Brown dwarfs and free-floating planetary-mass objects in star-forming regions are vital tracers of the low mass end of star-formation and are key analogs to exoplanets around stars. The detection and characterization of young, free-floating low-mass objects allow physical studies of objects in the mass range of extra-solar planets. The complete census of a star-forming cloud, to masses well below the deuterium-burning limit, will also constrain the very low-mass end of the IMF, a key test of theories for star and brown dwarf formation. However, it is difficult to identify and characterize these objects in star-forming regions given their low-luminosity and highly reddened environments. This talk presents some novel techniques to identify the extreme low-mass population in star-forming regions of solar neighborhood.

Follow-up high resolution and high sensitive imaging and spectroscopic analysis are performed using the state-of-the-art space-based and ground-based observing facilities. The newly identified coolest, young planetary-mass objects and their characteristics will be presented in the talk.