We present the design, fabrication, simulation and initial characterisation of tantalum pentoxide (Ta 2 O 5 ) optical waveguides micro-ring resonators for purpose supercontinuum frequency comb generation. Spectral broadening results are presented linear Ta a range central pump wavelengths between 900 nm 1500 nm. These used as basis dispersion engineering development resonators. The losses sputt...

Single-walled carbon nanotubes (SWCNTs), which were commercial grade containing 60-70 wt% impurity, were treated in a mild poly(phosphoric acid) (PPA). The purity of PPA treated SWCNTs was greatly improved with or without little damage to SWCNTs framework and stable crystalline carbon particles. An amide model compound, 4-(2,4,6-trimethylphenoxy)benzamide (TMPBA), was reacted with SWCNTs in PPA...

Long lasting colored pattern formation on sol–gel deposited vanadium pentoxide sV2O5d thin films is demonstrated by atomic force microscope sAFMd nanolithography. The films can be locally colorized by application of a positive dc bias voltage on the conductive AFM tip. The patterns can be erased, or “bleached,” by application of a negative bias voltage. The changes in optical reflectivity, topo...

Background: Considering the high cost of fertilizers and adverse effect its overuse on environment soil health, proper organic manure-fertilizer recommendations basis test values, residual yield targets chilli becomes vital. Methods: Field experiment was carried out Periyanaickenpalayam series Inceptisol order at farmers holding, Dindigul, Tamil Nadu during 2021-2022 after establishment marked ...

The feasibility of edge-functionalization of graphite was tested via the model reaction between pyrene and 4-(2,4,6-trimethylphenyloxy)benzamide (TMPBA) in poly(phosphoric acid) (PPA)/phosphorous pentoxide (P(2)O(5)) medium. The functionalization was confirmed by various characterization techniques. On the basis of the model study, the reaction condition could be extended to the edge-functional...

The thermal properties of vanadium pentoxide (V2O5) thin films have been studied by X-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS). XPS and UPS data demonstrate that V2O5 thin films are gradually reduced by annealing in the ultrahigh vacuum chamber at temperatures up to 400 8C due to the formation of oxygen vacancy. The oxygen defect in the remaining thi...