Library@Kendriya Vidyalaya Pattom

Where Minds meet and Ideas pop up !

Why water droplets stick to rose petals?

Why water droplets stick to rose petals?

ESHA SEKHAR

observing rose petals with water droplets glittering in the sunshine, some researchers in China wondered why the water droplets stuck to the surface of the petal. Even when they turned the flower upside down, the droplets didn’t fall off. “We work on the interaction of solid surfaces with water, including natural surfaces. When we saw rose petals with water droplets on them, we picked some petals for study,” said Lin Feng, the lead author from the department of chemistry, Tsinghua University,China.

Research followed observation and what has come to light is the petal effect—the physical basis of a rose to hold on to water droplets. This hints at its use in adhesives, paints and fabrics, says the study published in the American Chemical Society’s journal, Langmuir (Vol 24, No 8). It is the opposite of the lotus effect discovered earlier, which says that water droplets can roll off easily from lotus petals.

Rose petals have tiny outgrowths on them that are not visible to the naked eye. Called micro-papillae, these outgrowths give the petals sufficient roughness, with two fallouts. One, the petals become highly water repellent, a property called superhydrophobicity, and two, it makes them adhesive.

The micro papillae form a seal with water droplets allowing them to cling to the surface of the petal.

The experiment was conducted by Feng, along with scientists of the Chinese Academy of Sciences, Jilin University, Changchun, and the National Center for Nanoscience and Technology, Beijing. The researchers also developed a synthetic petal to test for varied applications.

According to Lin, the synthetic petals, which they used as moulds to make polymer films, could be used for paint coatings, functional fibres and microfluids. The most exciting application, she says, is in a laboratory as lab-on-a-chip devices. Surfaces could be used to transfer water droplets with the risk of contamination. This is a pre-requisite for analyzing micro samples.

Ashutosh Sharma of the Department of Chemical Engineering, iit Kanpur, says the material can be used to make water-retaining surfaces. He is confident of its use in other areas after further research is done.

Courtesy: Down To Earth

Filed under: Snippets,

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Live updates

Library@KV Pattom

Dear Visitor,

This is the official Blog of Library @ Kendriya Vidyalaya Pattom, launched in September 2007. Explore the site, you will get a complete picture of all offline and online resources available and services provided by the Library. Here is a friend, who will help you to find, evaluate and use the right information at right time.

You are the Visitor, Number

  • 5,091,759

5 Million Hits and counting..

Thank you all for making this blog a great success.

Upcoming Events

No upcoming events

KVS Innovations and Experimentations Award 2010

"Library Junction" won the KVS Innovations and Experimentation Award 2010.

All India Competition on Innovative Practices and Experiments in Education for Schools and Teacher Education Institutions 2010-’11

Library Junction won the "All India Competition on Innovative Practices and Experiments in Education for Schools and Teacher Education Institutions 2010-'11" conducted by NCERT.

Visit your Library

Browse Books and Periodicals. Read Newspapers. Pick a New Book from the 'New Arrivals' rack. Search the Internet and the OPAC. Refer for assignments and projects. Suggest a book. Ask a question.Write your comments. And more...Visit the Library Today itself. You are most welcome.

Telephone Reference

+91 9447699724 (Librarian)

E-mail Reference

mail your reference questions to librarykvpattom@gmail.com

Ask the Librarian

“Billion beats:the pulse of India”

The fortnightly e-paper uplinked to www.abdulkalam.com. To visit click the link "E-paper" on Web directory

Website of the Week

http://www.bbc.co.uk/ahistoryoftheworld/

Archives

RSS This day in History

  • Pompey defeated by Julius Caesar at the Battle of Pharsalus: 9 August 48 - This Day in History
    During the Roman Civil War of 49–45 , Julius Caesar's troops on this day in 48 decisively defeated the army of Pompey at the Battle of Pharsalus, causing Pompey to flee to Egypt, where he was subsequently murdered.More Events on this day:1945: The second atomic bomb dropped on Japan by the United States in World War II struck the city of Nagasaki.1 […]
  • Amedeo Avogadro: Biography of the Day
    Amedeo AvogadroBorn this day in 1776, Amedeo Avogadro of Italy showed that, under controlled conditions of temperature and pressure, equal volumes of gases contain an equal number of molecules—what became known as Avogadro's law.
  • Concise Encyclopedia Book and CD-ROM: Special Price from The Britannica Store
    For RSS subscribers The Britannica Store presents a special 20% discount on the Concise Encyclopedia and free CD-ROM. This thoroughly revised and expanded edition of Britannica's most popular publication worldwide is a one-volume encyclopedia containing 28,000 articles accompanied by colorful photographs, diagrams, maps, and flags. The Britannica Concis […]

Recommendations

Library Bookmark

Be a Fan of Library on Facebook

e-reading hub @ Your Library

Face a Book Challenge

RSS KV News Digest

  • An error has occurred; the feed is probably down. Try again later.

Reader of the Month (September 2016)

Sruthi S., VII A

Learn anything freely with Khan Academy Library of Content

A free, world-class education for anyone, anywhere.

Interactive challenges, assessments, and videos, on any topic of your interest.

It’s My Library: Share your Bookfies, Libfies and all Library Stories

Enter your email address to follow this blog and receive notifications of new posts by email.

Join 5,661 other followers

Face a Book: The Reading Challenge

InfoLit India: Information Literacy Project for Young Learners

Subscribe SMS updates

Send: ON Library_KVPattom to 9870807070

‘School Libraries Rocks’ ; International Bookmark Exchange Programme 2015, with Croatia

CBSE Toll Free Tele/Online Helpline

Students can call 1800-11-7002 from any part of the country. The operators will answer general queries and also connect them to the counselors for psychological counseling. On-line counseling on: director.edusat@rediffmail.com, mcsharma2007@rediffmail.com

Child Line (1098)

CHILDLINE 1098 service is a 24 hour free emergency phone outreach service for children in need of care and protection.

Population Stabilization in India Toll Free Helpline

Dial 1800-11-6555 for expert advice on reproductive, maternal and child health; adolescent and sexual health; and family planning.

Quick Answers

CONTACT

S.L.Faisal, Librarian, Kendriya Vidyalaya (Shift-I) Pattom, Thiruvananthapuram-695 004, Kerala, India. Mail: librarykvpattom at gmail.com
%d bloggers like this: