3004 - The Lennard-Jones potential energy between atoms in a solid as a function of separation distance is given by 12 U

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3004 The Lennard Jones Potential Energy Between Atoms In A Solid As A Function Of Separation Distance Is Given By 12 U 1 (80.49 KiB) Viewed 41 times

3004 - The Lennard-Jones potential energy between atoms in a solid as a function of separation distance is given by 12 U() &(( * - 2 (2) (0) State the meaning of term 1 and term 2 within the square brackets and explain their origin. (4) Find the equilibrium separation distance based on the above equation, where the potential is the minimum. (Hint: use the first derivative of the potential) (4) (iii) Find the binding energy (the potential energy at the equilibrium separation) based on the above equation. (iv) Derive the separation distance for maximum theoretical strain at which the force between atoms reaches the maximum (b) Explain the origin of surface energy using the binding energy concept and a schematic diagram. (5)