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WASHINGTON — Researchers have developed a new method to flexibly create a variety of needle-shaped laser beams. This long, narrow beam can be used to enhance optical coherence tomography (OCT), a non-invasive and versatile imaging tool used for scientific research and various types of clinical diagnosis. “Needle-shaped laser beams can effectively expand the depth of focus of OCT systems, improving lateral resolution, signal-to-noise ratio, contrast, and image quality over a long depth range,” said study team leader Adam de la Zerda of the Stanford University School of Medicine. . “However, before now, the application of certain needle-shaped beams was difficult due to the lack of a common and flexible generation method.” In Optica, the Optica Publishing Group’s journal for high-impact research, researchers describe their new platform for creating needle-shaped beams of different lengths and diameters. It can be used to create different types of beams suc...

By mimicking the features of living systems, self-regulating lasers can produce new materials for sensing, computing, light sources and displays. While many artificial materials have advanced properties, they still have a long way to go to incorporate the versatility and functionality of living materials that can adapt to their situation. Our laser systems can reconfigure and work together, enabling the first step to emulate the ever-evolving relationship between structure and functionality that is typical of living materials. Professor Riccardo Sapienza For example, in the human body, bones and muscles are constantly rearranging their structure and composition to better support changes in weight and activity levels. Now, researchers from Imperial College London and University College London have demonstrated the first spontaneously self-organizing laser device, which can reconfigure when conditions change. The innovation, reported in Nature Physics, will help enable the development o...

The purchase price for the clinic is believed to be less than $30 million, ranging from under $300,000 to over $1 million, depending on the size and location of the clinic. The settlement figures are far from the investments sunk into the business by some franchisees. This is a far cry from the $80 million compensation demanded by the 52 franchised clinics in March last year when they joined forces and filed a 140-page letter of dispute alleging that LCA had gouged them for equipment and supplies costs, while forcing them to take aggressive action. discounts that make it difficult for them to cover their costs and condition customers to expect discounts. ‘It was despair before losing everything’ Mediation for unhappy franchisees failed in May last year. A second mediation attempt was held earlier this year, and a settlement was agreed earlier this month. “It wasn’t an option to finish, it was despair before losing everything,” said one franchisee. ...