INTELLIGENT PAD
 (for string quartet)
 
 "Intelligent Putty" or "Thinking Putty" (German: "Thinking Putty")  is an industrial  manufactured silicone plastic. Because of its dilatants  It has properties under high loads  a high viscosity and at  low load a low one. This makes the material bounce  when thrown on the ground and can become brittle on hard impact  break.  On the other hand, with slow loading it dissolves and behaves more like a liquid.  Unlike other dilatant materials, Smart Putty has a Deborah number in the  Order of magnitude of 1.