Microfluidic devices with gold thin film channels for chemical and biomedical applications: a review

Toudeshkchoui, Mahtab Ghasemi; Rabiee, Navid; Rabiee, Mohammad; Bagherzadeh, Mojtaba; Tahriri, Mohammadreza; Tayebi, Lobat; Hamblin, Michael R.

doi:10.1007/s10544-019-0439-0

Cited by 26 publications

(8 citation statements)

References 153 publications

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“…Interestingly, several reports show the high antimicrobial activity of Ag NPs with smaller sizes. These NPs can disrupt the bacterial cell membrane, affecting cell penetration and causing toxicity [ 36 , 37 , 38 , 39 ]. The antibiofilm activity of Ag NPs has been also shown in several studies.…”

Section: Introductionmentioning

confidence: 99%

Silver and Gold Nanoparticles for Antimicrobial Purposes against Multi-Drug Resistance Bacteria

et al. 2022

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Several pieces of research have been done on transition metal nanoparticles and their nanocomplexes as research on their physical and chemical properties and their relationship to biological features are of great importance. Among all their biological properties, the antibacterial and antimicrobial are especially important due to their high use for human needs. In this article, we will discuss the different synthesis and modification methods of silver (Ag) and gold (Au) nanoparticles and their physicochemical properties. We will also review some state-of-art studies and find the best relationship between the nanoparticles’ physicochemical properties and potential antimicrobial activity. The possible antimicrobial mechanism of these types of nanoparticles will be discussed in-depth as well.

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Section: Introductionmentioning

confidence: 99%

Silver and Gold Nanoparticles for Antimicrobial Purposes against Multi-Drug Resistance Bacteria

et al. 2022

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“…[5][6][7] Recent progress in biotherapy and biomaterials provide different approaches for designing scaffolds for TE, including hydrogels, nanofibers, metallic nanoparticles, injectable gels, dendrimers, and liposomes, as indicated in Figure 2. [8][9][10][11][12][13][14][15][16] Recently, ECM has been demonstrated to play a significant role in heart homeostasis via providing structure maintenance, transmitting essential signals to cardiac cells, surrounding cells, and vascular cells. Many cardiovascular problems and heart failures are associated with expansive remodeling of the pathological of the ECM in the myocardium.…”

Section: Introductionmentioning

confidence: 99%

Biodegradable functional macromolecules as promising scaffolds for cardiac tissue engineering

Saghebasl

Akbarzadeh

Gorabi

et al. 2022

Polymers for Advanced Techs

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Cardiovascular diseases, the major international health problem and the leading cause of death worldwide have been increasing in recent years due to population aging and lifestyle changes. Loss of cardiac muscle function after myocardial damage is one of the most critical challenges in cardiovascular medicine that has not yet been overcome. Tissue engineering (TE) has emerged as a promising therapeutic approach in modern medicine, targeting the substitution of damaged tissue with functional tissue grown inside an artificial scaffold. Great efforts have been made toward the construction of tissue engineering scaffolds that paved the way for extracellular matrix (ECM)-like biomaterial. In cardiac tissue engineering, key parameters must be determined to select the ideal biomaterial, such as biocompatibility, conductivity, mechanical features, degradation and swelling rate, surface properties, and cell viability, growth and proliferation. Among different scaffolding materials, a wide range of natural biological macromolecules and synthetic macromolecules have been utilized to produce scaffolds with multifunctionality for cardiac tissue engineering (CTE). In this review, we have focused on recent achievements in the field of synthetic biodegradable macromolecules (such as aliphatic polyesters, polyurethane, poly (glycerol sebacate)) and the significant strategies to construct electrically conductive scaffolds to regenerate the function of native cardiac tissue. These biodegradable macromolecules have several attractive properties, including biocompatibility, elasticity, good mechanical properties, compatibility with native cardiac tissue, and proper surface biochemistry to increase cardiac cell adhesion, making them appropriate candidates for CTE. Recently, a growing trend in the use of conductive scaffolds for cardiac regeneration has been witnessed. Different materials ranging from metals, ceramics, and polymers have been used as parts of conductive scaffolds for CTE, possessing conductivity assortments from a range of semiconductive to conductive. Moreover, this review paper also focuses on the main strategies to create electroconductive scaffolds for in vitro cardiac muscle regeneration.

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“…Gold (Au) is a material of great technological significance due to its interesting associated properties, for example high electrical conductivity, chemical inertness, good stability and biocompatibility [ 1 , 2 ]. Crystalline Au thin films and nanoparticles with low defect densities offer potential applications especially in microfluidic devices [ 3 ]; electrochemical sensing [ 4 ]; biochemical sensing [ 5 ]; and as transparent conductors [ 6 ]. Such applications require higher electrical conductivity which is sensitive to any change in size and distribution of grains in Au thin films.…”

Section: Introductionmentioning

confidence: 99%

Femtosecond Laser Assisted Crystallization of Gold Thin Films

et al. 2021

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We propose a novel low temperature annealing method for selective crystallization of gold thin films. Our method is based on a non-melt process using highly overlapped ultrashort laser pulses at a fluence below the damage threshold. Three different wavelengths of a femtosecond laser with the fundamental (1030 nm), second (515 nm) and third (343 nm) harmonic are used to crystallize 18-nm and 39-nm thick room temperature deposited gold thin films on a quartz substrate. Comparison of laser wavelengths confirms that improvements in electrical conductivity up to 40% are achievable for 18-nm gold film when treated with the 515-nm laser, and the 343-nm laser was found to be more effective in crystallizing 39-nm gold films with 29% improvement in the crystallinity. A two-temperature model provides an insight into ultrashort laser interactions with gold thin films and predicts that applied fluence was insufficient to cause melting of gold films. The simulation results suggest that non-equilibrium energy transfer between electrons and lattice leads to a solid-state and melt-free crystallization process. The proposed low fluence femtosecond laser processing method offers a possible solution for a melt-free thin film crystallization for wide industrial applications.

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Microfluidic devices with gold thin film channels for chemical and biomedical applications: a review

Cited by 26 publications

References 153 publications

Silver and Gold Nanoparticles for Antimicrobial Purposes against Multi-Drug Resistance Bacteria

Silver and Gold Nanoparticles for Antimicrobial Purposes against Multi-Drug Resistance Bacteria

Biodegradable functional macromolecules as promising scaffolds for cardiac tissue engineering

Femtosecond Laser Assisted Crystallization of Gold Thin Films

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