Imagine a microscope that could be made smaller and integrated with a chip to provide real-time views inside of living cells. Wouldn't it be wonderful if this tiny microscope could be integrated into electronics like today's smartphone cameras? What if medical professionals were able to utilize this technology to make diagnoses in far-off places without the need for expensive, complicated, and delicate analytical machinery? To achieve these objectives, the EU-funded ChipScope project has made notable strides.
Researchers from the EU-funded ChipScope project are now developing a novel strategy to enhance light microscopy. A news report on the project's website says: "In classical light microscopy, the area of the sample being analyzed is illuminated simultaneously, and light scattered from each point is collected with an area-selective detector (such as the sensor of the human eye or a camera). In Chipscope's idea, structured light sources with tiny and individually addressable elements are used."
The project news also states: "The specimen is located near the top of this light source. Whenever a single emitter is activated, the propagation of light depends on the spatial structure of the specimen, which is very similar to so-called shadow imaging in the macroscopic world. When sensed by a detector An image is generated when the entire sample space is scanned by activating one light element at a time with the total amount of light in the sample area. If the light elements are in the nanometer range in size and the sample is in close contact with them, the optical near field is correlated and Chip-based setups may enable super-resolution imaging."
The ChipScope project brings together several areas of expertise to accomplish its alternative approach to optical super-resolution. "Structured light sources are realized by miniature light-emitting diodes (LEDs) developed at the Technical University of Braunschweig, Germany," the news adds. It highlights that "there are currently no commercial structured LED arrays that address Pixels down to the sub-micron level. This task is undertaken by the Technical University of Brunswick within the framework of the ChipScope project.”
The concept also involves another component: "a single-photon avalanche detector (SPAD), which can detect very low light intensities, down to a single photon." The news states: "For the first time, those detectors were integrated into a ChipScope microscope prototype for testing. have been carried out and showed encouraging results.” It added: “Furthermore, a method of bringing the specimen into the vicinity of a structured light source is essential for proper operation of the microscope. A well-established technique to achieve this is to utilize A microfluidic channel in which a fine channel system is structured into a polymer matrix. Using a high precision pump, a tiny amount of liquid is driven through the system and the sample is brought to the target location. This part of the microscope assembly was contributed by the Austrian Institute of Technology AIT ."
