Developed high efficiency solar power management electronics such as Efficient solar battery charger, High efficiency solar battery inverters, Solar power controllers, Solar cell array protection devices, Solar powered sensors, Solar powered wireless sensors and communication devices, Solar powered environmental protection devices, Solar powered emergency management devices, Solar powered agriculture crop management devices, Solar powered food processing systems, Solar powered fisheries management devices, Solar powered water resource management devices, Solar powered small scale manufacturing industrial power systems. Environmental Pollution Measurement, Environmental Metrology, Radiological Protection, Industrial Sensors Technology, Sensors for Agriculture and Food Industry, Sensors for Water Quality and Water Resource Measurement and Nuclear Electronics. Mg Dir: Prof. (Dr.) Shyam Sunder Tiwari.