Following a computer science degree I would love to follow a phd research. The problem is that all funded phds that are advertised from the specific university do not meet my desired criteria, i.e. research projects that target the improvement of the quality of life of vulnerable groups of people.
I know that my ex bachelor dissertation supervisor used do research and observe researches of my desired criteria.
Would it be ok asking him through email whether such oportunities exist? Or would that be just a waste of his time?