# DLVO for complex solutions

Physics Asked by Marina on July 25, 2020

I am working with a complex solution of 2 proteins and salt. I have been trying to use DLVO (Derjaguin, Landau, Vervey, and Overbeek) theory to get an approximation of the Van Der Waals attractive force ($$F_{wppr}$$) and the electric double layer repulsive force ($$F_{el}$$) between the molecules in the solution. However, textbooks only provide equations of Van der Waals and EDL forces for two types of molecules/spheres/cylinders. How can I calculate the forces for a more complex solution (2 proteins and 2 ions for example)?

$$F_{wppr} = -frac{A}{6 D^2}left(frac{r_1 r_2}{r_1 + r_2}right)$$

$$F_{el} = kappa Z left(frac{r_1 r_2}{r_1 + r_2} right) e ^ {-kappa D}$$

## Related Questions

### Composition or engineering name for Soft iron core used in electromagnets

1  Asked on December 4, 2020

### Having trouble understanding the sign (+/-) in heat engine diagram

1  Asked on December 4, 2020

### Measuring one particle on this entangled state

1  Asked on December 4, 2020 by forpointing

### Show that a system of intersecting $D4$-$D6$ branes is supersymmetric

0  Asked on December 3, 2020 by ramiro-hum-sah

### What substance is being sprayed during this scene in Chernobyl?

0  Asked on December 3, 2020 by mattia-b89

### Is gravity just electromagnetic attraction?

8  Asked on December 3, 2020 by yashbhatt

### Where does the energy go when two drops combine?

1  Asked on December 3, 2020 by justjohan

### How to include temperature effect in optical bloch equations (optical pumping)?

1  Asked on December 3, 2020

### Can Z bosons mediate short-range forces between electrons?

2  Asked on December 3, 2020

### Helium balloon energy gain

1  Asked on December 3, 2020 by kotlopou

### How do you calculate the distance from center for centripetal force equation for long objects such as board or a hammer?

3  Asked on December 3, 2020 by physicsrocks

### Questions About Highly Coupled Magnetic Resonance

0  Asked on December 3, 2020 by juniorg7

### Path Integral formulation with a spontaneously broken symmetry?

0  Asked on December 3, 2020 by lucashwindowwasher

### References on what kind of order does the integer quantum Hall effect exhibit

0  Asked on December 3, 2020 by lxavier

### How to find transverse component of star’s velocity given its proper motion and distance from observation point?

3  Asked on December 3, 2020 by blaze

### Magnitude of relative velocity between two frames in special relativity

1  Asked on December 3, 2020 by darkenin

### Query about a protons magnetic moment precession during excitation in MRI

2  Asked on December 3, 2020 by vishal-jain

### What is the relation between a fixed force and work?

1  Asked on December 3, 2020 by chaoscenturian

### Can the mass of an object account for the total internal energy of the object?

3  Asked on December 3, 2020 by kenzo-tenma

### If we put diamagnetic material under strong electromagnet.Would the opposing magnetic fields strong enough to attract ferromagnetic materials?

1  Asked on December 3, 2020 by artur