scholarly journals Shine-Through Luminescent Wood Membranes

2022 ◽  
Author(s):  
Maximilian Ritter ◽  
Ingo Burgert ◽  
Guido Panzarasa
Keyword(s):  
Mechanical Properties ◽  
Optical Anisotropy ◽  
Promising Material ◽  
Indoor Lighting ◽  
State Of Art

Thanks to its optical anisotropy and mechanical properties, luminescent wood is a promising material for indoor lighting applications. However, state-of-art approaches make use of potentially toxic fluorophores and of non-biodegradable...

scholarly journals Synthesis of Graphene on Ni/SiC Structure

2016 ◽  
Vol 67 (2) ◽  
pp. 149-151 ◽  
Author(s):  
Petr Machac ◽  
Tomas Hrebicek
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Scientific Community ◽  
Nickel Silicide ◽  
Promising Material ◽  
Layer Graphene ◽  
Optical And Mechanical Properties ◽  
Few Layer Graphene

Abstract graphene is a promising material with excellent electrical, thermal, optical and mechanical properties. Therefore, it is a material of high relevance for various applications in many branches of technique. Graphene has received much attention recently in scientific community. The contribution reports formation and characterization of few-layer graphene (FLG) films on a SiC substrate from nickel silicide supersaturated with carbon by annealing at a favourable low temperature.

INTERMETALLIC COMPOUND AlxTi – ARE PROMISING MATERIAL FOR HIGH ELEVATED TEMPERATURES (review) Part 2. The mechanical properties of the intermetallic Al2Ti compound and the effect of alloying

2021 ◽  
pp. 32-47
Author(s):  
N.A. Nochovnaya ◽  
◽  
V.I. Ivanov ◽  
L.Yu. Avilochev ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phase Composition ◽  
Intermetallic Compound ◽  
Elevated Temperatures ◽  
Niobium Alloy ◽  
Promising Material ◽  
Two Phase ◽  
Heat Resistant ◽  
Refractory Elements ◽  
Additional Doping

Intermetallide alloys based on the Al2Ti compound are the most promising heat-resistant materials for future energy plants.The review examines the mechanical properties of the Al2Ti Intermetalide, two-phase alloys based on it and the doped niobium alloy. For use at temperatures of up to 950 °С, alloys with phase composition r-Al2Ti + γ-TiAl and platemicrostructure with additional doping of refractory elements are of interest.

scholarly journals Opto-mechanical properties of fibres—4: Optical anisotropy in ‘Terylene’ polyester fibres

1992 ◽  
Vol 11 (3) ◽  
pp. 233-245 ◽  
Author(s):  
A.A. Hamza ◽  
I.M. Fouda ◽  
T.Z.N. Sokkar ◽  
M.M. Shahin ◽  
E.A. Seisa
Keyword(s):  
Mechanical Properties ◽  
Optical Anisotropy

scholarly journals Recent Advances on Renewable and Biodegradable Cellulose Nanopaper Substrates for Transparent Light-Harvesting Devices: Interaction with Humid Environment

2019 ◽  
Vol 2019 ◽  
pp. 1-16 ◽  
Author(s):  
Alessandra Operamolla
Keyword(s):  
Mechanical Properties ◽  
Printed Electronics ◽  
Photovoltaic Devices ◽  
High Transparency ◽  
Humid Environment ◽  
Absorption Of Light ◽  
Cellulose Nanopaper ◽  
Optical And Mechanical Properties ◽  
State Of Art ◽  
The Ideal

Cellulose nanopaper (CNP) has attracted much interest during the last decade as a new fascinating renewable and biodegradable substrate for printed electronics and solar cells. Its outstanding optical and mechanical properties make CNP the ideal substrate for the preparation of photovoltaic devices, since its high transparency and haze favour the absorption of light from the active layer of the solar cell. However, some advances need to be done in the direction of increasing CNP stability in humid environment without compromising its remarkable advantages. This review critically points at these aspects, presenting an overview of state-of-art solutions to enhance nanopaper stability in a humid environment.

Repairing of Osteochondral Defects in Joint Using Beta-TCP/ Carboxymethyl Chitin Composite

2005 ◽  
Vol 284-286 ◽  
pp. 791-794 ◽  
Author(s):  
Shingo Masuda ◽  
Yusuke Yoshihara ◽  
Kazuaki Muramatsu ◽  
Izumi Wakebe
Keyword(s):  
Mechanical Properties ◽  
Articular Cartilage ◽  
Tricalcium Phosphate ◽  
Bone Repair ◽  
Bone Defects ◽  
Promising Material ◽  
Osteochondral Defects ◽  
Repair Rate ◽  
Beta Tricalcium Phosphate

Beta-tricalcium phosphate/carboxymethyl chitin composites [TCP/CMCh] of various ratios of TCP granules and CMCh were made and their mechanical properties, handling properties and repair performance for bone defects and for osteochondral defects were investigated. Water pooling ratio of CMCh was approximately 40 times the weight itself. TCP/CMCh of a higher TCP ratio had higher stress at 50%-strain. The stress at 50%-strain of TCP/CMCh with 0, 2.5, 5.0, 7.5, 10 TCP ratios was 0.12, 0.51, 1.08, 1.46, 1.67 (MPa, n=5), respectively. The TCP/CMCh with 5.0 TCP ratios had the best total scores in handling tests. The bone repair rate of TCP/CMCh was TCP ratio 2.5< Blank= TCP ratio 7.5< TCP ratio 5.0. In the implantation test for osteochondral defects, TCP/CMCh was completely absorbed at four weeks after surgery. Regeneration of the articular cartilage was seen with TCP/CMCh and HA/CMCh but not with TCP granules, which remained eight weeks after implantation. The regenerated articular cartilage had remained 32 weeks after implantation. In conclusion, it was demonstrated that this TCP/CMCh composite was a promising material for repairing osteochondral defects.

scholarly journals Extrusion Printed Graphene/Polycaprolactone/Composites for Tissue Engineering

2013 ◽  
Vol 773-774 ◽  
pp. 496-502 ◽  
Author(s):  
Sepidar Sayyar ◽  
Rhys Cornock ◽  
Eoin Murray ◽  
Stephen Beirne ◽  
David L. Officer ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tissue Engineering ◽  
Three Dimensional ◽  
Promising Material ◽  
Additive Fabrication ◽  
Printing System ◽  
Good Biocompatibility ◽  
Covalently Linked ◽  
Extrusion Printing

In this work fibres and complex three-dimensional scaffolds of a covalently linked graphene-polycaprolactone composite were successfully extruded and printed using a melt extrusion printing system. Fibres with varying diameters and morphologies, as well as complex scaffolds were fabricated using an additive fabrication approach and were characterized. It was found that the addition of graphene improves the mechanical properties of the fibres by over 50% and in vitro cytotoxicity tests showed good biocompatibility indicating a promising material for tissue engineering applications.

scholarly journals Nonlocal Coherent Denoising of RF Data for Ultrasound Elastography

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
P. Khavari ◽  
A. Asif ◽  
M. Boily ◽  
H. Rivaz
Keyword(s):  
Mechanical Properties ◽  
Dynamic Programming ◽  
Time Delay ◽  
Ultrasound Elastography ◽  
Speckle Patterns ◽  
Living Tissues ◽  
The Impact ◽  
Suppress Noise ◽  
State Of Art

Ultrasound elastography infers mechanical properties of living tissues from ultrasound radiofrequency (RF) data recorded while the tissues are undergoing deformation. A challenging yet critical step in ultrasound elastography is to estimate the tissue displacement (or, equivalently the time delay estimate) fields from pairs of RF data. The RF data are often corrupted with noise, which causes the displacement estimator to fail in many in vivo experiments. To address this problem, we present a nonlocal, coherent denoising approach based on Bayesian estimation to reduce the impact of noise. Despite incoherent denoising algorithms that smooth the B-mode images, the proposed denoising algorithm is used to suppress noise while maintaining useful information such as speckle patterns. We refer to the proposed approach as COherent Denoising for Elastography (CODE) and evaluate its performance when CODE is used in conjunction with the two state-of-art elastography algorithms, namely: (i) GLobal Ultrasound Elastography (GLUE) and (ii) Dynamic Programming Analytic Minimization elastography (DPAM). Our results show that CODE substantially improves the strain result of both GLUE and DPAM.

scholarly journals Opto-mechanical properties of fibres—1: Optical Anisotropy in stretched nylon 6 fibres

1991 ◽  
Vol 10 (2) ◽  
pp. 83-90 ◽  
Author(s):  
A.A. Hamza ◽  
I.M. Fouda ◽  
K.A. El-Farahaty ◽  
E.A. Seisa
Keyword(s):  
Mechanical Properties ◽  
Optical Anisotropy ◽  
Nylon 6
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