SmSd (Smart Materials - Smart Design)
Smart materials are often considered to be a logical extension of the trajectory in materials development toward more selective and specialized performance.

Solution

Smart planes � intelligent houses � shape memory textiles �
micromachines � self-assembling structures � color-changing
paint � nanosystems. The vocabulary of the material world has
changed dramatically since 1992, when the first �smart
material� emerged commercially in, of all things, snow skis.
Defined as �highly engineered materials that respond intelligently
to their environment�, smart materials have become
the �go-to� answer for the 21st century�s technological needs.
Smart materials are often considered to be a
logical extension of the trajectory in materials development
toward more selective and specialized performance. For many
centuries one had to accept and work with the properties of a
standard material such as wood or stone, designing to
accommodate the material�s limitations, whereas during the
20th century one could begin to select or engineer the
properties of a high performance material to meet a
specifically defined need. Smart materials allow even a further
specificity � their properties are changeable and thus responsive
to transient needs. For example, photochromic materials
change their color (the property of spectral transmissivity) when exposed to light: the more intense the incident light,
the darker the surface. This ability to respond to multiple
states rather than being optimized for a single state has
rendered smart materials a seductive addition to the design
palette since buildings are always confronted with changing
conditions. As a result, we are beginning to see many
proposals speculating on how smart materials could begin
to replace more conventional building materials.