Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > New microfluidic approach for the directed assembly of functional materials

An optical micrograph of the microchannel junction with red dye flow-focused in water shows experimental conditions used for nanostructure assembly.
An optical micrograph of the microchannel junction with red dye flow-focused in water shows experimental conditions used for nanostructure assembly.

Abstract:
University of Illinois researchers have developed a new approach with applications in materials development for energy capture and storage and for optoelectronic materials.

New microfluidic approach for the directed assembly of functional materials

Urbana, IL | Posted on October 8th, 2013

According to Charles Schroeder, an assistant professor in the Department of Chemical and Biomolecular Engineering, the results show that peptide precursor materials can be aligned and oriented during their assembly into polypeptides using tailored flows in microfluidic devices.

The research was a collaboration between the labs of Schroeder and William Wilson, a research professor in materials science and engineering and the Frederick Seitz Materials Research Laboratory at Illinois. Their findings were recently published in a paper entitled, "Fluidic-directed assembly of aligned oligopeptides with pi-conjugated cores" in Advanced Materials.

"A grand challenge in the field of materials science is the ability to direct the assembly of advanced materials for desired functionality," says Amanda Marciel, a graduate student in Schroeder's research group. "However, design of new materials is often hindered by our inability to control the structural complexity of synthetic polymers."

"To address the need for controlled processing of functional materials, we developed a microfluidic-based platform to drive the assembly of synthetic oligopeptides," Marciel explained. "Using a microfluidic device, we assembled DFAA and DFAG into one dimensional nanostructures using a planar extensional flow generated in a cross-slot geometry."

The dynamics of the assembly process can be followed in real-time using fluorescence microscopy and spectroscopy.

"The assembled nanostructure is spectrally distinct from the synthetic oligopeptide monomer, which can be used to monitor the dynamics of nanostructure formation," Marciel added. "Using precise hydrodynamic control of the microfluidic platform, the researchers demonstrated the formation of multiple parallel-aligned synthetic oligopeptide nanostructures and their subsequent disassembly. By modulating volumetric flow rates in the device they were able to manipulate the position of the fluid-fluid interface at the microchannel junction.

During this process, nanostructures initially formed at the reactive laminar interface are submerged into the advancing acidic stream, thereby preserving the integrity of the preformed nanostructures while initiating formation of an aligned nanostructure at the new interface position.

Marciel says this research shows that is possible to use microfluidic-based flows to direct the structural assembly of polymers into functional materials.

"Our approach has the potential to enable reproducible and reliable fabrication of advanced materials." Marciel said. "Achieving nanoscale ordering in assembled materials has become the primary focus of recent efforts in the field. These approaches will ultimately lead to desired morphology in functional materials, which will enhance their ability to capture and store energy."

"Our research team is quite interdisciplinary and has a unique range of skills to study materials assembly," Schroeder said. "Our group has extensive experience in the design and fabrication of microfluidic devices and fluorescence imaging of soft materials." The team's ultimate goal is to assemble the organic equivalent of typical semiconducting materials.

"This would open the door to developments of materials with application to photovoltaic devices, solid-state lighting, energy harvesting, and catalytic processes," she said.

In addition to Marciel, Schroeder, and Wilson, the paper's authors included, Melikhan Tanyeri, Brian D. Wall, and John D. Tovar. The team used spectroscopic and analytical tools at the Frederick Seitz Materials Research Lab to conduct its research.

####

For more information, please click here

Contacts:
Charles Schroeder

217-333-3906

Writer:
Sarah Williams
assistant director of communications
Department of Chemical and Biomolecular Engineering
217/244-0541

Copyright © University of Illinois College of Engineering

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 Links

Download paper - “Fluidic-directed assembly of aligned oligopeptides with pi-conjugated cores”:

Related News Press

News and information

Making graphene work for real-world devices: Fundamental research in phonon scattering helps researchers design graphene materials for applications April 24th, 2014

Return on investment for kit and promotion materials April 24th, 2014

Protecting olive oil from counterfeiters April 24th, 2014

NanoSafe, Inc. announces the addition of the Labconco Protector® Glove Box to its NanoSafe Tested™ registry April 23rd, 2014

Study finds long-term survival of human neural stem cells transplanted into primate brain April 23rd, 2014

Microfluidics/Nanofluidics

Characterizing inkjet inks: Malvern Instruments presents new rheological research April 23rd, 2014

Imaging

Guo Lab Shows Potential of RNA as Heat-resistant Polymer Material for Nanoarchitectures April 23rd, 2014

Berkeley Lab Researchers Demonstrate First Size-based Chromatography Technique for the Study of Living Cells April 22nd, 2014

MRI, on a molecular scale: Researchers develop system that could one day peer into the atomic structure of individual molecules April 20th, 2014

Oxford Instruments Asylum Research Introduces the MFP-3D InfinityTM AFM Featuring Powerful New Capabilities and Stunning High Performance April 18th, 2014

More effective kidney stone treatment, from the macroscopic to the nanoscale April 17th, 2014

Display technology/LEDs/SS Lighting/OLEDs

Progress made in developing nanoscale electronics: New research directs charges through single molecules April 21st, 2014

Discoveries

Making graphene work for real-world devices: Fundamental research in phonon scattering helps researchers design graphene materials for applications April 24th, 2014

Return on investment for kit and promotion materials April 24th, 2014

Protecting olive oil from counterfeiters April 24th, 2014

High-Performance, Low-Cost Ultracapacitors Built with Graphene and Carbon Nanotubes: Future devices based on technology could bridge gap between batteries and conventional capacitors in portable electronics and hybrid electric vehicles April 23rd, 2014

Materials/Metamaterials

Guo Lab Shows Potential of RNA as Heat-resistant Polymer Material for Nanoarchitectures April 23rd, 2014

Nanomaterial Outsmarts Ions April 22nd, 2014

Thinnest feasible membrane produced April 17th, 2014

INSCX™ exchange to present Exchange trade reporting mechanism for engineered nanomaterials (NMs) to UK regulation agencies, insurers and upstream/downstream users April 17th, 2014

Announcements

Making graphene work for real-world devices: Fundamental research in phonon scattering helps researchers design graphene materials for applications April 24th, 2014

Return on investment for kit and promotion materials April 24th, 2014

Protecting olive oil from counterfeiters April 24th, 2014

High-Performance, Low-Cost Ultracapacitors Built with Graphene and Carbon Nanotubes: Future devices based on technology could bridge gap between batteries and conventional capacitors in portable electronics and hybrid electric vehicles April 23rd, 2014

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals

Making graphene work for real-world devices: Fundamental research in phonon scattering helps researchers design graphene materials for applications April 24th, 2014

Return on investment for kit and promotion materials April 24th, 2014

Protecting olive oil from counterfeiters April 24th, 2014

High-Performance, Low-Cost Ultracapacitors Built with Graphene and Carbon Nanotubes: Future devices based on technology could bridge gap between batteries and conventional capacitors in portable electronics and hybrid electric vehicles April 23rd, 2014

Energy

Making graphene work for real-world devices: Fundamental research in phonon scattering helps researchers design graphene materials for applications April 24th, 2014

Atomic switcheroo explains origins of thin-film solar cell mystery April 23rd, 2014

Like a hall of mirrors, nanostructures trap photons inside ultrathin solar cells April 22nd, 2014

Global leader in solar cell manufacturing eyes New York for major expansion outside of Japan: CNSE and Solar Frontier Explore $700 Million Investment, Job Creation in New York State April 22nd, 2014

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics

High-Performance, Low-Cost Ultracapacitors Built with Graphene and Carbon Nanotubes: Future devices based on technology could bridge gap between batteries and conventional capacitors in portable electronics and hybrid electric vehicles April 23rd, 2014

Transparent Conductive Films and Sensors Are Hot Segments in Printed Electronics: Start-ups in these fields show above-average momentum, while companies working on emissive displays such as OLED are fading, Lux Research says April 17th, 2014

Relieving electric vehicle range anxiety with improved batteries: Lithium-sulfur batteries last longer with nanomaterial-packed cathode April 16th, 2014

Catching the (Invisible) Wave: UC Santa Barbara researchers create a unique semiconductor that manipulates light in the invisible infrared/terahertz range, paving the way for new and enhanced applications April 11th, 2014

Photonics/Optics/Lasers

Making graphene work for real-world devices: Fundamental research in phonon scattering helps researchers design graphene materials for applications April 24th, 2014

Return on investment for kit and promotion materials April 24th, 2014

High-temperature plasmonics eyed for solar, computer innovation April 17th, 2014

Scientists Capture Ultrafast Snapshots of Light-Driven Superconductivity: X-rays reveal how rapidly vanishing 'charge stripes' may be behind laser-induced high-temperature superconductivity April 16th, 2014

Solar/Photovoltaic

Making graphene work for real-world devices: Fundamental research in phonon scattering helps researchers design graphene materials for applications April 24th, 2014

Atomic switcheroo explains origins of thin-film solar cell mystery April 23rd, 2014

Like a hall of mirrors, nanostructures trap photons inside ultrathin solar cells April 22nd, 2014

Global leader in solar cell manufacturing eyes New York for major expansion outside of Japan: CNSE and Solar Frontier Explore $700 Million Investment, Job Creation in New York State April 22nd, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE