Navigation Links
Penn researchers grow liquid crystal 'flowers' that can be used as lenses
Date:12/20/2013

A team of material scientists, chemical engineers and physicists from the University of Pennsylvania has made another advance in their effort to use liquid crystals as a medium for assembling structures.

In their earlier studies, the team produced patterns of "defects," useful disruptions in the repeating patterns found in liquid crystals, in nanoscale grids and rings. The new study adds a more complex pattern out of an even simpler template: a three-dimensional array in the shape of a flower.

And because the petals of this "flower" are made of transparent liquid crystal and radiate out in a circle from a central point, the ensemble resembles a compound eye and can thus be used as a lens.

The team consists of Randall Kamien, professor in the School of Arts and Sciences' Department of Physics and Astronomy; Kathleen Stebe, the School of Engineering and Applied Science's deputy dean for research and professor in Chemical and Biomolecular Engineering and Shu Yang, professor in Engineering's departments of Materials Science and Engineering and Chemical and Biomolecular Engineering. Members of their labs also contributed to the new study, including lead author Daniel Beller, Mohamed Gharbi and Apiradee Honglawan.

Their work was published in Physical Review X.

The researchers' ongoing work with liquid crystals is an example of a growing field of nanotechnology known as "directed assembly," in which scientists and engineers aim to manufacture structures on the smallest scales without having to individually manipulate each component. Rather, they set out precisely defined starting conditions and let the physics and chemistry that govern those components do the rest.

The starting conditions in the researchers previous experiments were templates consisting of tiny posts. In one of their studies, they showed that changing the size, shape or spacing of these posts would result in correspondin
'/>"/>

Contact: Evan Lerner
elerner@upenn.edu
215-573-6604
University of Pennsylvania
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
2. UC Santa Barbara researchers discover genetic link between visual pathways of hydras and humans
3. Researchers attempt to solve problems of antibiotic resistance and bee deaths in one
4. UNH researchers find African farmers need better climate change data to improve farming practices
5. Ottawa researchers to lead world-first clinical trial of stem cell therapy for septic shock
6. Researchers uncover molecular pathway through which common yeast becomes fungal pathogen
7. Researchers print live cells with a standard inkjet printer
8. Columbia Engineering and Penn researchers increase speed of single-molecule measurements
9. Researchers reveal how a single gene mutation leads to uncontrolled obesity
10. Researchers discover novel therapy for Crohns disease
11. New paper by Notre Dame researchers describes method for cleaning up nuclear waste
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Penn researchers grow liquid crystal 'flowers' that can be used as lenses
(Date:9/30/2014)... Ocean Health Index rates the Earth,s oceans at ... addition, for the first time, the report assessed ... national jurisdiction (high-seas areas) all critical regions ... providing sustainable food sources. , In the third ... by scientists from UC Santa Barbara,s National Center ...
(Date:9/30/2014)... Calif. The National Institutes of Health (NIH) ... today to develop an electrode array system that ... brain works through unprecedented resolution and scale. , ... to support President Obama,s BRAIN (Brain Research ... research effort to revolutionize our understanding of the ...
(Date:9/30/2014)... drinking water may increase the risk of stillbirth ... led by a Boston University School of Public ... journal Environmental Health , compared 1,091 PCE-exposed ... in Cape Cod, Ma., where water was contaminated ... by the installation of vinyl-lined asbestos cement pipes. ...
Breaking Biology News(10 mins):Rating the planet's oceans 2Rating the planet's oceans 3NIH taps lab to develop sophisticated electrode array system to monitor brain act 2NIH taps lab to develop sophisticated electrode array system to monitor brain act 3Contaminated water linked to pregnancy complications, BU study finds 2
... - Rainfall data from a NASA satellite show that summertime ... than on weekends. Scientists say air pollution from humans is ... and the day of the week is evident in data ... Midweek storms tend to be stronger, drop more rain and ...
... has demonstrated the role of a gene important to ... that requires coordination of differentiation of immature neural cells ... numbers. Until now, the mechanisms regulating these distinct cellular ... will be published in the Feb. 15 issue of ...
... 2008 -- As organic farming becomes more common, ... increasingly important. In a recent study in Journal ... discrimination to determine if non-organic, synthetic fertilizers were ... the Instituto Murciano de Investigacin y Desarrollo Agrario ...
Cached Biology News:NASA data link pollution to rainy summer days in the southeast 2NASA data link pollution to rainy summer days in the southeast 3Trainor Lab characterizes gene essential for prenatal development of nervous system 2Is it organic or not? 2
(Date:10/1/2014)... BOSTON, MA (PRWEB) September 30, 2014 ... company, SoundConnect announces four new-hosted collaboration ... innovative bundles deliver high quality conferencing experiences for ... collaboration packages to choose from, businesses have optimized ... bundled solutions include audio only minutes ...
(Date:10/1/2014)... Industry leaders from retail ... around the theme, ,Commercial Opportunities in the Era of ... Elsevier , a world-leading provider of scientific, ... a gathering of some of the industry,s most prominent ... today and in the future. The Elsevier ...
(Date:9/30/2014)... YORK , Sept. 30, 2014 ... - 2014 Summary Global Markets Direct,s, ... - 2014, provides an overview of the Pacific ... This report provides comprehensive information on the ... LLC,s, complete with comparative analysis at various stages, ...
(Date:9/30/2014)... Proove Biosciences , the commercial and research leader ... genetic test built upon research from their published P.A.I.N. ... provide physicians with an objective way to understand theirs ... between individuals. With this new test, physicians will be ... predisposition that will affect their pain tolerance. , The ...
Breaking Biology Technology:SoundConnect Launches New Audio, Web and Video Bundles 2Elsevier Healthcare and Pharmaceutical Economics Conference 2014 To Convene Industry Leaders to Discuss Top Healthcare Business Issues 2Elsevier Healthcare and Pharmaceutical Economics Conference 2014 To Convene Industry Leaders to Discuss Top Healthcare Business Issues 3Pacific Northwest Biotechnology, LLC - Product Pipeline Review - 2014 2Pacific Northwest Biotechnology, LLC - Product Pipeline Review - 2014 3Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 2Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 3
... ATLANTA, April 1, 2008 Piedmont Heart Institute ... 20-member cardiovascular,physician practice, Cardiology of Georgia, P.C. (COG), ... 1, 2008. With eight,locations including Buckhead, Canton, Fayetteville ... practice under the Piedmont Heart Institute and an,important ...
... April 1, 2008 ,Neurobiological Technologies, Inc. (NTI(R)) (Nasdaq: ... M. Loar has been appointed Chief,Financial Officer. Mr. Loar ... Loar joins the company from Osteologix, where he has ... a proven track record as a chief financial officer, ...
... LONDON, April 1, 2008 Plethora Solutions Holdings ... for the,treatment and management of urological disorders, today ... financing agreement with Paul Capital,Healthcare. Through this agreement, ... with $15 million payable upon signature and a ...
Cached Biology Technology:Piedmont Heart Institute Welcomes Cardiology of Georgia 2Piedmont Heart Institute Welcomes Cardiology of Georgia 3Piedmont Heart Institute Welcomes Cardiology of Georgia 4Neurobiological Technologies Appoints Matthew M. Loar as Chief Financial Officer 2Neurobiological Technologies Appoints Matthew M. Loar as Chief Financial Officer 3Plethora and Paul Capital Healthcare sign a $25 million revenue interest financing agreement with an option for an additional $3 million equity investment 2Plethora and Paul Capital Healthcare sign a $25 million revenue interest financing agreement with an option for an additional $3 million equity investment 3Plethora and Paul Capital Healthcare sign a $25 million revenue interest financing agreement with an option for an additional $3 million equity investment 4
... sizing single-stranded RNA ranging from 0.5 kb to 10 ... consists of nine bands in even increments (0.5 1 ... to simplify size estimation. The 1.5 kb band is ... and identification of RNA bands on the gel. All ...
Recombinant Mouse Wnt-3a...
Homo sapiens jumping translocation breakpoint...
One-step, microplate or cuvet, colorimetric, detection range 0.01 g/dL to 5 g/dL. Procedure: 5 min....
Biology Products: