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
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:

(Date:12/1/2015)... ... December 01, 2015 , ... McLean, VA., December ... a fixed price per sprint agile development contract to support the National Geospatial-Intelligence ... five years, provides software engineering, infrastructure, as well as operations and sustainment support ...
(Date:12/1/2015)... ... December 01, 2015 , ... TCS ... care management and population health arenas, is pleased to announce that VIP Care ... services, has successfully implemented the ACUITY Complete Care™ Management to back their collaborative ...
(Date:12/1/2015)... CA (PRWEB) , ... December 01, 2015 , ... ... has selected 10 semi-finalists to head to Las Vegas for CES 2016, the world’s ... including CEO of Consumer Technology Association Gary Shapiro, Founding Partner of Pacific Investments Veronica ...
(Date:12/1/2015)... Aliso Viejo, CA (PRWEB) , ... December 01, 2015 , ... ... any length of footage, and with full control over customization, the possibilities are truly ... color, frame rate, position randomization, overlay depth position, vertical flip, horizontal flip, depth of ...
(Date:12/1/2015)... ... December 01, 2015 , ... ... Magazine as a Modern Man for 2015. , Angeleno Magazine is a ... United States. Established in 1994, Modern Luxury includes more than 50 magazine titles ...
Breaking Medicine News(10 mins):
(Date:12/1/2015)... -- Royal Philips  (NYSE: PHG, AEX: PHIA) ... that produces high-contrast images for all anatomies in situations ... the 2015 Radiological Society of North America Annual ... digital imaging solution providing grid-like contrast improvement and enhanced ... supports "first-time-right imaging" by decreasing the need for retakes ...
(Date:12/1/2015)... 2015 Array BioPharma Inc. (Nasdaq: ... Chief Executive Officer, Ron Squarer , ... Conference in New York.  The public is ... a webcast on the Array BioPharma website. ... --> , --> ...
(Date:12/1/2015)... , Dec. 1, 2015 Pharma Tech Outlook ... Top 10 Clinical Data Management Solution Providers - 2015 ... distinguished panel comprising CEOs, CIOs, VCs, analysts, and the ... illustrious list of top 10 clinical data management solution ... on pages 14 and 36 respectively). ...
Breaking Medicine Technology: