Santanu Ghosh has long expertise in the field of field emision from Cabon nanotubes and nanocomposites. He is PI of 5 international project, which include one presitigious CRP fundaed by IAEA, UNO. He is also PI of 7 national project. He has delivered 40 invited talks, published two books, 6 book chapters and 87 paper in peer reviewed journals. He ha s presently devoloped prototypes of CNT based field emission microscope and x-ray sources. One of this is filed as patentt.