1. You've designed a new nanoparticle that can stably encapsulate an influenza vaccine at room temperature. The nanoparticles have an average diameter of 300 nm and are stored in water. To determine the stability of this suspension, you decide to calculate the total DLVO interaction energy. Assume the following: Debye length, 2. = 75 nm Zeta potential, Z=-35 mV Hamaker constant, A.=k,T Separation distance, D= 50 nm Particles are not coated with steric-stabilizing molecules a. What is the total DLVO interaction energy between two particles? b. Short Answer: Is this interaction attractive or repulsive? c. Short Answer: Describe two things you could do to invert the interaction energy (i.e., flip the direction of force)