Graphene-Based Plasmonic Sensor at THz Frequency with Photonic Spin Hall Effect Assisted by Magneto-optic Phenomenon

Plasmonics - Graphene monolayer of sub-nanometer thickness shows strong metallic and plasmonic behavior in terahertz (THz) frequency range. This plasmonic effect varies considerably when graphene...     

Insecticidal Toxic Proteins Produced by Photorhabdus luminescens akhurstii,a Symbiont of Heterorhabditis indica

We describe the isolation and characterization of an insect pathogenic bacterium from the entomopathogenic nematode Heterorhabditis indica (Karnataka strain), an isolate from the southern regions of India. The strain has been identified and characterized by phenotypic, biochemical tests and PCR-RFLP analysis of the 16S rRNA gene as Photorhabdus luminescens subsp. akhurstii. The insecticidal toxin complex produced by this bacterium has been purified through a series of steps including ultrafiltration, anion exchange chromatography, and gel filtration chromatography. The toxin consists of two protein complexes of approximately 1,000 kD and was active against the larvae of Spodoptera litura and Galleria mellonella.