Biomimicry News
Recent News |  Archives |  Tags |  About |  Newsletter |  Submit News |  Links |  Subscribe to BiomimicryNews.com RSS Feed Subscribe


More Articles
Enhanced instrument enables high-speed chemical imaging of tissuesEnhanced instrument enables high-speed chemical imaging of tissues

Lunar pits could shelter astronauts, reveal details of how 'man in the moon' formedLunar pits could shelter astronauts, reveal details of how 'man in the moon' formed

Scientists complete chromosome-based draft of the wheat genomeScientists complete chromosome-based draft of the wheat genome

Study led by indigenous people uncovers grizzly bear 'highway'Study led by indigenous people uncovers grizzly bear 'highway'

Tiny laser sensor heightens bomb detection sensitivityTiny laser sensor heightens bomb detection sensitivity

A crystal wedding in the nanocosmosA crystal wedding in the nanocosmos

Has Antarctic sea ice expansion been overestimated?Has Antarctic sea ice expansion been overestimated?

Boosting the force of empty spaceBoosting the force of empty space

New research: When it hurts to think we were made for each otherNew research: When it hurts to think we were made for each other

Bacteria swim with whole body, not just propellersBacteria swim with whole body, not just propellers

Mixed genes mix up the migrations of hybrid birdsMixed genes mix up the migrations of hybrid birds

PIWI proteins and piRNAs regulate genes in the germline and beyondPIWI proteins and piRNAs regulate genes in the germline and beyond

The economic territory of Upper Palaeolithic groups is specified by flintThe economic territory of Upper Palaeolithic groups is specified by flint

Law of physics governs airplane evolutionLaw of physics governs airplane evolution

Wisconsin scientists find genetic recipe to turn stem cells to bloodWisconsin scientists find genetic recipe to turn stem cells to blood

Running for life: How speed restricts evolutionary change of the vertebral columnRunning for life: How speed restricts evolutionary change of the vertebral column

Brain waves show learning to read does not end in 4th grade, contrary to popular theory

Getting a grip on robotic graspGetting a grip on robotic grasp

The bend in the Appalachian mountain chain is finally explainedThe bend in the Appalachian mountain chain is finally explained

Cooperation among humans, a question of ageCooperation among humans, a question of age

Protein's 'hands' enable bacteria to establish infection, research findsProtein's 'hands' enable bacteria to establish infection, research finds

Less exercise, not more calories, responsible for expanding waistlinesLess exercise, not more calories, responsible for expanding waistlines

High earners in a stock market game have brain patterns that can predict market bubblesHigh earners in a stock market game have brain patterns that can predict market bubbles

A healthy lifestyle adds years to lifeA healthy lifestyle adds years to life

Platonic solids generate their 4-dimensional analoguesPlatonic solids generate their 4-dimensional analogues

Do probiotics help kids with stomach bugs?Do probiotics help kids with stomach bugs?

Strict diet suspends development, doubles lifespan of wormsStrict diet suspends development, doubles lifespan of worms

Identified for the first time what kind of explosive has been used after the detonationIdentified for the first time what kind of explosive has been used after the detonation

Copied from nature: Detecting software errors via genetic algorithmsCopied from nature: Detecting software errors via genetic algorithms

Why do dew drops do what they do on leaves? (1/13/2012)

Tags:
leaves, dew

Nobel laureate poet Rabindranath Tagore once wrote, "Let your life lightly dance on the edges of time like dew on the tip of a leaf." Now, a new study is finally offering an explanation for why small dew drops do as Tagore advised and form on the tips, rather than the flat surfaces, of leaves. It appears in ACS' journal Langmuir.

In the study, Martin E. R. Shanahan observes that drops of water have a preference for exactly where they collect on leaves as their surfaces cool in the morning and afternoon. Those droplets, which condense from water vapor - moisture - in the air, collect randomly across the surfaces of flat leaves. However, dew drops tend to accumulate at the tips of spindly leaves, even if that means defying gravity by moving upwards. He explains that an inherent "unwillingness" or "lack of necessity" of water drops to move on a dry surface governs their positioning on flat leaves, causing them to stay where they form. Dew's tendency to head to the end of finely pointed leaves, however, sent Shanahan looking for a different explanation.

The answer is based on the fundamental principle of free energy, that everything in nature seeks the lowest possible energy state. Shanahan modeled two types of dew drops on a theoretical (simplified) cone-shaped leaf: a thin, cylindrical sheath of water and a spherical drop centered on the cone's axis. In both cases, he found that the drop lowered its energy by moving toward the point of the leaf.

Note: This story has been adapted from a news release issued by the American Chemical Society

Post Comments:

Search
New Articles
Squid sucker ring teeth material could aid reconstructive surgery, serve as eco-packaging

Study of animal urination could lead to better-engineered productsStudy of animal urination could lead to better-engineered products

Carbon-fiber epoxy honeycombs mimic the material performance of balsa woodCarbon-fiber epoxy honeycombs mimic the material performance of balsa wood

Collecting light with artificial moth eyesCollecting light with artificial moth eyes

Researchers use living systems as a guide to develop advanced technologiesResearchers use living systems as a guide to develop advanced technologies

Tiny muscles help bats fine-tune flight, stiffen wing skin

Nature inspires drones of the futureNature inspires drones of the future

Scientists study biomechanics behind amazing ant strengthScientists study biomechanics behind amazing ant strength

How octopuses don't tie themselves in knots revealedHow octopuses don't tie themselves in knots revealed

Spiders spin possible solution to 'sticky' problemsSpiders spin possible solution to 'sticky' problems

Using nature as a model for low-friction bearingsUsing nature as a model for low-friction bearings

Manmade artificial shark skin boosts swimming

Which has a more efficient 'engine': A tuna or a whale?

Mantis shrimp stronger than airplanesMantis shrimp stronger than airplanes

New material coating technology mimics nature's lotus effect



Archives
July 2014
June 2014
May 2014
April 2014
March 2014
February 2014
January 2014
December 2013
November 2013
October 2013
September 2013
August 2013
July 2013
June 2013
May 2013
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
January 2010
December 2009
November 2009
October 2009
September 2009
August 2009
July 2009
June 2009
May 2009
April 2009
March 2009
February 2009
January 2009
December 2008
November 2008
October 2008
September 2008
August 2008
July 2008
May 2008
April 2008
March 2008
February 2008
January 2008
December 2007
November 2007
October 2007
September 2007
August 2007
July 2007
June 2007
October 2006


Science Friends
Agricultural Science
Astronomy News
Sports Tech
Biology News
Cognitive Research
Chemistry News
Tissue Engineering
Cancer Research
Cybernetics Research
Electonics Research
Forensics Report
Fossil News
Genetic Archaeology
Genetics News
Geology News
Microbiology Research
Nanotech News
Parenting News
Physics News


  Archives |  Submit News |  Advertise With Us |  Contact Us |  Links
Use of this site constitutes acceptance of our Terms of Service and Privacy Policy. All contents © 2000 - 2015 Web Doodle, LLC. All rights reserved.