Biotech Articles
Publish Your Research Online
Get Recognition - International Audience

Request for an Author Account   |   Login   |   Submit Article
 
 
HOME FAQ TOP AUTHORS FORUMS PUBLISH ARTICLE
 
 

Fungi as Builders For Nanomaterials

BY: Rajni Singh | Category: Nanotechnology | Submitted: 2012-08-01 06:13:57
       No Photo
Article Summary: "An important challenge in nanotechnology is to tailor optical, electric and electronic properties of nanoparticles by controlling the size and shape. Utilization of microbe for synthesis of nanoparticles with different chemical composition, size/shapes and controlled monodispersity to develop environmental friendly nanoparticle.."


Share with Facebook Share with Linkedin Share with Twitter Share with Pinterest Email this article
     


Nanotechnology is the creation of useful materials, devices and systems through the manipulation of such miniscule matter. When the size of the material is reduced to less than 100 nanometers, the realm of quantum physics takes over and materials begin to demonstrate entirely new properties. At this extremely small size, the electrons of the atoms will stay on the surface of the atom instead of orbiting inside it and show unusual physicochemical and optoelectronic properties.

An important challenge in nanotechnology is to tailor optical, electric and electronic properties of nanoparticles by controlling the size and shape. Currently, there is a growing need to develop environmentally benign nanoparticle synthesis processes that do not use toxic chemicals in the synthesis protocol. Utilization of microbe for intracellular/extracellular synthesis of nanoparticles with different chemical composition, size/shapes and controlled monodispersity can be a novel, economically viable and eco-friendly strategy that can reduce toxic chemicals in the conventional protocol. Many microbes produce inorganic substances of interest e.g. silica from diatoms while other microbes formulate nanoscale magnetic particles out of iron oxides. Some microbes consume metals and then excrete them in precise configurations.

A number of different genera of fungi have been investigated and are extremely good candidates in the synthesis of metal and metal sulphide nanoparticles. Verticillium sp. and Fusarium oxysporum, when exposed to aqueous gold and silver ions can reduce the metal ions fairly rapidly. The Verticillium can be induced to fabricate silver nanoparticles within its cells when it's placed in a silver nitrate solution. Extremophilic actinomycete, Thermomonospora sp. is able to produce extracellular gold nanocrystals.

Fungi can be used as builders for nanomaterials as nanotechnology can work with nature to produce fascinating and potentially useful structures. Fungus filaments can also act as living template. As a filament of fungus grows, gold nanoparticles attach to its surface creating additional layers of particles of different sizes or materials.

The gold-plating of their hyphae fungi does not impede the growth of the fungi so long as they continue to receive suitable nutrients. By changing the medium and using gold nanoparticles of a different size, the resulting tubes can be grown with different coatings from one section to the next. This fascilitate the use of microorganisms as living templates or biological slaves to generate macroscopic architectures with strict control over the microscopic and nanoscopic dimensions of the resulting materials. Hence this approach can be used to build high surface area materials with catalytic properties that derive from the choice and spatial distribution of the nanoparticle building blocks arranged on the fungal living templates. Studies demonstrated that silver ions may be reduced extracellularly using Fusarium oxysporum to generate stable gold or silver nanoparticles in water. Aspergillus niger in the presence of 13-nm-wide gold particles that aggregated on the fibrous hyphae. Other fungus-based nanostructures might serve as designer optical, electronic, and magnetic materials.


About Author / Additional Info:


Search this site & forums
Share this article with friends:



Share with Facebook Share with Linkedin Share with Twitter Share with Pinterest Email this article

More Social Bookmarks (Digg etc..)


Comments on this article: (0 comments so far)

Comment By Comment

Leave a Comment   |   Article Views: 3614



Additional Articles:

•   New Dimension of Scope and Career in Microbiology

•   Microbiological Testing and Evaluation

•   Capacity Building for Management of Human-Wildlife Conflict

•   Xanthan Gum - Bioindustrial Viewpoint and Applications




Latest Articles in "Nanotechnology" category:
•   Nanoparticles For Human Health

•   Application of Nanotechnology in Medicine

•   Nanosensors For Security Benefits

•   Silver Nanoparticles Elevates Wound Healing

•   Nanoparticles in Medical Science: Properties and Various Applications

•   Nanotechnology Applications in Medicine, Food Industry and Agriculture

•   COMPUTATIONAL NANOTECHNOLOGY: Its Goal, Approach, Role and Scope

•   Fullerene: Its Definition, Types and Scope

•   Nanophotonics: A Branch of Optical Engineering

•   Nano-biotechnology: A Branch of Nanotechnology

•   Nanotechnology as Applied to Biosciences

•   Respirocytes - A Prognosis From Nanomedicine

•   Biosynthesis of Silver and Gold Nanoparticles

•   DNA Nanotechnology: History and Applications

•   Nanotoxicology: Study of Toxicity of Nanomaterials

•   Nano-Circuits: Composition and its Numerous Approaches

•   Nanomedicine: Its Introduction and Applications

•   Green Nanotechnology: Its Definition, Introduction and Goals

•   Nanostructure: Its Introduction and Various Forms



Important Disclaimer: All articles on this website are for general information only and is not a professional or experts advice. We do not own any responsibility for correctness or authenticity of the information presented in this article, or any loss or injury resulting from it. We do not endorse these articles, we are neither affiliated with the authors of these articles nor responsible for their content. Please see our disclaimer section for complete terms.
Page copy protected against web site content infringement by Copyscape
Copyright © 2010 biotecharticles.com - Do not copy articles from this website.

ARTICLE CATEGORIES :
Agriculture Bioinformatics Applications Biotech Products Biotech Research
Biology Careers College/Edu DNA Environmental Biotech
Genetics Healthcare Industry News Issues Nanotechnology
Others Stem Cells Press Release Toxicology  


  |   Disclaimer/Privacy/TOS   |   Submission Guidelines   |   Contact Us