Question:
I’m a PhD student in Malaysia, I would like to do research in “Material Processing – Development of Micro part using Metal Injection Moulding Process”.  I would like to know some new subjects in this field for research in the world.  

Answer:
I would expect your Ph.D. supervisor to have the greatest say in this matter.  However here is my two cents:

As the parts become smaller in size, the powder also needs to be smaller in size to ensure the features you want to develop in the part are discernable.  With finer powder particles you need binders with molecular sizes comparable to your powders.

I hope this helps. I wish you luck with your studies.