Re: [Aroid-l] lotus effect with Colocasia fallax

From: =?iso-8859-1?B?ZGF2aWQgYnL2ZGVyYmF1ZXI=?= <david_dav44 at hotmail.com> on 2011.01.13 at 12:53:25(21740) Hi Ted, Pistia is in fact a very beautiful example for a water-repellent surface. It has to be kept in mind - as you mention - that it generates this superhydrophobic effect with hairs (not with papillate cells like in Nelumbo or Colocasia) that are covered with wax. So, the term 'lotus-effect' describes the syndrom of superhydrophobicity (which means that the contact angle of a water droplet is at least 150°), but there are different structures within the Araceae and other plant families, that produce this effect. David Broederbauer HTML +More > Date: Wed, 12 Jan 2011 13:04:17 -0500 > From: oppenhauser2001@gmail.com > To: aroid-l@www.gizmoworks.com > Subject: Re: [Aroid-l] lotus effect with Colocasia fallax > > Geneviève, > > The lotus effect is quite common in my experience. It has been getting > a lot of attention in the popular press lately and there are a number > of academic studies of the phenomenon using nano materials. A Google > search will turn up many hits. > > One of the best displays can be seen on the humble aroid Pistia. > Leaves of Pistia will support quite a large water droplet with no > wetting of the leaf surface that supports the hairs. > > Ted Held. > Detroit > > 2011/1/11 Geneviève Ferry <jpcferry2@wanadoo.fr>: > > Dear aroiders , > > > > Today, three students came looking leaves Colocasia fallax to understand the > > phenomenon of superhydrobicity (lotus effect). > > Do you have information on this phenomenon? > > (Experience, etc. ....) > > > > Thank you for your help. > > > > Best wishes , > > > > Geneviève Ferry > > _______________________________________________ > > Aroid-L mailing list > > Aroid-L@www.gizmoworks.com > > http://www.gizmoworks.com/mailman/listinfo/aroid-l > > > > > _______________________________________________ > Aroid-L mailing list > Aroid-L@www.gizmoworks.com > http://www.gizmoworks.com/mailman/listinfo/aroid-l --_0b2d9375-fbdc-4bd4-9511-a284f79e2a09_-- --==============(42853695103802685=

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