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Brief description not available

Brief description not available

Brief description not available

A breakthrough in synthetic biology: an evolved DNA polymerase that synthesizes natural and modified RNA, paving the way for advancements in epigenetics, vaccine development, and drug discovery.

Modern biomedical imaging often requires choosing between the deep tissue penetration of magnetic resonance imaging and the high spatial resolution of optical microscopy. Researchers at UC Berkeley have bridged this gap by developing a dual-mode imaging technique that utilizes hyperpolarized diamond particles. These diamond particles are engineered for enhanced hyperpolarizability, a state achieved by simultaneously applying light, a specific sequence of microwaves, and a magnetic field. This process significantly boosts the Carbon-13 signal, allowing for high-contrast magnetic resonance imaging with virtually no background interference from natural body tissues. By attaching targeting ligands to the diamond surfaces, the particles can be directed to specific biological targets. The system then correlates the magnetic resonance data with fluorescent optical images, providing a comprehensive, multi-scale view of the targeted area within a single diagnostic platform.

Traditional optical systems rely on bulky combinations of multiple lenses to correct for chromatic aberration—a phenomenon where different colors of light focus at different points due to material dispersion. UC Berkeley researchers have developed an ultra-broadband, high-efficiency achromatic metalens that overcomes these limitations using a flat, nanostructured surface. This metalens is a subwavelength device that precisely controls the phase, polarization, and wavefront of light. Unlike previous flat-lens designs that were restricted to narrow bandwidths or suffered from low efficiency, this technology provides consistent focusing across a wide spectrum of light and functions independently of the light's polarization state. This advancement enables the creation of high-performance, miniaturized imaging systems that are significantly thinner, lighter, and more cost-effective than conventional refractive optics.