Publications by authors named "D L John"
Wide field of view and light weight optics are critical for advanced eyewear, with applications in augmented/virtual reality and night vision. Conventional refractive lenses are often stacked to correct aberrations at a wide field of view, leading to limited performance and increased size and weight. In particular, simultaneously achieving a wide field of view and large aperture for light collection is desirable but challenging to realize in a compact form-factor.
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- GbPC-CT is gaining popularity for its ability to enhance soft-tissue contrast in imaging, but it struggles with resolution issues, especially at low doses commonly used in clinical settings.
- The study introduces a self-supervised deep learning model called Noise2Inverse, which helps enhance image quality while reducing the required radiation dose.
- The results show that Noise2Inverse outperforms traditional denoising methods, indicating that deep learning can improve the resolution of gbPC-CT images, making it a more viable option for medical applications.
Metal-organic frameworks (MOFs) are porous crystalline materials with a metal ion coordinated to a ligand molecule. Recently, MOFs are being explored extensively for energy harvesting triboelectrification. However, the majority of MOFs are brittle and hard to grow, thus leading to poor device stability and flexibility.
View Article and Find Full Text PDFThis work looks into how well Cu-doped zinc oxide works as a photocatalyst when exposed to visible light to break down sulphanilamide. The synthesized samples were characterized by XRD and then FTIR techniques for structural besides compositional analysis. The approximate value of bandgap found out by NBE values of PL spectra showed a decrease in bandgap with doping.
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