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silicon nitride ceramic ring biological filter media in france

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  • CeramTec – The Ceramic Experts

    Silicon nitride (Si3N4) waveguides offer low-loss wave propagation over a wide spectral range including visible wavelengths and lend themselves to photonic integrated circuits for bio-photonic applications. The Si3N4 device portfolio, however, is so far limited to passive devices that need to be fed by external light sources. This often requires delicate and costly fiber-chip coupling …

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  • OSA | Lasing in Si3N4-organic hybrid (SiNOH) waveguides

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  • Optical instability and self-pulsing in silicon nitride ...

    We report time domain observations of optical instability in high Q silicon nitride whispering gallery disk resonators. At low laser power the transmitted optical power through the disk looks chaotic. At higher power, the optical output settles into a stable self-pulsing regime with periodicity ranging from hundreds of milliseconds to hundreds of seconds.

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  • Silicon Nitride Nanosieve Membrane | Nano Letters

    2019-5-26 · An array of very uniform cylindrical nanopores with a pore diameter as small as 25 nm has been fabricated in an ultrathin micromachined silicon nitride membrane using focused ion beam (FIB) etching. The pore size of this nanosieve membrane was further reduced to below 10 nm by coating it with another silicon nitride layer. This nanosieve membrane possesses adequate …

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    2017-10-1 · Marine biological fouling (or simply biofouling) is the accumulation of colonies of marine-based micro and macro-organisms on wetted/submerged surfaces. Depending on the most abundant population, biofouling could be detrimental to the substratum (e.g. the surface of sea vessels) and could also waste its resources.

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  • Coatings | Special Issue : Applications of Optical Thin ...

    2018-12-30 · An ultra-high reflector at 1319 nm with reflectivity of 99.992% (measured by cavity-ring down method) was successfully deposited on a φ100 mm × 25 mm single crystal silicon substrate whose surface roughness was approximately 0.420 nm. The surface figure of the reflector was accurately controlled superior to 1/6λ (λ = 632.8 nm).

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  • Invited Presentations - IL-PIB

    2019-2-5 · A review on the applications and challenges of active silicon ring resonators K. Jamshidi 1, M. Catuneanu 1, N. Annavarapu 1, S. Dev 1, S. Sabouri 1, R. Hamerly 2, D. Gray 3, C. Rogers 3, D. Heydari 3, and H. Mabuchi 3 1 Integrated Photonic Devices Group, TU Dresden, Germany 2 Research Laboratory of Electronics, MIT, USA

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  • ECCN list ; Export Control Classification Number

    2020-9-11 · For a report of technical and administrative expertise of a product manufactured in the United States of America (or incorporated in a European equipment, or other region of the world) exported outside the USA by a European country or by other countries of the world, please contact the head of the French company Technidouanes, Albert Castel, French expert on dual-use goods.

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  • Microchip devices for delivery of molecules and methods of ...

    Other representative materials of construction include metals; semi-conductors, such as silicon; and ceramic materials, such as alumina (aluminum oxide), aluminum nitride, silicon dioxide, silicon nitride, and other various nitrides and oxides. For in vivo applications, the substrate can be formed or coated with a biocompatible material.

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  • Advanced composite materials: new production

    Resume : Silicon nitride (Si3N4) is a very important structural ceramic, with good combination of mechanical properties at ambient and high temperatures, excellent wear resistance, thermal shock and corrosion resistance. There are several processing routs for fabrication of fully dense Si3N4, including pressure-less sintering (with sintering ...

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  • Invited Presentations - IL-PIB

    2019-2-5 · A review on the applications and challenges of active silicon ring resonators K. Jamshidi 1, M. Catuneanu 1, N. Annavarapu 1, S. Dev 1, S. Sabouri 1, R. Hamerly 2, D. Gray 3, C. Rogers 3, D. Heydari 3, and H. Mabuchi 3 1 Integrated Photonic Devices Group, TU Dresden, Germany 2 Research Laboratory of Electronics, MIT, USA

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  • Microchip devices for delivery of molecules and methods of ...

    Other representative materials of construction include metals; semi-conductors, such as silicon; and ceramic materials, such as alumina (aluminum oxide), aluminum nitride, silicon dioxide, silicon nitride, and other various nitrides and oxides. For in vivo applications, the substrate can be formed or coated with a biocompatible material.

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  • The Wassenaar Arrangement - List of Dual Use-Goods and ...

    2. Polysilazanes (for producing silicon nitride); 3. Polycarbosilazanes (for producing ceramics with silicon, carbon and nitrogen components); f. Ceramic-ceramic 'composite' materials with an oxide or glass 'matrix' reinforced with continuous fibres from any of …

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    K850 Critical Point Dryer with Thermoelectronic Heating and Adiabatic Cooling. The K850 Critical Point Dryer is designed for use with CO 2, having first replaced any water in the specimen by a series of dehydration, often in the same fluid such as Acetone, which will also be the intermediate fluid. (Wet Specimen) – Water – Acetone – 30% – 100% – CO 2 – C.P.D. – (Dry Specimen)

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  • John Donegan : School of Physics - Trinity College Dublin

    McCloskey, D., Donegan, J.F., Silicon nitride microdisks in the visible range, Proceedings of the 3th International Conference on Transparent Optical Networks, International Conference on Transparent Optical Networks, Stockholm, 28-30 June, 2011, pp5971052 Conference Paper, 2011 DOI

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  • CLEO:2011 Postdeadline Papers - Del Mar Photonics

    2011-4-28 · combine LC‐split ring resonators and high mobility twodimensional electron gas (2DEG) into a THz metamaterial where we observe strong light‐matter coupling between the cyclotron transition and the modes of the split‐ring resonators. CLEO: QELS Fundamental Science 3: Metamaterials and Complex Media PDPC7 • 21:00

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  • Advanced composite materials: new production

    Resume : Silicon nitride (Si3N4) is a very important structural ceramic, with good combination of mechanical properties at ambient and high temperatures, excellent wear resistance, thermal shock and corrosion resistance. There are several processing routs for fabrication of fully dense Si3N4, including pressure-less sintering (with sintering ...

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  • Scientific, Clinical, Regulatory, and Economic Aspects of ...

    Silicon nitride (Si 3 N 4) is a ceramic material with similar strength and compression to PEEK and Ti. 56 Silicon nitride has a hydrophilic, negatively charged surface that facilitates osseointegration by increasing adhesion of cells and proteins. 57 This unique material has an ability to decrease bacterial biofilm formation in comparison to ...

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  • Review of flexible microelectromechanical system sensors ...

    2021-4-27 · The filter had a peak insertion loss of −1.14 dB, a −3 dB bandwidth of 107 MHz and a temperature coefficient of frequency of −27 ppm/°C. At the test state of 2.5-mm bending radius, the filter showed no significant performance degradation. This filter shows promise as an important component of future flexible wireless-communication systems.

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  • Microchip devices for delivery of molecules and methods of ...

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    Flexible substrates have become essential in order to provide increased flexibility in wearable sensors, including polymers, plastic, paper, textiles and fabrics. This study is to comprehensively summarize the bending capabilities of flexible polymer substrate for general Internet of Things (IoTs) applications. The basic premise is to investigate the flexibility and bending ability of …

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    Following the successful editions in 2016 and 2018, the Symposium is devoted to academic and industrial partners working on the substitution and recycling of critical raw materials (CRMs) in electronic, magnetic and energy harvesting devices. The objective is to strengthen the synergies in this community and promote the development of new efficient CRM-free/lean devices.Scope:

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  • Telecommunication Report, Telecommunication Market

    Ceramic Packages Market Report: Trends, Forecast and Competitive Analysis product type (alumina ceramics, aluminum nitride ceramics, and others), end use industry (consumer electronics, construction, healthcare and others), and region (North America, Europe, Asia Pacific (APAC), and Rest of the World (ROW) Publication date: Get it in 2 to 4 ...

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  • Microchip devices for delivery of molecules and methods of ...

    We claim: 1. A method of fabricating an implantable microchip device for the controlled release of drug molecules, the method comprising: molding or casting a material in a mold to form a substrate for use in an implantable drug delivery device, wherein a surface of the mold has a plurality of protrusions which form reservoirs in the substrate; microinjecting or inkjet printing a fluid to form ...

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    2018-8-14 · The general process for silicon-based cell fabrication is as follows. A polished silicon wafer is lithographically patterned and the cavities of the desired size are then etched through the wafer using either wet chemical etching or deep reactive ion etching. The cavities can also be created using abrasive machining or ultrasonic drilling.

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  • Scientific, Clinical, Regulatory, and Economic Aspects of ...

    Silicon nitride (Si 3 N 4) is a ceramic material with similar strength and compression to PEEK and Ti. 56 Silicon nitride has a hydrophilic, negatively charged surface that facilitates osseointegration by increasing adhesion of cells and proteins. 57 This unique material has an ability to decrease bacterial biofilm formation in comparison to ...

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  • Directional Freeze‐Casting: A Bioinspired Method to ...

    2020-4-30 · Ceramic cryogels/foams were first reported by Mahler and Bechtold, 43 through freeze-drying of metal and metal oxide powders. 44 Since then, numerous works have been reported 45 for the preparation of various ceramic-based 3D materials, such as alumina, silica, titania, hydroxyapatite silicon oxycarbide, to name only a few.

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    2021-1-9 · The thiazole ring can be cleaved, so that the reagent behaves as a formyl anion equivalent; see also Benzothiazole, A10380, and 2-(Trimethyl­silyl)­thiazole, B21903. Unlike 2-lithiobenzothiazole, reaction with a chiral aldehyde can be diastereoselective: Tetrahedron Lett. , …

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    2021-5-17 · By the optical pump-and-probe technique, picosecond acoustic pulses are excited and detected in thin transparent double-layer films of silica and silicon nitride upon opaque chromium substrates. By taking both acoustic and optical multiple reflections into account, one can successfully model the main features of the reflectance variation.

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