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In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers.
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Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>
Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>
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Tiny chip that controls multiple laser beams
17.04.2023
Engineers at the US National Institute of Standards and Technology have developed chip-scale devices to simultaneously control the color, focus, direction of movement, and polarization of multiple beams of laser light. The development is suitable for creating portable sensors and quantum devices.
Traditional optical systems, which allow even a single laser beam to be controlled, represent a large-scale structure the size of a dining table. It houses many lenses, polarizers, mirrors and other devices. To create portable sensors and quantum computers will require miniature chips.
The researchers combined two technologies at the chip level: photonic integrated circuits, using tiny transparent channels and other micro-components for light; and a source of unconventional optics known as the optical metasurface. Such surfaces are made up of glass plates with millions of tiny structures only a few hundred billionths of a meter high that manipulate the properties of light without the need for bulky optics.
The system for forming multiple laser beams (blue arrows) and controlling their polarization consists of three components: an evanescent coupler (EVC), which directs light from one device to another; meta-grid (MG), scattering light; and the metasurface (MS), a small glassy surface studded with millions of pillars that act as lenses.
In a series of experiments, the researchers demonstrated that a single photonic chip did the work of 36 optical components while simultaneously controlling the direction, focus, and polarization (the plane in which a light wave oscillates as it moves) of 12 laser beams, divided into four different colors. They also showed that a tiny chip could direct two beams of different colors to run in parallel. This is necessary to create atomic clocks.
The researchers note that they continue to work on a full-fledged optical system based on the chip. So far, laser light is not yet powerful enough to cool atoms to the ultra-low temperatures required for miniature advanced atomic clocks.
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