Evaluation of antifungal activity of visible light-activated doped TiO nanoparticles.

Titanium dioxide (TiO) is a well-known material for its biomedical applications, among which its implementation as a photosensitizer in photodynamic therapy has attracted considerable interest due to its photocatalytic properties, biocompatibility, high chemical stability, and low toxicity. However, the photoactivation of TiO requires ultraviolet light, which may lead to cell mutation and consequently cancer. To address these challenges, recent research has focused on the incorporation of metal dopants into the TiO lattice to shift the band gap to lower energies by introducing allowed energy states within the band gap, thus ensuring the harnessing of visible light.

Improved spatial speckle contrast model for tissue blood flow imaging: effects of spatial correlation among neighboring camera pixels.

Significance: Speckle contrast analysis is the basis of laser speckle imaging (LSI), a simple, inexpensive, noninvasive technique used in various fields of medicine and engineering. A common application of LSI is the measurement of tissue blood flow. Accurate measurement of speckle contrast is essential to correctly measure blood flow.

Organic light emitting diode for in vitro antimicrobial photodynamic therapy of Candida strains.

Organic light emitting diodes (OLEDs) are very attractive light sources because they are large area emitters, and can in principle be deposited on flexible substrates. These features make them suitable for ambulatory photodynamic therapy (PDT). A few reports of in vitro or in vivo OLED based PDT studies for cancer or microbial inhibition are published but to our best knowledge, none against yeasts.

Visualization of deep blood vessels using principal component analysis based laser speckle imaging.

Visualization of blood vessels is a fundamental task in the evaluation of the health and biological integrity of tissue. Laser speckle contrast imaging (LSCI) is a non-invasive technique to determine the blood flow in superficial or exposed vasculature. However, the high scattering of biological tissue hinders the visualization of those structures.