lets join two smart materials i.e. polycrastalline PZT crystal and shape memory alloy. When we heat the shape memory alloy (spring coil shaped) with cigarette lighter, it will expand and exert force on PZT crystal. This force will generate electric charge in the crystal (poled one). We can use this electric charge to charge our mobile cell or other cells, even when we are travelling or the actual charger is not available immediately. For further discussion mail me at aman22jan@rediffmail.com

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