Researchers have discovered that individuals with a specific HLA type can mount a strong killer T cell response to COVID-19 due to cross-reactivity with seasonal coronaviruses. This finding may lead to the development of new vaccines targeting this immune response.
A team developed a new optical imaging method that can quantify optical properties of strongly turbid media at high-speed (e.g., kHz) capabilities. The halftone spatial frequency domain imaging technique projects sinusoidal light patterns onto the sample and collects reflectance images, increasing the measurement speed by approximately...
Researchers have proposed a new method for controlling the polarization of cylindrical vector beams (CVBs) using a metal-dielectric-metal metasurface. This enables independent modulation of the left- and right-handed circularly polarized components, allowing for efficient multiplexing and demultiplexing of CVBs.
Scientists observe increased ring-like fringes with higher optical-path-difference, outperforming equal-inclination interference. The ASD interference exhibits improved sensitivity and accuracy for measuring small displacements and refractive index changes.
Recent advancements in machine learning and neural networks enable real-time computer-generated holograms, overcoming data transmission challenges. Larger spatial light modulators and improved rendering hardware are also bringing holographic projection systems closer to consumer market.
Researchers developed a new fluorescence lifetime imaging (FLIM) technique to study DNA compaction and gene activities in live cells. The method enables fine measurements of DNA compaction, revealing differences in compaction between gene-rich and gene-poor chromatin domains.
A study by Kanazawa University researchers found that the chemokine CCL3 plays a significant role in inducing inflammation as nonalcoholic fatty liver disease develops. The presence of CCL3 increased liver macrophage accumulation, leading to liver inflammation and scarring.
Researchers discover that lipid droplets can be used as endogenous intracellular microlenses to enhance fluorescence imaging in living cells. This technique reduces the required excitation power by up to 73% and enables efficient detection of fluorescent signals from extracellular environments.
Researchers have developed a new laser speckle imaging technique that can monitor blood flow velocity in thick tissue without the need for surgical windows or optical clearing. This non-invasive method uses transmission detection to improve signal-to-background ratio and enables individual-vessel resolution in human subjects.