Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > UCSB researchers show how to make polymeric micro- and nanoparticles

Abstract:
Creating the particles essential to understanding the role of shape in particle function

UCSB researchers show how to make polymeric micro- and nanoparticles

Santa Barbara, CA | Posted on July 9th, 2007

Researchers in the College of Engineering at UC Santa Barbara have discovered how to make polymeric micro- and nanoparticles in a wide variety of different shapes and sizes using commonly-available lab chemicals and equipment. Knowing how to create these particles in the average laboratory environment will facilitate further discovery, as the particles are essential to understanding the role of shape in particle function. Their research is published in today's online edition of the Proceedings of the National Academy of Sciences.

Polymeric micro- and nanoparticles are used in a wide range of applications including medical imaging, drug delivery, and beauty and personal care products. These applications typically use spherical particles. While making particles in other shapes could be extremely useful, fabricating shapes other than spheres has been technically challenging.

The research team, led by Samir Mitragotri, a professor of chemical engineering, with Julie Champion, a graduate student, and Yogesh Katare, a post-doctoral researcher, used spherical polystyrene beads as a starting point. In one approach, the beads were liquefied by heat or solvents and then stretched. In the second, the beads were embedded in a polyvinyl alcohol film and the film was stretched to create voids around the beads. These voids were then filled by liquefying the beads using heat or solvent. From these two simple techniques, more than 20 different shapes were formed, ranging from simple rods and eggs to lenses, diamonds, food-shaped ravioli and tacos.

The methods used to create the potpourri of micro- and nanoparticles allow the researchers to control the size and shape of the particles created, a crucial factor in the development of nonspeherical particles in a variety of fields, including drug delivery, microbiology, advanced materials and rheology. This research was funded by the NIH program of excellence in nanotechnology.

####

For more information, please click here

Contacts:
Barbara Bronson Gray
818.889.5415


Samir Mitragotri
805.893.7532

Copyright © University of California - Santa Barbara

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Nanomedicine

Nanobiotix establishes promising preclinical proof-of-concept in Immuno Oncology May 31st, 2016

Automating DNA origami opens door to many new uses: Like 3-D printing did for larger objects, method makes it easy to build nanoparticles out of DNA May 30th, 2016

Simple attraction: Researchers control protein release from nanoparticles without encapsulation: U of T Engineering discovery stands to improve reliability and fabrication process for treatments to conditions such as spinal cord damage and stroke May 28th, 2016

Scientists illuminate a hidden regulator in gene transcription: New super-resolution technique visualizes important role of short-lived enzyme clusters May 27th, 2016

Discoveries

Fast, stretchy circuits could yield new wave of wearable electronics May 30th, 2016

Automating DNA origami opens door to many new uses: Like 3-D printing did for larger objects, method makes it easy to build nanoparticles out of DNA May 30th, 2016

Simple attraction: Researchers control protein release from nanoparticles without encapsulation: U of T Engineering discovery stands to improve reliability and fabrication process for treatments to conditions such as spinal cord damage and stroke May 28th, 2016

Scientists illuminate a hidden regulator in gene transcription: New super-resolution technique visualizes important role of short-lived enzyme clusters May 27th, 2016

Materials/Metamaterials

Thermal modification of wood and a complex study of its properties by magnetic resonance May 26th, 2016

Finding a new formula for concrete: Researchers look to bones and shells as blueprints for stronger, more durable concrete May 26th, 2016

Revealing the nature of magnetic interactions in manganese oxide: New technique for probing local magnetic interactions confirms 'superexchange' model that explains how the material gets its long-range magnetic order May 25th, 2016

Diamonds closer to becoming ideal semiconductors: Researchers find new method for doping single crystals of diamond May 25th, 2016

Announcements

GLOBALFOUNDRIES to Expand Presence in China with 300mm Fab in Chongqing: Company plans new manufacturing facility and additional design capabilities to serve customers in China May 31st, 2016

Nanobiotix establishes promising preclinical proof-of-concept in Immuno Oncology May 31st, 2016

UK NANOSAFETY GROUP publishes 2nd Edition of guidance to support safe working with nanomaterials May 30th, 2016

Fast, stretchy circuits could yield new wave of wearable electronics May 30th, 2016

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic