Number of found documents: 483
Published from to

MEDICEM Institute, spol. s.r.o. - Technology to shape hydrogels by lasers
Rostohar, Danijela; Flimelová, Miroslava
2015 - English
We have prepared study with aim to propose a technology allowing to shape hydrogels by lasers and to describe a project (including timelines, milestones, team and budget) that would lead to the development of such technology, including supportive scientific, technical and theoretical information. Keywords: hydrogels; lasers; intraocular implants; intraocular lenses Available at various institutes of the ASCR
MEDICEM Institute, spol. s.r.o. - Technology to shape hydrogels by lasers

We have prepared study with aim to propose a technology allowing to shape hydrogels by lasers and to describe a project (including timelines, milestones, team and budget) that would lead to the ...

Rostohar, Danijela; Flimelová, Miroslava
Fyzikální ústav, 2015

Growth of Escherichia coli on nanocrystalline diamond
Jurková, Blanka; Kozak, Halyna; Artemenko, Anna; Ukraintsev, Egor; Beranová, J.; Konopásek, I.; Kromka, Alexander
2015 - English
In this contribution, we compared the attachment of gram-negative model bacterium Escherichia coli to\nuncoated glass and glass coated by hydrogenated and oxidized NCD films. For attachment experiments,\ncontinuous cultivation in commercially available CDC Bioreactor was used. Antibacterial tests indicated\nhigher attachment of gram-negative model bacterium Escherichia coli to NCD surface compared to uncoated\nglass. We assign this effect to higher roughness of NCD surface compared to glass. Bacterial cells preferred\nthe hydrophobic surface of hydrogenated NCD surface to hydrophilic oxidized NCD for their attachment. Keywords: nanocrystalline diamond; bacteria; Escherichia coli; anti-adhesive; CDC Bioreactor Available at various institutes of the ASCR
Growth of Escherichia coli on nanocrystalline diamond

In this contribution, we compared the attachment of gram-negative model bacterium Escherichia coli to\nuncoated glass and glass coated by hydrogenated and oxidized NCD films. For attachment ...

Jurková, Blanka; Kozak, Halyna; Artemenko, Anna; Ukraintsev, Egor; Beranová, J.; Konopásek, I.; Kromka, Alexander
Fyzikální ústav, 2015

Thermocouples
Kopeček, Jaromír
2015 - English
Analsis of different samples of thermocouples before and after laser marking what is used to produce barcode close to spike of the probes. The aim is to investigate the influence of laser marking by detailed analysis of the material structure of the samples. Keywords: laser marking; thermocouple; analysis; inconel Available at various institutes of the ASCR
Thermocouples

Analsis of different samples of thermocouples before and after laser marking what is used to produce barcode close to spike of the probes. The aim is to investigate the influence of laser marking by ...

Kopeček, Jaromír
Fyzikální ústav, 2015

Hydrogen-terminated diamond surface as gas sensing layer working at room temperature
Davydova, Marina; Kulha, P.; Babchenko, Oleg; Kromka, Alexander
2015 - English
Effect of fluorine- and hydrogen-terminated diamond surface on the gas sensing properties at room temperature was investigated. The gas sensing properties diamond-based sensor were measured by the changes of electrical resistance to various volatile organic compounds (C6H6, C3H6O, isopropylalcohol) and relative humidity. The comparative sensing performance of hydrogenated diamond surface shows improvement in sensitivity toward benzene, acetone, isopropylalcohol and humid air in contrast to fluorinated diamond surface, where the surface conductivity was suppressed. Keywords: diamond; gas sensor; response; sensitivity Available at various institutes of the ASCR
Hydrogen-terminated diamond surface as gas sensing layer working at room temperature

Effect of fluorine- and hydrogen-terminated diamond surface on the gas sensing properties at room temperature was investigated. The gas sensing properties diamond-based sensor were measured by the ...

Davydova, Marina; Kulha, P.; Babchenko, Oleg; Kromka, Alexander
Fyzikální ústav, 2015

Calculations of nanocrystalline diamond-covered waveguides based on amorphous silicon
Jirásek, Vít; Prajzler, Václav; Remeš, Zdeněk
2015 - English
Nanocrystalline diamond (NCD) coatings on planar waveguides (WG) in the IR region allow to design optical sensors sensitive to absorbers like proteins or other biomolecules. In this contribution, we present a 2D model of a multi-layer WG developed under FEM (finite element method) simulation software Comsol Multiphysics. The model is based on the modified wave equation solved in the frequency domain and includes optical absorption. It was found that for the single-mode WG working in the narrow region of 1550-2000 nm the silicon thickness must be 150-320 nm. It was found that in order to keep a reasonable signal attenuation, the NCD film must be prepared with the optical absorption coefficient lower than 10 cm-1, being a rather challenging task. Dependencies of the signal attenuation on the NCD film thickness, absorbing layer height, its absorption coefficient and exciting wavelengths are presented.\n Keywords: nanocrystalline diamond; amorphous silicon; optical waveguides; FEM simulations Available at various institutes of the ASCR
Calculations of nanocrystalline diamond-covered waveguides based on amorphous silicon

Nanocrystalline diamond (NCD) coatings on planar waveguides (WG) in the IR region allow to design optical sensors sensitive to absorbers like proteins or other biomolecules. In this contribution, we ...

Jirásek, Vít; Prajzler, Václav; Remeš, Zdeněk
Fyzikální ústav, 2015

Doped DLC coatings for biomedical applications
Písařík, Petr
2015 - English
Nowadays there are materials having excellent properties for use in medicine (Diamond-like carbon, Hydroxyapatite, …). Diamond-like carbon (DLC) is a metastable form of amorphous carbon containing bonded carbon atoms of sp2 and sp3 hybridized orbital. DLC layers are semiconductors with high mechanical hardness, chemical inertness, low coefficient of friction, high thermal conductivity, good electrical and optical properties, biocompatibility and no cytotoxicity. All properties of the films are not always ideal, so it is necessary to modify the layer. One example of how to modify the properties of thin layers are dopations. The incorporation of dopants in films may lead to greater multifunctionality and much improved properties. Most modifications were made to modify contact angle and surface energy, to reduce internal stresses, to decrease surface roughness, coefficient of friction or wear.... Keywords: silver doped; diamond like carbon; thin layers; mechanical properties Available at various institutes of the ASCR
Doped DLC coatings for biomedical applications

Nowadays there are materials having excellent properties for use in medicine (Diamond-like carbon, Hydroxyapatite, …). Diamond-like carbon (DLC) is a metastable form of amorphous carbon containing ...

Písařík, Petr
Fyzikální ústav, 2015

Studium tepelných procesů v systému Er:Li.sub.2./sub.O-Y.sub.2./sub.O.sub.3./sub.-P.sub.2./sub.O.sub.5./sub
Zemenová, Petra; Král, Robert; Nitsch, Karel; Cihlář, Antonín; Bystřický, Aleš
2015 - Czech
Tato práce se zabývá studiem vlivu velikosti částic práškových vzorků podchlazené taveniny Er:Li2O-Y2O3-P2O5 při tepelném zatížení na efekty skelné transformace a krystalizace. Dále se zabývá charakterizací mineralogického složení produktů krystalizace a stanovením materiálových vlastností připraveného skla. This work deals with a study of the particle size influence of the thermally treated Er:Li2O-Y2O3-P2O5 glassy powder samples on the effects of glass transformation and crystallization. Further, it presents the mineralogical composition of the crystallization products and material properties of prepared glasses. Keywords: crystallization; system Er:Li.sub.2./sub.O-Y.sub.2./sub.O.sub.3./sub.-P.sub.2./sub.O.sub.5./sub. Available at various institutes of the ASCR
Studium tepelných procesů v systému Er:Li.sub.2./sub.O-Y.sub.2./sub.O.sub.3./sub.-P.sub.2./sub.O.sub.5./sub

Tato práce se zabývá studiem vlivu velikosti částic práškových vzorků podchlazené taveniny Er:Li2O-Y2O3-P2O5 při tepelném zatížení na efekty skelné transformace a krystalizace. Dále se zabývá ...

Zemenová, Petra; Král, Robert; Nitsch, Karel; Cihlář, Antonín; Bystřický, Aleš
Fyzikální ústav, 2015

Škoda Auto a.s. – Výběr optimálního typu laseru pro laserové popisování plechů
Švábek, Roman; Bičišťová, Radka; Flimelová, Miroslava
2015 - Czech
Experimentální popis materiálů laserem s ohledem na technologické požadavky v zadání – použití vhodných typů laserů na základě rešerše (fáze I) a specifikování jejich klíčových technických parametrů (kontinuální vs pulsní režim, vlnová délka, délka pulsu tvar pulsu, výkon, frekvence atd.). Výstupem je doporučení vhodného typu laseru vhodného pro tuto technologii. Experimental processing of materials with laser beam according the technological requirements of the assignment - the use of appropriate types of lasers based on research ( Phase I) and specify their key technical parameters ( continuous vs pulsed mode, wavelength, pulse duration , pulse shape , power, frequency etc. ). The output is a recommendation of the appropriate type of laser suitable for this technology. Keywords: laser material processing Available at various institutes of the ASCR
Škoda Auto a.s. – Výběr optimálního typu laseru pro laserové popisování plechů

Experimentální popis materiálů laserem s ohledem na technologické požadavky v zadání – použití vhodných typů laserů na základě rešerše (fáze I) a specifikování jejich klíčových technických parametrů ...

Švábek, Roman; Bičišťová, Radka; Flimelová, Miroslava
Fyzikální ústav, 2015

L.E.T. optomechanika Praha, spol. s.r.o. – testování tenkých vrstev vytvořených napařováním a naprašováním
Řeháková, Martina
2015 - Czech
Byly otestovány tenké vrstvy vytvořené napařováním a naprašováním, které jsou používány pro optické komponenty výkonových laserů, podle požadavků zadavatele.: materiály podložek: floutová skla, borosilikátová skla, apod.; antireflexní vrstvy širokopásmové, dvouvrstvé, jednoduché; reflexní vrstvy Al, Al + SiO2, +MgF2; vrstvy Cr , Cr2O3, Au a případně další varianty dle požadavků. Were tested by thin layer formed by deposition and sputtering, which are used for optical components power lasers, according to customer requirements.: based material. float glass, borosilicate glass, etc.; broadband anti-reflection coating, dual-layer, single; reflective layer Al, Al + SiO2 + MgF2;layers of Cr, Cr2O3, Au or other variants as required Keywords: optical reflective layers; reflectance; thickness of layer; roughness of layer; resistance layers testing in laser beam Available at various institutes of the ASCR
L.E.T. optomechanika Praha, spol. s.r.o. – testování tenkých vrstev vytvořených napařováním a naprašováním

Byly otestovány tenké vrstvy vytvořené napařováním a naprašováním, které jsou používány pro optické komponenty výkonových laserů, podle požadavků zadavatele.: materiály podložek: floutová skla, ...

Řeháková, Martina
Fyzikální ústav, 2015

FLC-15: Challenges in polar self-assembling systems
Bubnov, Alexej; Glogarová, Milada
2015 - English
This is the Book of Abstracts for the 15th International Conference on Ferroelectric Liquid Crystals (FLC-15 conference) held in Prague on June 28 - July 3, 2015. The broadening of the field compared to the beginning of this biennial series in 1987 is expressed in the conference subtitle: Challenges in polar self-assembling systems. The continuous worldwide interest to this conference series is proving that it has still a respected position within the series of International/European conferences on liquid crystals covering all interdisciplinary field of the liquid crystal research. At the FLC-15 conference more than 130 participants from 25 countries all over the world will present 5 key-note lectures, 14 invited talks and selected 39 oral contributions. The number has been limited to keep the single session conference format as it is a tradition for the FLC conference series. About 90 posters were presented in two poster sessions. For your convenience, the FLC-15 conference program is presented in this book. Keywords: ferroelectric liquid crystals; polar liquid crystalline phases Available at various institutes of the ASCR
FLC-15: Challenges in polar self-assembling systems

This is the Book of Abstracts for the 15th International Conference on Ferroelectric Liquid Crystals (FLC-15 conference) held in Prague on June 28 - July 3, 2015. The broadening of the field compared ...

Bubnov, Alexej; Glogarová, Milada
Fyzikální ústav, 2015

About project

NRGL provides central access to information on grey literature produced in the Czech Republic in the fields of science, research and education. You can find more information about grey literature and NRGL at service web

Send your suggestions and comments to nusl@techlib.cz

Provider

http://www.techlib.cz

Facebook

Other bases