Category Archives: rough instead of smooth

tree frog climb wet and dirty surfaces as well as upside down surfaces without falling

TreeFrog_Laubfrosch_cropped.jpg.w300h400Here is an activity to try with a length of adhesive tape. Press the tape against a dusty surface several times. As expected, the tape quickly loses its holding strength as dust particles collect and coat the sticky side. In contrast, consider tree frogs which thrive in dusty, wet, or muddy surroundings. Yet they cling securely to branches and leaves, even hanging upside down. How are they able to hold on without falling?

Technical application:

holding applications

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will our lungs help to reduce carbon dioxid emissions on our planet?

lungsOur hard-working lungs clearly show intelligent planning. Within our lungs, countless tiny air sacks called alveoli exchange gases from the bloodstream, supplying fresh oxygen and removing carbon dioxide. The component membranes which allow separation and passage of the gases are about one thousand times thinner than a printed period. The total gas exchange area adds up to at least 70 time an adult’s total body surface area, or the size of a volleyball court. Specialized chemicals, especially carbonic anhydrase, help carry on the continuous gas exchange process.

Technical application:

Co2-filters

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Leaves learn us how to produce electricity and harvest water

Transpiration is the evaporation of water from the leaves of plants and trees. The undersidesTranspiration_Xerophyte.jpg of leaves are dotted with hundreds of tiny openings called stoma. Carbon dioxide enters the leaf through these pores, and water escapes.  A mature tree may evaporate hundreds of gallons of water on a warm, dry day. The process cools the vegetation and also allows the internal flow of nutrients. The familiar veins within leaves transmit the water to the stoma. Studies have shown that the branching Tomato_leaf_stomate.jpg.w300h307veins, called a dendrite pattern, are spaced out for maximum water flow. This leaf vein pattern may help design engineers build more efficient irrigation systems.

Tomato leaf stoma

 

Technical application:

generate  , harvest water

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Dromedary inspires for seawater-salt removal

DromedaryCamel.jpg.w180h221 The dromedary camel is at home in the hot Sahara Desert where temperatures can exceed 170°F (77°C). Special features of the camel’s nose allow it conserve precious moisture with each breath.

SaharaForestProject.jpg.w300h193

 

 

 

Technical application:

seawater-salt removal, desert greening

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Morpho butterfly; color without pigments

morphoMany morpho butterflies are colored in metallic, shimmering shades of blues and greens. These colors are not a result of pigmentation but are an example of iridescence through structural coloration: the microscopic scales covering the Morpho’s wings reflect incident light repeatedly at successive layers, leading to interference effects that depend on both wavelength and angle of incidence/observance.

Technical application:

“painting” without pigments, thermal sensors

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Desert beatle help us to harvest water

desertbeatleTo drink water, the S. gracilipes stands on a small ridge of sand using its long, spindly legs.

waterbottle

Technical application:

water bottles, tents for refugees, Steam Power Condensers, Refrigeration, Atmospheric Water Generation

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Gecko feet for car tires

geckoUsing design principles inspired by the nanoscopic hairs on the gecko, UC Berkeley researchers and colleagues have created a novel microfiber array which has very high friction but is not “sticky”.

gecko_tire

 

Technical application:

car tires, drive on solar panels

 

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Hook fastener with up to 35 tonns / m²

klettblumeHook and loop fasteners have become commonplace features of both industry and households.

hookfastener

 

These fasteners are resistant to chemicals and can withstand a tensile load of up to 35 tonnes per square meter at temperatures as high as 800°C.

Technical application:

Metaklett is basically suitable for use in all areas that require easily opened but stable fasteners, for example air-conditioning and ventilation systems in building services engineering and automotive construction.

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