With the ability
to actuate at nanometer resolution over centimeters
of range, the implication is that data packed at a density of about
1014 bits/cm2 can be readily accessed.
What this means is 10 terabits
on your fingernail.
Recently, there
has been much buzz in the field of spintronics about a promising
new nonvolatile memory technology that is just now beginning to
hit the market. These Magnetoresistive Random Access Memory (MRAM)
devices are comprised of microscopic magnetic layers separated by an
insulating layer. Like all magnetic substances, each of those two
layers can be polarized in the same direction or opposite directions,
corresponding to the binary bits 1 and 0. With a grid of conductors
sandwiching these layers, individual grid-points become bits of
readable and writeable memory, that do not need an external power
source to retain state. Another promising nonvolatile memory technology
that also utilizes a conductive grid is based on a material called
polyethylenethioxythiophene, or PEDOT, which is a polymer plastic that
conducts electricity at low voltages, but permanently loses its
conductivity when exposed to higher voltages; i.e. binary bits 1 and 0.
With a grid of conductors sandwiching a layer of PEDOT, individual
grid points become bits of write-once, read-many memory.
The basic structure
of both these devices consists of memory cells sandwiched between
a grid of conductors. Accessing grid-points, and hence the memory
cells themselves, is where t.enables innovative nanopositioning
solution comes into the picture. Take away the addressing logic
of memory chips and replace it with the ability to access memory
cells via mechanical actuation and the result is a new market for
dense media devices (DMD) the disk-drives of the future.
t.enable is aiming to be the de-facto supplier for DMD actuation
solutions, before the potential has even been realized.