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There are lots of smart materials.For example,Shape memory alloys are made from metal alloysShape memory polymers, which are plasticsEtc
There are several alloys that exhibit shape memory, the most widely known is Nitinol.
Shape memory alloys, such as nitinol, are materials that can easily change their shape when exposed to heat or stress. These alloys have the ability to return to their original shape after deformation, making them useful in applications like orthodontic braces and stents.
Hysteresis occurs most commonly in ferromagnetic and ferroelectric materials such as rubber bands and shape-memory alloys. When the material is flexed the atoms often break apart causing hysteresis.
Shape memory alloys can be used by dentist.
Nitinol is the only one I know of
Intelligent, or smart, materials are materials which change based on external stimuli. For instance, they change color depending on voltage (like liquid crystal displays). Thermoelectric materials can convert temperature differences into electricity, or there are shape memory (and magnetic shape memory) alloys, etc.
H. A Mohamed has written: 'Determination of the recovery stresses developed by shape memory alloys' -- subject(s): Alloys, Physical metallurgy, Martensitic transformations
A shape memory alloy (SMA, smart metal, memory alloy, muscle wire, smart alloy) is an alloy that "remembers" its original, cold, forged shape, and which returns to that shape after being deformed by applying heat. This material is a lightweight, solid state alternative to conventional actuators such as hydraulic, pneumatic, and motor-based systems. Shape memory alloys have applications in industries including medical and aerospace.
photosenstive material for holograohic memory doesnt exist...............
Flexon glasses are a titanium alloy like Nickel-Titanium. These are shape memory alloys that have the ability to transform between martensite and austenite phases when a load or temperature change is applied. they can be forged, extruded, or vacuum melted.
Cu-Zn-Al & Cu-Al-Ni