thèse porte sur l'optimisation du système CLIC FFS pour le premier étage énergétique avec une énergie du centre de masse de 380 GeV. Dans la première partie, l'étude du raccourcissement de la FD pour réduire la chromaticité et une conception optique alternative avec un nouveau profil de dispersion dans la FFS est présentée. Dans la deuxième partie, les études analytique et expérimentale d'une optique FFS de type CLIC pour ATF2, appelée « optique ultra-low β* » sont rapportées. Ces études comprennent : une nouvelle technique d'alignement des octupôles, un nouvel ensemble de « knobs » de réglage à « ultra-low β* » pour mieux contrôler les aberrations et une nouvelle stratégie de réglage alternative comprenant les erreurs statiques effectuées lors des campagnes expérimentales ATF2 en juin 2019, décembre 2019 et mars 2020
Beam optics calculations for CLIC
No full textThis Master's thesis was done in the framework of the Master 2 Grands Instruments program of Université Paris Sud and was conducted at the European Organization for Nuclear Research (CERN). It is dedicated to the Compact LInear Collider (CLIC) beam optics studies for initial energy stage of 380 GeV. The thesis focuses on the Final Focus System (FFS) optics, the very last section of the CLIC Beam Delivery System (BDS). The FFS squeezes the beam strongly at the IP, benefiting from the local chromaticity correction scheme, to reach the target luminosity of cms order. Initially, the FFS nominal optics with m was analyzed to identify the possible ways to optimize the lattice. Then the FFS optics was optimized with MadX and MAPCLASS to achieve a smaller vertical IP beta function of m while preserving small nonlinear contributions to the IP beam size. The analysis of such optics in terms of luminosity and energy bandwidth was conducted with PLACET and GUINEA-PIG, with synchrotron radiation and beam-beam effects taken into account. Following the obtained results, possibilities for further optimization of the FFS were identified
Quasispin models in quantum physics
No full textTitle: Quasispin models in quantum physics Author: Andrii Zymin Department: Institute of Particle and Nuclear Physics Supervisor: Mgr. Pavel Stránský, Ph.D., Institute of Particle and Nuclear Physics Abstract: The use of symmetries in quantum physics helps in a deeper understanding of physical systems and simplifies numerical calculations. This thesis studies models based on the SU(2) algebra, which, in spite of their apparent simplicity, show rather rich behavior and describe a wide spectrum of physical phenomena. We review various realizations of the SU(2) algebra (namely the spin, boson, and fermion realization) and present the most general quantum hamiltonian with one- and two-body interactions, constructed from the SU(2) generators. We perform the classical limit of the hamiltonian and show a numerical study of several particular examples. Keywords: dynamical symmetries, Lipkin model, su(2) algebra, quasispi
Role of surface defects in ceria-based catalysis
No full textTitle: Role of surface defects in ceria-based catalysis Author: Andrii Tovt Department: Department of Surface and Plasma Science Supervisor of the doctoral thesis: doc. Mgr. Josef Mysliveček Ph.D., Department of Surface and Plasma Science Abstract: This work concentrates on the analysis of fundamental physicochemical properties of Pt-CeOx, single-atom Pt1 /CeOx, and inverse CeOx/Cu(111) catalysts. Preparation method for stabilized atomically-dispersed Pt2+ ions on ceria was developed and adsorption sites for Pt ions were thoroughly studied using advanced surface science techniques supported by theoretical methods. The mechanism of Pt2+ stabilization on ceria steps was revealed and the step capacity towards Pt2+ ions was estimated. Also, the preparation method for well-ordered cerium oxide ultrathin films with different stoichiometry and ordering of surface oxygen vacancies was developed, and the Ceria/Cu(111) interaction was investigated. Key words: heterogeneous catalysis, model systems, single-atom catalysis, platinum ions, cerium oxide
Kvazispinové modely v kvantové fyzice
No full textNázev práce: Kvazispinové modely v kvantové fyzice Autor: Andrii Zymin Katedra: Ústav částicové a jaderné fyziky Vedoucí bakalářské práce: Mgr. Pavel Stránský, Ph.D., Ústavčásticové a jaderné fyziky Abstrakt: Využití symetrií v kvantové fyzice pomáhá k hlubšímu porozumění fyzikálních systémů a zjednodušuje numerické výpočty. Tato práce studuje modely založené na algebře SU(2), které i přes zdánlivou jednoduchost vykazují velmi bohaté chování a popisují široké spektrum fyzikálních jevů. Jsou shrnuty různé realizace algebry SU(2) (spinová, bosonová, fermionová). Je předložen nejobecnější tvar kvantového hamiltoniánu zkonstruovaného z generátorů SU(2), který zahrnuje všechny jednočásticové a dvoučásticové interakce, a jeho klasická limita. Několik konkrétních přikladů hamiltoniánu je detailně prezentováno numericky. Kličová slova: dynamické symetrie, SU(2) algebra, kvazispin, klasická limitaTitle: Quasispin models in quantum physics Author: Andrii Zymin Department: Institute of Particle and Nuclear Physics Supervisor: Mgr. Pavel Stránský, Ph.D., Institute of Particle and Nuclear Physics Abstract: The use of symmetries in quantum physics helps in a deeper understanding of physical systems and simplifies numerical calculations. This thesis studies models based on the SU(2) algebra, which, in spite of their apparent simplicity, show rather rich behavior and describe a wide spectrum of physical phenomena. We review various realizations of the SU(2) algebra (namely the spin, boson, and fermion realization) and present the most general quantum hamiltonian with one- and two-body interactions, constructed from the SU(2) generators. We perform the classical limit of the hamiltonian and show a numerical study of several particular examples. Keywords: dynamical symmetries, Lipkin model, su(2) algebra, quasispinÚstav částicové a jaderné fyzikyInstitute of Particle and Nuclear PhysicsMatematicko-fyzikální fakultaFaculty of Mathematics and Physic
Role povrchových defektů v katalýze na oxidech ceru
No full textNázev: Role povrchových defektů v katalýze na oxidech ceru Autor: Andrii Tovt Katedra: Katedra fyziky povrchů a plazmatu Vedoucí doktorské práce: doc. Mgr. Josef Mysliveček Ph.D., Katedra fyziky povrchů a plazmatu Abstract: Práce se zaměřuje na analýzu základních fyzikálně-chemických vlastností modelových katalyzátorů Pt/CeOx, atomárně dispergovaných Pt1 /CeOx a inverzních modelových katalyzátorů CeOx/Cu(111). Byla vyvinuta metoda přípravy stabilizovaných atomově dispergovaných iontů Pt2+ na povrchu oxidu ceru a adsorpční místa pro ionty Pt byla studována s využitím pokročilých technik fyziky povrchů podporovaných teoretickými metodami. Byl identifikovan mechanismus stabilizace Pt2+ na schodech oxidu ceru a byla určena jejích kapacita pro Pt2+ ionty. Také byl vyvinut způsob přípravy velmi dobře uspořádaných ultratenkých vrstev oxidu ceru s různou stechiometrií a uspořádání povrchových kyslíkových vakancí a byla zkoumána interakce CeOx/Cu(111). Klíčová slova: heterogenní katalýza, modelové systémy, katalýza jednotlivých atomů, ionty platiny, oxid ceru.Title: Role of surface defects in ceria-based catalysis Author: Andrii Tovt Department: Department of Surface and Plasma Science Supervisor of the doctoral thesis: doc. Mgr. Josef Mysliveček Ph.D., Department of Surface and Plasma Science Abstract: This work concentrates on the analysis of fundamental physicochemical properties of Pt-CeOx, single-atom Pt1 /CeOx, and inverse CeOx/Cu(111) catalysts. Preparation method for stabilized atomically-dispersed Pt2+ ions on ceria was developed and adsorption sites for Pt ions were thoroughly studied using advanced surface science techniques supported by theoretical methods. The mechanism of Pt2+ stabilization on ceria steps was revealed and the step capacity towards Pt2+ ions was estimated. Also, the preparation method for well-ordered cerium oxide ultrathin films with different stoichiometry and ordering of surface oxygen vacancies was developed, and the Ceria/Cu(111) interaction was investigated. Key words: heterogeneous catalysis, model systems, single-atom catalysis, platinum ions, cerium oxide.Katedra fyziky povrchů a plazmatuDepartment of Surface and Plasma ScienceFaculty of Mathematics and PhysicsMatematicko-fyzikální fakult
Studium oxidace CO a metanolu za vysokého tlaku na katalyzátorech ve formě nanoprášků oxidů kovů vzácných zemin a tenkých vrstev na bázi platiny
No full textNázev práce: Studium oxidace CO a metanolu za vysokého tlaku na katalyzátorech ve formě nanoprášků oxidů kovů vzácných zemin a tenkých vrstev na bázi platiny Autor: Mgr. Andrii Rednyk Katedra / Ústav: Katedra fyziky povrchů a plazmatu Vedoucí doktorské práce: Prof. RNDr. Vladimír Matolín, DrSc. [email protected] Abstrakt: Tato práce se zaměřuje na studium katalytické aktivity oxidů kovů vzácných zemin (REO) ve formě nanoprášků a tenkých vrstev na bázi platiny s využitím mikroreaktoru s vysokotlakou reakční komorou. Nanočástice REO byly připraveny novým přístupem založeným na sol-gelové chemické metodě. Tenkovrstvé vzorky byly připraveny magnetronovým naprašováním. V první části je studována reakce oxidace oxidu uhelnatého (CO oxidation) na REO a na tenkých vrstvách Pt, PtOx. Z připravených nanopráškových oxidů kovů vzácných zemin vykazují velmi dobrou aktivitu oxidy ceru stabilizované aluminou, hlavně z důvodu většího aktivního povrchu.Vrstvy Pt i PtOx deponované na křemíkové podložky vykazuji srovnatelnou aktivitu. Když se jako podložka použije uhlík (grafitová folie nebo uhlíková mezivrstva), aktivita Pt vrstvy poklesne, kdežto PtOx si zachovává vysokou aktivitu. Obsahem druhé části je parní reformace metanolu (SRM) a částečná oxidace metanolu (POM) s katalyzátory na bázi tenkých vrstev s...Title: High pressure CO and methanol oxidation study over nanopowder Rare Earth Oxides and platinum thin film catalysts Author: Mgr. Andrii Rednyk Department: Department of Surface and Plasma Science Supervisor: Prof. RNDr. Vladimír Matolín, DrSc. [email protected] Abstract: This doctoral thesis focuses on reactivity study of nanopowder rare earth oxides (REOs) and platinum based thin film catalysts using microreactor with high pressure reaction cell. REOs nanoparticles were prepared by new approach based on sol-gel chemistry. Magnetron sputtering technique was used for preparation of thin film samples. In the first part of the thesis CO oxidation on REOs and on Pt, PtOx thin films were performed. Among prepared REOs catalyst better activity exhibited alumina stabilized ceria, due to higher surface area. Both Pt and PtOx deposited on silicon substrate exhibited similar activity. When carbon (G-foil or C interlayer) is used as support, activity of Pt thin film decreases while PtOx preserves high activity. In the second part of the thesis steam reforming of methanol (SRM) and partial oxidation of methanol (POM) were performed on Pt thin films. It was shown that PtOx thin film exhibited superior activity compared to other samples with the same thickness. It is due to the reduction of platinum...Katedra fyziky povrchů a plazmatuDepartment of Surface and Plasma ScienceMatematicko-fyzikální fakultaFaculty of Mathematics and Physic
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