Quantitative analysis of infrared absorption coefficient of spider silk fibers

2011 ◽  
Vol 57 (2) ◽  
pp. 207-212 ◽  
Author(s):  
Roxana Ene ◽  
Periklis Papadopoulos ◽  
Friedrich Kremer
Keyword(s):  
Quantitative Analysis ◽  
Absorption Coefficient ◽  
Infrared Absorption ◽  
Spider Silk ◽  
Silk Fibers

High‐toughness Spider Silk Fibers Spun from Soluble Recombinant Silk Produced in Mammalian Cells

2003 ◽  
Author(s):  
Costas N. Karatzas ◽  
Nathalie Chretien ◽  
François Duguay ◽  
Annie Bellemare ◽  
Jiang Feng Zhou ◽  
...  
Keyword(s):  
Mammalian Cells ◽  
Spider Silk ◽  
Silk Fibers ◽  
High Toughness

scholarly journals Nephila clavipes Flagelliform Silk-Like GGX Motifs Contribute to Extensibility and Spacer Motifs Contribute to Strength in Synthetic Spider Silk Fibers

2013 ◽  
Vol 14 (6) ◽  
pp. 1751-1760 ◽  
Author(s):  
Sherry L. Adrianos ◽  
Florence Teulé ◽  
Michael B. Hinman ◽  
Justin A. Jones ◽  
Warner S. Weber ◽  
...  
Keyword(s):  
Spider Silk ◽  
Nephila Clavipes ◽  
Silk Fibers

Light-induced absorption and optical damage in Sc-, Mg-, and Zn-doped near-stoichiometric LiNbO3

2018 ◽  
Vol 27 (03) ◽  
pp. 1850030 ◽  
Author(s):  
Junsheng Li ◽  
Youwen Liu ◽  
Huijie Zhang ◽  
Liangzun Tang ◽  
Chongjun He
Keyword(s):  
Steady State ◽  
Lithium Niobate ◽  
Absorption Coefficient ◽  
Ultraviolet Light ◽  
Infrared Absorption ◽  
Doping Level ◽  
Doping Concentration ◽  
Weak Absorption ◽  
Induced Absorption ◽  
Infrared Absorption Spectra

By measuring the ultraviolet-light-induced absorption in Sc-, Mg- and Zn-doped near-stoichiometric lithium niobate (LiNbO[Formula: see text], we find that the steady-state ultraviolet-light-induced absorption coefficient changes with respect to the doping concentration. There is a strong ultraviolet-light-induced absorption when doping concentration is below its photorefractive threshold and a really weak absorption when the crystal is highly doped. We also use OH[Formula: see text] infrared absorption spectra and the transmitted light spot distortion method to verify the result. Thus, we can determine if the doping level in these doped near-stoichiometric LiNbO3 crystals is above or below their photorefractive threshold by measuring the ultraviolet-light-induced absorption.

Tough synthetic spider-silk fibers obtained by titanium dioxide incorporation and formaldehyde cross-linking in a simple wet-spinning process

Biochimie ◽  
2020 ◽  
Vol 175 ◽  
pp. 77-84
Author(s):  
Hongnian Zhu ◽  
Yuan Sun ◽  
Tuo Yi ◽  
Suyang Wang ◽  
Junpeng Mi ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Spider Silk ◽  
Wet Spinning ◽  
Cross Linking ◽  
Silk Fibers ◽  
Spinning Process

scholarly journals Properties of Biomimetic Artificial Spider Silk Fibers Tuned by PostSpin Bath Incubation

Molecules ◽  
2020 ◽  
Vol 25 (14) ◽  
pp. 3248
Author(s):  
Gabriele Greco ◽  
Juanita Francis ◽  
Tina Arndt ◽  
Benjamin Schmuck ◽  
Fredrik G. Bäcklund ◽  
...  
Keyword(s):  
Spider Silk ◽  
Molecular Mechanisms ◽  
Efficient Production ◽  
Fiber Morphology ◽  
Silk Proteins ◽  
Silk Fibers ◽  
Aqueous Environments ◽  
Natural Counterpart ◽  
Phosphate Buffered Saline ◽  
Β Sheet

Efficient production of artificial spider silk fibers with properties that match its natural counterpart has still not been achieved. Recently, a biomimetic process for spinning recombinant spider silk proteins (spidroins) was presented, in which important molecular mechanisms involved in native spider silk spinning were recapitulated. However, drawbacks of these fibers included inferior mechanical properties and problems with low resistance to aqueous environments. In this work, we show that ≥5 h incubation of the fibers, in a collection bath of 500 mM NaAc and 200 mM NaCl, at pH 5 results in fibers that do not dissolve in water or phosphate buffered saline, which implies that the fibers can be used for applications that involve wet/humid conditions. Furthermore, incubation in the collection bath improved the strain at break and was associated with increased β-sheet content, but did not affect the fiber morphology. In summary, we present a simple way to improve artificial spider silk fiber strain at break and resistance to aqueous solvents.

A quantitative analysis of the supercontraction-induced molecular disorientation of major ampullate spider silk

2017 ◽  
Vol 19 (46) ◽  
pp. 31487-31498 ◽  
Author(s):  
J. Dionne ◽  
T. Lefèvre ◽  
P. Bilodeau ◽  
M. Lamarre ◽  
M. Auger
Keyword(s):  
Quantitative Analysis ◽  
Spider Silk ◽  
Structural Changes

Quantitative analysis of the molecular disorientation and structural changes of major ampullate spider silk upon water-induced supercontraction.

scholarly journals Hybrid Spider Silk with Inorganic Nanomaterials

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1853
Author(s):  
Aleksandra P. Kiseleva ◽  
Grigorii O. Kiselev ◽  
Valeria O. Nikolaeva ◽  
Gulaim Seisenbaeva ◽  
Vadim Kessler ◽  
...  
Keyword(s):  
Hybrid Materials ◽  
High Performance ◽  
Spider Silk ◽  
Inorganic Compounds ◽  
Silk Fibers ◽  
Surface Areas ◽  
Macro Scale ◽  
Performance Functional ◽  
Inorganic Nanomaterials ◽  
Functional Components

High-performance functional biomaterials are becoming increasingly requested. Numerous natural and artificial polymers have already demonstrated their ability to serve as a basis for bio-composites. Spider silk offers a unique combination of desirable aspects such as biocompatibility, extraordinary mechanical properties, and tunable biodegradability, which are superior to those of most natural and engineered materials. Modifying spider silk with various inorganic nanomaterials with specific properties has led to the development of the hybrid materials with improved functionality. The purpose of using these inorganic nanomaterials is primarily due to their chemical nature, enhanced by large surface areas and quantum size phenomena. Functional properties of nanoparticles can be implemented to macro-scale components to produce silk-based hybrid materials, while spider silk fibers can serve as a matrix to combine the benefits of the functional components. Therefore, it is not surprising that hybrid materials based on spider silk and inorganic nanomaterials are considered extremely promising for potentially attractive applications in various fields, from optics and photonics to tissue regeneration. This review summarizes and discusses evidence of the use of various kinds of inorganic compounds in spider silk modification intended for a multitude of applications. It also provides an insight into approaches for obtaining hybrid silk-based materials via 3D printing.

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