Innovations in biotechnology instrumentation and materials science are rapidly progressing. A new confocal squared spinning-disk microscopy technique delivers high-fidelity super-resolution imaging of tissues, enhancing pathological examination. Low-cost liquid optical waveguides promise improved performance and affordability for augmented reality systems. Organic diradicals hosting bright excitons open avenues for optical spin state control relevant to quantum information. Flexible eddy current arrays achieve nondestructive crack detection in steel structures, improving industrial safety assessments. Such advances broaden applications in imaging, diagnostics, and materials development.