Navigation Links
New Technique For Science Experiments

National Institute of Standards and Technology (NIST) researchers have demonstrated a new technique that can produce a number of complex surfaces, which vary in a controlled fashion across a test strip. //

The new technique is so flexible that it can be applied to surface science experiments ranging from developing better paints to exploring the bonding of proteins to cell membranes.

So-called "gradient composition surfaces"--their chemical composition changes gradually across the surface--have been shown to be powerful research tools for rapid, high-throughput testing of complicated surface properties, but they can be tricky to build. The new NIST technique described in a recent paper in Advanced Materials* coats a silicon wafer with a brush-like copolymer surface, varying the relative concentration of two components, or monomers, of the polymer along the length of the substrate. The dense polymer brush provides a controlled interaction surface at the top while effectively masking the underlying substrate.

The heart of the NIST technique is a combined microfluidic mixer and reaction chamber. The two components are injected into the mixer with gradually changing flow rates and mix thoroughly before filling a thin reaction chamber holding the silicon wafer substrate. Once the solution leaves the mixing region, the narrow dimensions of the reaction chamber inhibit further mixing, so the varying composition ratios through the chamber remain stable while the solution polymerizes on the substrate.

Because it keeps the fluid mixture concentrations stable for long periods, the new technique is unique in its ability to accommodate a wide variety of materials, potentially producing test surfaces for studying surface phenomena ranging from nanoscale interactions of biomolecules--critical for improving the performance of tissue-engineered medical products or for identifying the fundamental mechanisms key to cell/surface adhe sion--to the performance of new products like paints or adhesives. The specific polymer used in these proof-of-concept experiments, for example, is typical of a temperature- or acidity-sensitive polymer that might be used in a drug delivery system.

Contact: Mark Bello
mark.bello@nist.gov
301-975-3776
National Institute of Standards and Technology (NIST)

(Source: Eurekalert)
'"/>




Related medicine news :

1. New Laser Techniques cure degeneration of the eye
2. New Technique to Study Infants Brain.
3. New Technique For Benign Breast Tumors
4. Preventing Strokes Using Less Invasive Techniques
5. New Technique To Detect Activity Of Drugs In The Body
6. New Technique To Test Stem Cells That Heal The Heart
7. A New Technique For Prediction Of Adult Height
8. Novel Technique For Targeting Small-Cell Lung Cancer
9. Novel Technique For Management Of Inverted Papilloma Of Frontal Sinus
10. New Cardiac Angiography Technique For Improved Imaging Of Coronary Veins
11. New Technique Enables Better Nursing Of Robin Sequence Infants
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/20/2017)... FL (PRWEB) , ... January 20, 2017 , ... ... and wellness products to enhance people’s everyday lives, recently attended the January ECRM ... buyers. , ATP Science is known for its large range of supplements that ...
(Date:1/20/2017)... California (PRWEB) , ... January 20, 2017 , ... "TransFlare ... to use inside of Final Cut Pro X," said Christina Austin - CEO of ... the RED Dragon. Utilizing the Dragon Sensor,TransFlare 4K Mystique lens flare and light leak ...
(Date:1/20/2017)... ... January 20, 2017 , ... “The Angel”: a heartwarming and ... out for each of his children. “The Angel” is the creation of published author, ... New York City, and impassioned writer. , When asked of her new book, Marjorie ...
(Date:1/20/2017)... ... January 20, 2017 , ... ... Oscillating Positive Expiratory Pressure (OPEP) device, was featured in a study indicating superior ... MEd, RRT-ACCS, FAARC, “Analysis of Three Oscillating Positive Expiratory Pressure Devices During ...
(Date:1/20/2017)... ... January 20, 2017 , ... “Knowledge is God’s Lighthouse”: ... faith. “Knowledge is God’s Lighthouse” is the creation of published author, Gene Gaapf, a ... poetry collections. , “I have been writing since high school and have many ...
Breaking Medicine News(10 mins):
(Date:1/20/2017)... -- Entscheidung fällt als Reaktion ... Die internationale humanitäre Stadt soll um knapp 2800 m² erweitert ... Seine Hoheit Scheich Muhammad bin Raschid Al ... Dubai , hat den Auftrag erteilt, ... City IHC) zu verdreifachen, um den Betrieb zur Unterstützung ...
(Date:1/19/2017)... -- The Global Therapy Partnering Terms and Agreements since ... and agreements entered into by the world,s leading healthcare ... deals by value - Deals listed by company A-Z, ... report provides understanding and access to the partnering deals ... companies. The report provides an analysis of partnering ...
(Date:1/19/2017)... Many patients don,t realize that they may ... pharmacy just a few blocks away charges only $25 ... Medicationdiscountcard.com has created a price comparison engine ... their medication will cost at most nearby pharmacies. ... Medicationdiscountcard.com takes all of the hassle ...
Breaking Medicine Technology: