Insights into biogenic and chemical production of inorganic nanomaterials and nanostructures.

Field emission has been known to mankind for more than a century, and extensive research in this field for the last 40–50 years has led to development of exciting applications such as electron sources, miniature x-ray devices, display materials, etc. In the last decade, large-area field emitters were projected as an important material to revolutionize healthcare and medical devices, and space research. With the advent of nanotechnology and advancements related to carbon nanotubes, field emitters are demonstrating highly enhanced performance and novel applications. Next-generation emitters need ultra-high emission current density, high brightness, excellent stability and reproducible performance. Novel design considerations and application of new materials can lead to achievement of these capabilities. This article presents an overview of recent developments in this field and their effects on improved performance of field emitters. These advancements are demonstrated to hold great potential for application in next-generation field emission devices.

https://iopscience.iop.org/article/10.1088/0022-3727/47/32/323001/pdf

Recent progress in nanostructured next-generation field emission devices

Silver nanoparticles form promising template for designing antimicrobial agents against drug resistant pathogenic microorganisms. Thus, the development of a reliable green approach for the synthesis of nanoparticles is an important aspect of current nanotechnology research. In the present investigation, silver nanoparticles synthesized by a soil Bacillus sp. were characterized using UV-vis spectroscopy, FTIR, SEM, and EDS. The antibacterial potential of biosynthesized silver nanoparticles, standard antibiotics, and their conjugates were evaluated against multidrug-resistant biofilm-forming coagulase-negative S. epidermidis strains, S. aureus, Salmonella Typhi, Salmonella Paratyphi, and V. cholerae. Interestingly, silver nanoparticles (AgNPs) showed remarkable antibacterial activity against all the test strains with the highest activity against S. epidermidis strains 145 and 152. In addition, the highest synergistic effect of AgNPs was observed with chloramphenicol against Salmonella typhi. The results of the study clearly indicate the promising biomedical applications of biosynthesized AgNPs.

Antibacterial Activity and Synergistic Effect of Biosynthesized AgNPs with Antibiotics Against Multidrug-Resistant Biofilm-Forming Coagulase-Negative Staphylococci Isolated from Clinical Samples

Multiple antibiotic resistance and diverse mechanisms for biofilm formation make Coagulase Negative Staphylococci (CoNS) to cause infections associated with insertion of medical devices. As the infectious life style of CoNS pose difficult to treat conditions, materials with multitargeted antimicrobial effect can offer promising ways to modify the surface of devices to limit microbial growth. The broad spectrum of antimicrobial properties shown by silver nanoparticles (AgNPs) make it as an excellent candidate to act on device surface as persistent antimicrobial structures. In the current study, AgNPs assembled by soil bacteria under visible light at room temperature were analysed for its physical properties by UV–Vis spectroscopy, FTIR, SEM, HR-TEM and EDS and they also showed significant antimicrobial and antibiofilm properties against selected members of CoNS like Staphylococcus epidermidis and Staphylococcus haemolyticus. Very interestingly, further analysis on antibacterial mechanism of AgNPs showed their remarkable ability to cause disorganization of bacterial cell membrane. Further, surface engineering application of AgNPs on urinary catheter showed its excellent potential to prevent the attachment and colonization of CoNS which make result of study with significantly novel medical applications.

Inhibitory effect of silver nanoparticle fabricated urinary catheter on colonization efficiency of Coagulase Negative Staphylococci

High performance field emission of carbon nanotube film emitters with a triangular shape

Provided are a cooling device coated with carbon nanotubes and method of manufacturing the same. Carbon nanotubes are dispersively coated on a surface of the cooling device that radiates generated by a predetermined apparatus or component through thermal exchange. Thus, a carbon nanotube structure is formed so that the cooling device can improve in a thermal radiation characteristic and become small-sized. As a result, electronic devices can be downscaled and heat generated by a highly integrated electronic circuit chip can be effectively radiated, thus increasing lifetime and performance of an operating circuit.

Cooling device coated with carbon nanotube and method of manufacturing the same

The present invention relates to an apparatus and method for blocking outflow of fluid from a damaged ship. Particularly, the present invention is directed to an apparatus for blocking outflow of fluid from a damaged ship, comprising a contractible and inflatable balloon of which inflation diameter is larger than a maximum diameter of a damaged hull, a conduit consisting of a rigid conduit and a flexible conduit, through which a filler is charged into or discharged from said balloon, wherein said rigid conduit is connected to said balloon and a method for blocking outflow of fluid from a damaged ship.

Apparatus and method for blocking outflow of fluid from a damaged ship

A heat dissipation plate coated with a carbon nano tube and a fabrication method thereof are provided to improve thermal conductivity capability by maximizing a surface area of a heat absorption apparatus for heat dissipation. A heat dissipation plate having a heat dissipation pin is formed. The heat dissipation plate is dipped into a bath including a solvent with dispersed carbon nano tube. A wetting layer is formed on the surface of the heat dissipation pin by taking out the heat dissipation plate in a constant speed. Carbon nano tube is absorbed on the surface of the heat dissipation pin by drying the solvent of the wetting layer.

Cooling device with carbon nanaotube coating and method of forming the same

Provided is a method of forming electron emitter tips for a field emission display device (FED) using copper-carbon nanotube composite electroplating. In the method, a cathode substrate having a surface on which a copper seed layer is defined is provided. The cathode substrate is dipped along with an anode substrate in an electroplating tank that is filled with an electroplating solution containing carbon nanotubes and a copper electrolytic solution. Thereafter, a copper-carbon nanotube composite is electroplated on the cathode substrate by supplying power to the cathode substrate and the anode substrate. By forming the electron emitter tips using the copper-carbon nanotube composite electroplating, an FED having a good adhesion of carbon nanotubes with the substrate can be fabricated. Also, the FED can have high luminance and a long lifetime and consume low power.

Method of forming electron emitter tips using copper-carbon nanotube composite electroplating

PROBLEM TO BE SOLVED: To provide a heat sink coated with carbon nano tubes, and its manufacturing method. SOLUTION: The surface of a heat sink that releases heat generated from a specified container or parts to the outside through heat exchange, is disperse-coated or pattern-coated with carbon nano tubes to form a carbon nano tube structure. Thus, heat releasing characteristics are improved to decrease the size of the heat sink, resulting in allowing smaller electronic elements. By this, the heat radiation problem of a highly integrated electronic circuit chip is solved to improve the life and performance of an operation circuit. COPYRIGHT: (C)2007,JPO&INPIT

Heat sink coated with carbon nano tube, and manufacturing method thereof

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Seung-Min Lee

Author Tools

Chat about Author