Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > R&D Profile: New Routes to Gels and Glasses, or How to Apply Analogies between Soft Matter Physics and Food Systems: A. Stradner, University of Fribou

Solid-like materials can be obtained via a variety of different arrest mechanisms. In the case of medium strength attractive particles, gels can form via an arrested spinodal decomposition process.
Solid-like materials can be obtained via a variety of different arrest mechanisms. In the case of medium strength attractive particles, gels can form via an arrested spinodal decomposition process.

Abstract:
We believe that nanotechnology can make important contributions to food sciences and technology in several areas.

R&D Profile Courtesy of Anna Stradner, Adolphe Merkle Institute, University of Fribourg, Switzerland

Dr. Stradner is a featured speaker at next month's NSTI Nanotech conference.

R&D Profile: New Routes to Gels and Glasses, or How to Apply Analogies between Soft Matter Physics and Food Systems: A. Stradner, University of Fribou

Boston, MA | Posted on May 22nd, 2008

Gels and glasses represent classes of non-equilibrium solids that play an important role in various food and materials science applications (1). In addition, they have attracted the attention of experimentalists and theoreticians in modern soft condensed matter physics. This has already resulted in a much better understanding of phenomena centered around liquid-solid transitions encountered in colloidal model suspensions (2, 3). However, experimental investigations in systems with industrial relevance are often hampered by problems such as high turbidity, complex time dependence, and the non-ergodicity of the resulting solid-like samples. Here we show that the application of novel developments in instrumentation for the investigation of dense and strongly attracting colloidal suspensions yields improved insight into the behavior and properties of food related mixtures (4, 5). Moreover, we develop new concepts for the understanding of non-equilibrium solid states in food colloid - biopolymer mixtures in the region of the state diagram, where liquid-liquid phase separation competes with dynamical arrest. This interplay and the possibility to modify it by playing with interparticle interaction strength and range lead to interesting phenomena and - once fully understood - will provide a tool kit to produce food gels with tailored structural and mechanical properties.

This study has to be seen in a larger context. We believe that nanotechnology can make important contributions to food sciences and technology mainly in three areas, which represent the focus of our nanotechnology-based food research: (1) Utilizing concepts from colloid physics to create self-assembled food systems with novel properties: The issue of non-equilibrium solid-like properties is of outstanding importance for food processing as well as the final food products. Only improved understanding of the mechanisms involved will allow controlling and tuning the structural, optical and mechanical properties. (2) The application of novel methods and instrumentation originally developed in nanomaterials science and soft matter physics: Experimental studies of food systems often require us to cover an extremely large range of length and time scales. We thus put a major effort into the development of new experimental tools that allow us to investigate equilibrium and non-equilibrium properties of these systems. (3) The development of nanocomposite-based packaging materials: Here we synthesize and study functionalized synthetic colloidal particles in order to create advanced composite materials for food packaging with optimized safety and shelf life properties.

1. R. Mezzenga, P. Schurtenberger, A. Burbidge, and M. Michel, Nature Materials, 2005, 4, 729.
2. V. Trappe and P. Sandkühler, Curr. Opin. Colloid Int. Sci., 2004, 8, 494-500.
3. F. Cardinaux, T. Gibaud, A. Stradner, P. Schurtenberger, PRL, 2007, 99, 118301.
4. S.K. Bhat, R. Tuinier, P. Schurtenberger, J. Phys.: Condens. Matter, 2006, 18, L339-L346
5. S.K. Bhat, M. Michel, A. Stradner, P. Schurtenberger, to be submitted to Soft Matter

####

About NSTI
The Nano Science and Technology Institute (NSTI) is chartered with the promotion and integration of nano and other advanced technologies through education, technology and business development. NSTI accomplishes this mission through its offerings of continuing education programs, scientific and business publishing and community outreach. NSTI produces the annual Nanotech conference and trade show, the most comprehensive international nanotechnology convention in the world. NSTI also produces the semi-annual Nanotech Venture, Nanotech Industrial Impact Workshop, Nano Impact Summit and the Nanotech Course Series in the US and Europe. NSTI was founded in 1997 as a result of the merger between various scientific societies, and is headquartered in Cambridge, Massachusetts with additional offices in California and Switzerland.

For more information, please click here

Contacts:
Sarah Wenning
696 San Ramon Valley Blvd., Ste. 423
Danville, CA 94526
Ph: (925) 901-4959
Fax: (925) 886-8461

Copyright © NSTI

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

News and information

Virginia Tech physicists propose path to faster, more flexible robots: Virginia Tech physicists revealed a microscopic phenomenon that could greatly improve the performance of soft devices, such as agile flexible robots or microscopic capsules for drug delivery May 17th, 2024

Gene therapy relieves back pain, repairs damaged disc in mice: Study suggests nanocarriers loaded with DNA could replace opioids May 17th, 2024

Shedding light on perovskite hydrides using a new deposition technique: Researchers develop a methodology to grow single-crystal perovskite hydrides, enabling accurate hydride conductivity measurements May 17th, 2024

Physics

Finding quantum order in chaos May 17th, 2024

International research team uses wavefunction matching to solve quantum many-body problems: New approach makes calculations with realistic interactions possible May 17th, 2024

Announcements

Virginia Tech physicists propose path to faster, more flexible robots: Virginia Tech physicists revealed a microscopic phenomenon that could greatly improve the performance of soft devices, such as agile flexible robots or microscopic capsules for drug delivery May 17th, 2024

Diamond glitter: A play of colors with artificial DNA crystals May 17th, 2024

Finding quantum order in chaos May 17th, 2024

Oscillating paramagnetic Meissner effect and Berezinskii-Kosterlitz-Thouless transition in cuprate superconductor May 17th, 2024

Food/Agriculture/Supplements

$900,000 awarded to optimize graphene energy harvesting devices: The WoodNext Foundation's commitment to U of A physicist Paul Thibado will be used to develop sensor systems compatible with six different power sources January 12th, 2024

Silver nanoparticles: guaranteeing antimicrobial safe-tea November 17th, 2023

Night-time radiative warming using the atmosphere November 17th, 2023

DGIST and New Life Group launched a research project on "Functional beauty and health products using the latest nanotechnology" May 12th, 2023

Events/Classes

Researchers demonstrate co-propagation of quantum and classical signals: Study shows that quantum encryption can be implemented in existing fiber networks January 20th, 2023

CEA & Partners Present ‘Powerful Step Towards Industrialization’ Of Linear Si Quantum Dot Arrays Using FDSOI Material at VLSI Symposium: Invited paper reports 3-step characterization chain and resulting methodologies and metrics that accelerate learning, provide data on device pe June 17th, 2022

June Conference in Grenoble, France, to Explore Pathways to 6G Applications, Including ‘Internet of Senses’, Sustainability, Extended Reality & Digital Twin of Physical World: Organized by CEA-Leti, the Joint EuCNC and 6G Summit Sees Telecom Sector as an ‘Enabler for a Sustainabl June 1st, 2022

How a physicist aims to reduce the noise in quantum computing: NAU assistant professor Ryan Behunin received an NSF CAREER grant to study how to reduce the noise produced in the process of quantum computing, which will make it better and more practical April 1st, 2022

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




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project