“Imagine … if there was a full color image of Queen Elizabeth and she
turned and looked at you, and gave you a wink.”
That was how Clint Landrock, a co-founder of Nano Tech Security in
Vancouver, described his company’s work to place 3D holograms on bank notes.
Landrock told the Vancouver Star that such holograms would
soon replace the two-dimensional holographic strips now used as a
security device on many paper currencies, but which, he says, are
often not even noticed by users.
Inside Coin World: About those 1805 silver
dollars Although an 1806 Mint document claims 321
silver dollar were made in 1805, no such coins are known today. It
took a later book to explain the reference.
That would not be the case with the 3D versions, which would also
be difficult and expensive to duplicate. As Landrock described it,
first, for the hologram, an electronic beam lithography (e-beam)
machine creates a form of stencil coated with electron-sensitive
material in patterns 1/10,000 the width of a human hair. A square
centimeter image has billions of pixels. Next, he says, the stencil is
used to make a printing block that is good for hundreds of thousands
There are very few e-beam machines in the world and most are for
research purposes. Nano Tech has one that can print images 10 by 10
centimeters (3.9 inches) large, making it usable for commercial
applications. With a 3D hologram that size, Landrock says, “even
someone at a till who only has a few seconds to study the bill would
be able to spot it, or notice if it wasn’t there.”
He says he is working with various G7 countries and that the
technology should be reality soon.
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