Navigation Links
Applied scientists create wrinkled 'skin' on polymers

Applied scientists demonstrated a new method for developing wrinkled hard skins on the surface areas of polymers using a focused ion beam. By controlling the direction and intensity of the ion beam, the researchers literally sculpted patterns on flat areas of polydimethylsiloxane, a silicon-based organic polymer (more commonly known as the primary ingredient in Silly Putty). The technique has potential use for biological sensors and microfluidic devices and may offer new ways to build custom-made cell templates for tissue engineering.

The work is a collaboration among researchers at Harvard University and Seoul National University. The Harvard group consisted of John W. Hutchinson, Abbott and James Lawrence Professor of Engineering, Myoung-Woon Moon, Post-doctoral Fellow, and Ashkan Vaziri, Lecturer on Engineering and Research Associate in Applied Mechanics, all of Harvard Engineering and Applied Sciences. Their findings were published in the Proceedings of the National Academy of Sciences. The researchers have also filed for a U.S. patent covering the discovery.

"This technique is a one-step process for creating wrinkled skins," explains Vaziri. "The method is more robust compared with traditional techniques. The patterns can be generated along desired paths by simply controlling the relative movement of the ion beam and polymeric substrate. It's almost like using an airbrush on fabric. At a smaller scale the desired morphology of wrinkles can be achieved by controlling the ion beam intensity."

Because only the areas exposed to the beam are affected, the method enabled the scientists to create a variety of patterns--from simple one-dimensional wrinkles to peculiar and complex hierarchical nested wrinkles--along desired paths. Specific examples to date include "S" shapes, circular patterns, and long horizontal channels akin to the repeating tines of a closed zipper.

"Irradiation by the ion beam alters the chemical composition of t
'"/>

Source:Harvard University


Page: 1 2

Related biology news :

1. Applied Biosystems Introduces Advanced Gene Expression Service Provider Program
2. Wisconsin scientists grow critical nerve cells
3. UCSB scientists probe sea floor venting to gain understanding of early life on Earth
4. UAB scientists discover the origin of a mysterious physical force
5. Fox Chase Cancer Center scientists identify immune-system mutation
6. Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.
7. U-M scientists find genes that control growth of common skin cancer
8. UCLA scientists transform HIV into cancer-seeking missile
9. RNA project to create language for scientists worldwide
10. Carnegie Mellon scientists develop tool that uses MRI to visualize gene expression in living animals
11. To control germs, scientists deploy tiny agents provocateurs
Post Your Comments:
(Date:12/4/2009)By measuring the total gene activity in organs relevant for coronary artery disease (CAD), scientists at the Swedish medical university Karolinska Institutet have identified a module of genes that is
(Date:12/4/2009)The electroencephalogram (EEG) is widely used by physicians and scientists to study brain function and to diagnose neurological disorders. However, it has remained largely unknown whether the electrod
(Date:12/4/2009)Using a new mathematical model of heart cells, University of Iowa investigators have shown how activation of a critical enzyme, calmodulin kinase II (CaM kinase), disrupts the electrical activity of h
Breaking Biology News(10 mins):Scientists discover gene module underlying atherosclerosis development 2How to read brain activity? 2U-Iowa study helps advance heart-related research 2For Older Walkers Faster Is Better 61159 1The New Pollutants Brewing in Our Water 61157 1The New Pollutants Brewing in Our Water 61157 2The New Pollutants Brewing in Our Water 61157 3The New Pollutants Brewing in Our Water 61157 4Uninsured Issue Takes Center Stage This Weekend in New Orleans 61155 1
...tober 2008 The European Molecular Biology Organiz... EMBO Molecular Medicine , a new journal dedicate...e between molecular biology and clinical research....original research offering molecular insights into...d human diseases as well as potential clinical app...
...nvestigating the rice genome has been developed by...fessor of plant pathology. The inexpensive, public... the 45,000 genes in the rice genome. Details are ...oS ONE . , In higher organisms, such as humans or...es at different times. Scientists have developed h...
...e of the virus, known as Seneca Valley Virus-001, ...f the Picornaviridae viral family, and confirms it...rus." The new study reveals that the virus,s outer...th uneven divets and raised spikesand the RNA stra...ike a whiffleball. , "It is not at all like other...
Other Biology News:Scripps research team solves structure of 'beneficial' virus 2
(Date:12/2/2009)NEW YORK, Dec. 2 Reportlinker.com announces that a new market research report is available in its catalogue: ,, Carbondioxide Incubators - A Global Market Perspective ,, http://www.reportlinker.co
(Date:12/2/2009)CALGARY, Dec. 2 /PRNewswire-FirstCall/ - Oncolytics Biotech Inc. ("Oncolytics" or the "Company") (TSX:ONC; NASDAQ: ONCY ) announced today that in connection with its previously announced unit offering
(Date:12/2/2009)SINGAPORE, Dec. 2 S*BIO Pte Ltd today announced data presentations on its novel oral JAK2 inhibitor, SB1518, at The American Society of Hematology 51st Annual Meeting and Exposition in New Orleans. ,
(Date:12/2/2009)The Scientist, a leading scientific magazine covering the life sciences, ranked Photometrics’ Evolve “Intelligent” EMCCD camera fourth among the publication’s “Top 10 Inn
Breaking Biology Technology:Reportlinker Adds Carbondioxide Incubators - A Global Market Perspective 2Reportlinker Adds Carbondioxide Incubators - A Global Market Perspective 3Reportlinker Adds Carbondioxide Incubators - A Global Market Perspective 4Oncolytics Biotech(R) Inc. Announces Exercise of Underwriters' Over-Allotment Option 2Oncolytics Biotech(R) Inc. Announces Exercise of Underwriters' Over-Allotment Option 3Oncolytics Biotech(R) Inc. Announces Exercise of Underwriters' Over-Allotment Option 4S*BIO Novel Oral JAK2 Inhibitor SB1518 Demonstrates Safety and Tolerability in Phase 1 Studies for the Treatment of Myeloproliferative and Other Hematological Disorders 2S*BIO Novel Oral JAK2 Inhibitor SB1518 Demonstrates Safety and Tolerability in Phase 1 Studies for the Treatment of Myeloproliferative and Other Hematological Disorders 3S*BIO Novel Oral JAK2 Inhibitor SB1518 Demonstrates Safety and Tolerability in Phase 1 Studies for the Treatment of Myeloproliferative and Other Hematological Disorders 4S*BIO Novel Oral JAK2 Inhibitor SB1518 Demonstrates Safety and Tolerability in Phase 1 Studies for the Treatment of Myeloproliferative and Other Hematological Disorders 5The Scientist Names Photometrics' Evolve EMCCD Camera One of the “Top 10 Innovations” of 2009 2The Scientist Names Photometrics' Evolve EMCCD Camera One of the “Top 10 Innovations” of 2009 3
...p and commercialize small-molecule ...und AEG40826 works synergistically with HGS TRAIL ...tivity of both drugs -, - IAP inhibitors also sh... anti- cancer agents across broad range of ca.... 20 ,Human Genome Sciences, Inc. (Nasdaq: HGSI )...
...ences, Inc. (Nasdaq: HGSI ) today announced that ...icensing and collaboration agreement with,Aegera T...econd randomized,Phase 2 trial of HGS-ETR1 in comb...wscom.com/cgi-bin/prnh/20010612/HGSLOGO ), This ...t and will be,held today, Thursday, December 20, 2...
... in your computer is there to keep the microproces...nent materials start to expand, inducing cracks th...dentally, ruin the chip. Thermal expansion can als...rate, reduce performance through changes in the el...icate structures that emit laser light. , Recentl...
Other Biology Technology:Human Genome Sciences and Aegera Therapeutics Announce Licensing and Collaboration Agreement on Novel Anti-Cancer Drugs 2Human Genome Sciences and Aegera Therapeutics Announce Licensing and Collaboration Agreement on Novel Anti-Cancer Drugs 3Human Genome Sciences and Aegera Therapeutics Announce Licensing and Collaboration Agreement on Novel Anti-Cancer Drugs 4Human Genome Sciences and Aegera Therapeutics Announce Licensing and Collaboration Agreement on Novel Anti-Cancer Drugs 5Human Genome Sciences and Aegera Therapeutics Announce Licensing and Collaboration Agreement on Novel Anti-Cancer Drugs 6Human Genome Sciences to Sponsor Conference Call 2'Hybrid' semiconductors show zero thermal expansion; Could lead to hardier electronics 2
Rabbit Anti-Human acetyl-Histone H3 (Lys 4) Antibody, Unconjugated from Upstate
Anti-gp64 Antibody, Unconjugated from Novagen
Mouse Anti-Mouse Ly 6C.2(Ly 28.2) Monoclonal Antibody, Unconjugated, Clone 5075-3.6 from CEDARLANE Laboratories Limited
Rabbit Anti-b-Catenin, phospho (Ser675) Antibody, Unconjugated from Spring Bioscience
Biology Products: