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In science teaching at the school level and higher, it is challenging task to express the nano science and technological to common man. The fundamental interaction and collective behavior could be demonstrated through modeling where the quantum science principles and phenomena could be bought in the visible range and human perception.
We have designed several models to illustrate following in particular like, Vander wall force, Dipole interaction, equilibrium in a plane, atomic configurations,Bohr orbitals, Raman Effect, Rutherford scattering, Modes of Molecular vibrations. These are all mechanical models working at the low frequency range depicting the quantum phenomena in visible range. The materials used for developing these models are permanent magnets, balls springs, speakers and signal generator.
In Vander Wall force the superposition of gravitational and magnetic interactions are used. In Raman the energy transfer as a function of phase of the pendulum is used. For Bohr orbitals the stationary waves in circular loops are setup. Simple molecules like, water, methane and ammonia are made using balls and springs to show modes of vibrations.
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