Nanopatterned silk fibroin films with high transparency and high haze for optical applications

Malinowski, Corey Bryce; He, Fengjie; Zhao, Yinchang; Chang, Ivan; Hatchett, David W.; Zhai, Shengjie; Zhao, Hui

doi:10.1039/c9ra07391d

Cited by 19 publications

(21 citation statements)

References 54 publications

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“…[ 55–57 ] Due to the high transparency and low thickness of the films, various optical applications can also present opportunities for further investigation. [ 58,59 ]…”

Section: Resultsmentioning

confidence: 99%

Plasma‐Assisted Deposition of Silk Fibroin on Different Surfaces

Arkhangelskiy

Maniglio

Bucciarelli

et al. 2021

Adv Materials Inter

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The development of simple and versatile methods for the deposition of biocompatible coatings to protect or functionalize a range of materials with different shapes is an important challenge. In this study, a versatile, room‐temperature process is presented for the deposition of silk fibroin on different materials viz., glass, polyethylene terephthalate, Ti alloy, and poly(dimethylsiloxane). Coating with thin fibroin films is achieved using an atmospheric plasma torch, wherein a silk‐fibroin aerosol solution is used as the working gas. The method consists of two sequential processes: plasma modification of the surface, followed by plasma‐assisted deposition. This allows enhanced adhesion of the protein to the underlying surfaces, and the deposition even on non‐planar and flexible substrates. The deposited films are characterized by optical microscopy, atomic force microscopy, and scanning electron microscopy. Primary and secondary structures of the surface‐attached fibroin films are investigated by Fourier transform infrared spectroscopy. The proposed approach offers a tunable and controllable strategy for the controlled deposition of proteins on complex surfaces, for a wide range of biomedical and technological applications, including dentistry and bioelectronics.

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“…[ 55–57 ] Due to the high transparency and low thickness of the films, various optical applications can also present opportunities for further investigation. [ 58,59 ]…”

Section: Resultsmentioning

confidence: 99%

Plasma‐Assisted Deposition of Silk Fibroin on Different Surfaces

Arkhangelskiy

Maniglio

Bucciarelli

et al. 2021

Adv Materials Inter

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“…Sericin is the glue-like protein that serves to maintain the shape of the cocoon, while SF is a semicrystalline biopolymer with maximum crystallinity of about 55% ( Huang et al, 2018 ). SF can be extracted from native B. mori silk following a three-step process ( Rockwood et al, 2011 ; Malinowski et al, 2019 ): fiber degumming, fiber dissolution, and solution purification ( Figure 3A ). In the degumming process, sericin are removed from silk fibers by boiling the cocoons in a basic solution.…”

Section: Silk-based Materialsmentioning

confidence: 99%

Section: Silk-based Materialsmentioning

confidence: 99%

Engineering Natural and Recombinant Silks for Sustainable Biodevices

et al. 2022

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Silk fibroin (SF) is a structural protein derived from natural silkworm silks. Materials fabricated based on SF usually inherit extraordinary physical and biological properties, including high mechanical strength, toughness, optical transparency, tailorable biodegradability, and biocompatibility. Therefore, SF has attracted interest in the development of sustainable biodevices, especially for emergent bio-electronic technologies. To expand the function of current silk devices, the SF characteristic sequence has been used to synthesize recombinant silk proteins that benefit from SF and other functional peptides, such as stimuli-responsive elastin peptides. In addition to genetic engineering methods, innovated chemistry modification approaches and improved material processing techniques have also been developed for fabricating advanced silk materials with tailored chemical features and nanostructures. Herein, this review summarizes various methods to synthesize functional silk-based materials from different perspectives. This review also highlights the recent advances in the applications of natural and recombinant silks in tissue regeneration, soft robotics, and biosensors, using B. mori SF and silk-elastin-like proteins (SELPs) as examples.

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“…Regenerated SF not only offers itself as a passive substrate and/or encapsulation layer but it also serves as a dielectric for flexible and wearable electronics 10 . It has been used by researchers as a gate dielectric layer in organic field‐effect transistors and many other optoelectronic devices 6,11–13 . The surface properties of a dielectric layer are important as they allow a conductive channel in the interface between the dielectric layer and semiconductor.…”

Section: Introductionmentioning

confidence: 99%

N‐type silk fibroin/TiO₂ nanocomposite transparent films: electrical and optical properties

Yadav

Batra

Bansal

et al. 2021

Polymer International

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This paper highlights the effect of different concentrations of titanium dioxide (TiO2) nanoparticles on the electrical and optical properties of silk fibroin (SF). TiO2 based SF nanocomposite films were prepared using the solvent casting method. Uniform dispersion and agglomeration of nanoparticles, in nanocomposite films, were observed by field emission SEM. The conductivity of pure SF and nanocomposite films was determined by a four‐point probe and the TiO2 nanoparticles were found to bring high conductivity to the nanocomposite films. Dielectric strength improved with the addition of nanoparticles to the SF matrix. Dielectric constant and capacitance of the pure SF and nanocomposite films were measured using an LCR meter, which showed a 10‐fold enhancement on the addition of nanoparticles in SF. A very unusual property, i.e. negative resistance, was observed during LCR meter analysis for the nanocomposite films for a particular range of frequency (200–550 kHz), voltage (1 V) and current (0.5–1.5 μA). TiO2 nanoparticles changed the semiconducting behavior of the SF films from p‐type to n‐type as measured by the Hall effect experiment. The optical properties of pure SF and nanocomposite films were measured using a UV–visible spectrophotometer. The increased concentration of nanoparticles in the SF has effectively enhanced the absorbing coefficient, refractive index and percentage transmittance and reduced the bandgap energy. These SF/TiO2 nanocomposite films have shown the potential to be used as dielectric and high refractive index material for optoelectronics applications. © 2021 Society of Industrial Chemistry.

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Nanopatterned silk fibroin films with high transparency and high haze for optical applications

Abstract: Nanopatterned silk fibroin-based optical films exhibit both ultrahigh optical transparency and ultrahigh optical transmission haze.

Cited by 19 publications

References 54 publications

Plasma‐Assisted Deposition of Silk Fibroin on Different Surfaces

Plasma‐Assisted Deposition of Silk Fibroin on Different Surfaces

Engineering Natural and Recombinant Silks for Sustainable Biodevices

N‐type silk fibroin/TiO₂ nanocomposite transparent films: electrical and optical properties

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Nanopatterned silk fibroin films with high transparency and high haze for optical applications

Abstract: Nanopatterned silk fibroin-based optical films exhibit both ultrahigh optical transparency and ultrahigh optical transmission haze.

Cited by 19 publications

References 54 publications

Plasma‐Assisted Deposition of Silk Fibroin on Different Surfaces

Plasma‐Assisted Deposition of Silk Fibroin on Different Surfaces

Engineering Natural and Recombinant Silks for Sustainable Biodevices

N‐type silk fibroin/TiO2 nanocomposite transparent films: electrical and optical properties

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Product

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N‐type silk fibroin/TiO₂ nanocomposite transparent films: electrical and optical properties