Number of found documents: 501
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Labio, a.s. – studie možností rozšíření plynového chromatografu
Divoký, Martin
2015 - Czech
Projekt byl zaměřen na testování a vývoj UV plynového chromatografu Labio G11. Spektrometr chromatografu byl modifikován, aby došlo k rychlejšímu propláchnutí vnitřního prostoru dusíkem (neabsorbuje v UV) a byla uspíšena připravenost k provozu. Dále byla otestována citlivost spektrometru v UV pod 150 nm a navrženy možnosti rozšíření citlivosti v této oblasti. This project aimed at testing and development of a UV gas chromatograph Labio G11. A spectrometer from the chromatograph was modified in order to increase nitrogen gas flow in the device and speed at which the inner of the spectrometer is filled with nitrogen (that doesn’t absorb in UV). This allowed decreasing startup time of the spectrometer. Additionally, sensitivity of the spectrometer in region below 150 nm was tested and ways to increase this sensitivity were proposed. Keywords: UV detection; UV absorption; gas flow; gas mixing Available at various institutes of the ASCR
Labio, a.s. – studie možností rozšíření plynového chromatografu

Projekt byl zaměřen na testování a vývoj UV plynového chromatografu Labio G11. Spektrometr chromatografu byl modifikován, aby došlo k rychlejšímu propláchnutí vnitřního prostoru dusíkem (neabsorbuje v ...

Divoký, Martin
Fyzikální ústav, 2015

Fabrication methods of diamond coated Love wave SAW biosensors for bacterial detection applications
Drbohlavová, L.; Bulíř, J.; Valeš, Václav; Jákl Křečmarová, M.; Taylor, Andrew; Talbi, A.; Soltani, A.; Mortet, Vincent
2015 - English
Pathogen detection has a huge importance in the food industry and it can play significant role in the medical practice. This paper focus on the fabrication methods of diamond coated Love wave surface acoustic wave (LW-SAW) biosensors for bacteria detection. LW-SAW sensors have been fabricated on AT-quartz crystals. Interdigitated transducers have been patterned by RF sputtering and photolithography techniques. Amorphous silicon oxide (SiO2) guiding layer and nano-crystalline diamond layer were both deposited by plasma enhanced chemical vapor deposition at low temperature. Preliminary experimental study of diamond surface termination for sensors bio-functionalization is also reported. Keywords: biosensors; LW-SAW Available at various institutes of the ASCR
Fabrication methods of diamond coated Love wave SAW biosensors for bacterial detection applications

Pathogen detection has a huge importance in the food industry and it can play significant role in the medical practice. This paper focus on the fabrication methods of diamond coated Love wave surface ...

Drbohlavová, L.; Bulíř, J.; Valeš, Václav; Jákl Křečmarová, M.; Taylor, Andrew; Talbi, A.; Soltani, A.; Mortet, Vincent
Fyzikální ústav, 2015

Influence of incorporated nanodiamond particles on mechanical properties of composite material based on multi-layer PVA nanofiber textiles
Prošek, Zdeněk; Indrová, K.; Rácová, Z.; Ryparová, Pavla; Nežerka, V.; Topič, J.; Tesárek, Pavel; Kromka, Alexander
2015 - English
The present study investigates the influence of NDP on mechanical properties of multi-layer PVA nanofiber textiles. The particles of a diameter equal to 5 nm were incorporated into double- and triple-layer textiles, while the single-layer samples were prepared as the reference. The diameter of PVA nanofibers varied from 100 to 300 nm. We characterized the tensile strength, stiffness and ductility of fabricated nanofibers by using a conventional method – a tensile test. We found that the NDP-enriched nanofibers reveal antibacterial character. However, none or negligible influence of NDP additions on the tested mechanical properties was observed. Keywords: nanofibers; PVA; nanodiamonds; electrospinning; mechanical properties; SEM Available at various institutes of the ASCR
Influence of incorporated nanodiamond particles on mechanical properties of composite material based on multi-layer PVA nanofiber textiles

The present study investigates the influence of NDP on mechanical properties of multi-layer PVA nanofiber textiles. The particles of a diameter equal to 5 nm were incorporated into double- and ...

Prošek, Zdeněk; Indrová, K.; Rácová, Z.; Ryparová, Pavla; Nežerka, V.; Topič, J.; Tesárek, Pavel; Kromka, Alexander
Fyzikální ústav, 2015

Fabrication of 3D diamond membranes for microfluidic systems
Varga, Marián; Babchenko, Oleg; Bauerová, Pavla; Hruška, Karel; Jurka, Vlastimil; Kromka, Alexander; Rezek, Bohuslav
2015 - English
Perfusion of cell medium, especially in microfluidic devices, can provide in-vivo-like conditions for cell cultures. The most recent demand on such systems is to include electronically active artificial cell support for in-situ monitoring. Diamond thin films exhibit advantageous combination of physical, mechanical, chemical, biocompatible and electronic properties for this purpose. In this work we explore two strategies for fabrication of self-standing three-dimensional nanocrystalline diamond membrane for implementation in microfluidic invivo like experiments: i) nucleation and chemical vapour deposition (CVD) growth of diamond on porous 3D carbon foam (with 80 pores per inch) and ii) selective diamond growth predefined by photolithographic processing using copper grid mask. The morphology and material quality of the fabricated membranes are characterized by scanning electron microscopy and Raman spectroscopy. Keywords: nanocrystalline diamond; membranes; microwave plasma; microfluidics; carbon foam Available at various institutes of the ASCR
Fabrication of 3D diamond membranes for microfluidic systems

Perfusion of cell medium, especially in microfluidic devices, can provide in-vivo-like conditions for cell cultures. The most recent demand on such systems is to include electronically active ...

Varga, Marián; Babchenko, Oleg; Bauerová, Pavla; Hruška, Karel; Jurka, Vlastimil; Kromka, Alexander; Rezek, Bohuslav
Fyzikální ústav, 2015

(100) substrate processing optimization for fabrication of smooth boron doped epitaxial diamond layer by PE CVD
Mortet, Vincent; Fekete, Ladislav; Ashcheulov, Petr; Taylor, Andrew; Hubík, Pavel; Trémouilles, D.; Bedel-Pereira, E.
2015 - English
Boron doped diamond layers were grown in an SEKI AX5010 microwave plasma enhanced chemical vapour deposition system. Effect of surface preparation, i.e. polishing and O2/H2 plasma etching on epitaxial growth on type Ib (100) HPHT synthetic diamonds were investigated. Using optimized substrate preparation, smooth (RRMS ~ 1 nm) boron doped diamond layers with metallic conduction and free of un-epitaxial crystallites were grown with a relatively high growth rate of 3.7 μm/h. Diamond were characterized by optical microscopy, optical profilometry, atomic force microscopy and Hall effect. Keywords: doping; PE CVD; diamond; surface treatment; thin film Available at various institutes of the ASCR
(100) substrate processing optimization for fabrication of smooth boron doped epitaxial diamond layer by PE CVD

Boron doped diamond layers were grown in an SEKI AX5010 microwave plasma enhanced chemical vapour deposition system. Effect of surface preparation, i.e. polishing and O2/H2 plasma etching on epitaxial ...

Mortet, Vincent; Fekete, Ladislav; Ashcheulov, Petr; Taylor, Andrew; Hubík, Pavel; Trémouilles, D.; Bedel-Pereira, E.
Fyzikální ústav, 2015

Plazmatická příprava tlustých kovových vrstev pro mechanické rytí blejzovaných difrakčních mřížek
Olejníček, Jiří
2015 - Czech
Smluvní výzkum byl zaměřen přípravu a optimalizaci procesu depozice vybraných tlustých kovových vrstev o tloušťce 5 až 10 µm na leštěné skleněné substráty. Ze strany zadavatele byl kladen důraz zejména na mechanické vlastnosti vrstev: adheze, porozita, homogenita, tvrdost a časová stálost. Contract research was focused on preparation and optimization of the deposition process of the selected thick metal layers with a thickness 5 to 10 microns on a polished glass substrates. The emphasis was mainly on the mechanical properties of films: adhesion, porosity, homogeneity, hardness and time stability. Keywords: magnetron sputtering; thin films; surface properties Available at various institutes of the ASCR
Plazmatická příprava tlustých kovových vrstev pro mechanické rytí blejzovaných difrakčních mřížek

Smluvní výzkum byl zaměřen přípravu a optimalizaci procesu depozice vybraných tlustých kovových vrstev o tloušťce 5 až 10 µm na leštěné skleněné substráty. Ze strany zadavatele byl kladen důraz ...

Olejníček, Jiří
Fyzikální ústav, 2015

DEL a.s. – Využití laserové technologie
Flimelová, Miroslava; Bičišťová, Radka; Brajer, Jan
2015 - Czech
Cílem studie je poskytnout zadavateli dostatečné a konkrétní informace a podklady k výběru a následnému nákupu laserového zdroje a vhodného příslušenství k němu. Laserový zdroj bude využit jako technologický nástroj v budovaném inovačním centru společnosti k technologickým zkouškám, poloprovozním testům a vývoji nových komerčních aplikací. The aim of the study is to provide sufficient and specific information and documents on the selection and subsequent purchase of a laser source suitable accessories for it . The laser source will be used as a technological tool in building the company's innovation center for technological tests , pilot tests and develop new commercial applications . Keywords: laser welding; hardening; engraving; powder coating Available at various institutes of the ASCR
DEL a.s. – Využití laserové technologie

Cílem studie je poskytnout zadavateli dostatečné a konkrétní informace a podklady k výběru a následnému nákupu laserového zdroje a vhodného příslušenství k němu. Laserový zdroj bude využit jako ...

Flimelová, Miroslava; Bičišťová, Radka; Brajer, Jan
Fyzikální ústav, 2015

Mitsubishi Heavy Industries Aero Engines, Ltd. – Feasibility test of short pulse laser drilling on metal alloy plate
Miura, Taisuke
2015 - English
We have constructed a laser drilling station for metal plates supplied by MHIAEL. We have succeeded to demonstrate the fast drilling on the metal plates within 0.1sec using our thin disk regenerative amplifier. This result leaded to the additional contract with the guest on February 2016. Keywords: short pulse laser; drilling; metal alloy Available at various institutes of the ASCR
Mitsubishi Heavy Industries Aero Engines, Ltd. – Feasibility test of short pulse laser drilling on metal alloy plate

We have constructed a laser drilling station for metal plates supplied by MHIAEL. We have succeeded to demonstrate the fast drilling on the metal plates within 0.1sec using our thin disk regenerative ...

Miura, Taisuke
Fyzikální ústav, 2015

Utsunomiya University – Prototyping of pump laser optics for compact thin disk head
Miura, Taisuke
2015 - English
We have constructed a compact thin disk head designed by HiLASE. We demonstrated the CW output from the thin disk head with the efficiency of higher than 30% and the good beam quality. This result leaded to the additional contract with Utsunomiya University on February 2016. Keywords: pump laser; optics; compact thin disk head Available at various institutes of the ASCR
Utsunomiya University – Prototyping of pump laser optics for compact thin disk head

We have constructed a compact thin disk head designed by HiLASE. We demonstrated the CW output from the thin disk head with the efficiency of higher than 30% and the good beam quality. This result ...

Miura, Taisuke
Fyzikální ústav, 2015

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

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