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10-03 :: March 2010

nanotimes

News in Brief

Right: One photograph shows a bent disc of the nacre-pa- per (9cm in diameter and 0.06mm thickness), demonstra- ting a reasonable flexibility of the material. The inset shows the good optical translucency of the same material with the name of the group placed behind it. © Andreas Walther / Helsinki University of Technology/ Aalto University, Finland

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The second image shows a SEM image of the cross section of the nacre paper. It exhibits a layered arrangement of the inorganic clay platelets, each clay having a thickness of about 1nm and lateral dimensions of 50-1000nm. © Andreas Walther / Helsinki University of Technology/ Aalto University, Finland

A third image shows a scanning electron micrograph (SEM) of the cross section of natural nacre, exhibiting the layered arrangement of CaCO3

aragonite mineral platelets. The

thickness of these platelets is 0.4 x 0.5 microns and the lateral dimension are around 10-20 microns. © Andreas Walther / Helsinki University of Technology/ Aalto University, Finland

So the materials are similar in structure albeit having diffe- rent dimensions. The layered arrangement of hard and soft materials are very much alike in both materials. Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69