Molecular Interactions

Molecular forces determine the physico-chemical properties of various forms of matter such as gases, liquids and solids. The major focus of this virtual lab is to provide a thorough grounding in the fundamental concepts of molecular forces (without using quantum mechanical principles) to undergraduate students and introduce them to the optical and magnetic tweezer experimental techniques that are used to measure molecular forces.

The most stable geometry of a molecule is determined by the balance of attractive and repulsive forces between its atoms. The interactions between the atoms of a molecule can be split into two groups, bonded and non-bonded interactions. In the former group all intramolecular interactions such as bonds, angles and dihedrals are being taken care of, whereas in the latter interactions such as Van der Waals and electrostatics are considered.

The aim of this lab is to use optical and magnetic tweezer experiments to understand the nature of molecular forces and associated parameters that quantify the strengths of these atomic interactions.

Please note:
This lab requires few Software Dependencies to run the Simulations
i. Adobe Flash Plugin, Java1.7, Java3D 1.5.2 (The Java 3D API enables the creation of three-dimensional graphics applications and Internet-based 3D applets)
ii. Browsers Firefox 50 and it's below versions, internet explorer.
iii. IcedTea Plugin for Linux Operating System.

We recommend the following for the smooth running of these simulations

i. Install Adobe Flash Plugin - This will enable you to run the experiments that need Flash support. Please follow the link to install the Flash Plugin
ii. Install VirtualBox - Virtual Labs offers a free download of a customized VirtualBox with the required pre installed all the software dependencies(Java 1.7, Java3D-1.5.2, IcedTea Plugin and Adobe Flash Plugin). Please follow the link to download, install and use VirtualBox for Virtual Labs.