Flexible, wearable terahertz scanner available
Introduction: The terahertz ray corresponds to a frequency range between the infrared and the microwave of the electromagnetic spectrum and can penetrate almost all kinds of materials without causing damage. Therefore, the terahertz camera has a wide range of applications in non-invasive high-resolution imaging. It can detect hidden weapons, identify explosives, and inspect machine parts for defects.
On the 14th, Yukio Kawano of the Tokyo Institute of Technology in Japan and colleagues used carbon nanotubes to develop the first movable, bendable and wearable terahertz scanner capable of performing three-dimensional curling on the human body. Imaging detection. The relevant research details were published in the online edition of Nature Optical.
The terahertz ray corresponds to a frequency range between the infrared and microwave of the electromagnetic spectrum and can penetrate almost any material without causing damage. Therefore, the terahertz camera has a wide range of potential applications in non-invasive high-resolution imaging and can be detected. Hidden weapons, identification of explosives, and inspection of defects in mechanical components.
However, traditional terahertz imaging technology is made of inflexible materials and is only suitable for detecting flat samples. It is difficult to scan most three-dimensional coiled structures. Many THz scanners used at security screening sites need to be rotated 360° to capture all angles of the human body. This makes the security system too bulky.
Kawano and colleagues used the carbon nanotube film design to develop the first bendable terahertz imaging device that can detect all frequencies in the range of 0.14 to 39 terahertz at room temperature and can be wrapped for easy carrying. Using this imager, they successfully detected paper scraps hidden under multiple sheets of paper and metal coils in a stack of disks, and found a hidden piece of chewing gum inside the plastic box. They also identified metal impurities in the plastic bottle and tiny cracks in the syringe. The above results show that the new terahertz scanner can be used in industrial enterprises for rapid and multi-angle detection of non-planar products such as plastic bottles and pharmaceuticals.
In addition, they developed a wearable scanner and successfully detected the terahertz radiation emitted by human hands. Kawano believes that imaging a hand without external terahertz rays is an important step for medical use of the terahertz scanner. It can be used to detect various health problems such as cancer cells, sweat glands, and dental cavities in the future and monitor itself in real time. Daily health status.
Kawano stated that they will then integrate these new terahertz imagers and signal recognition circuits with wireless communication devices on a single chip to develop a high-speed terahertz monitoring system. After that, the development of real-time medical monitoring equipment will start.
Sand Making Machine used to produce artificial sand & plaster sand; sand manufactured by crushing,The sand making machine is specially designed for manufacturing artificial sand from the grit. It is a better utilization of the large size of rock materials and stones through rock on rock metal machine mechanism roughly as follows-
Sand and gravel aggregate play an important role in making up building materials like concrete, which makes the separation and screening process extremely necessary.
Sand making production line is also called sand and stone production line. And the sand production line is a kind of special equipment for producing construction sand and stone. The sand making machine for sale is often needed in many fields, and this processing line can meet the requirements of simultaneous production of stone and artificial sand.
The sand manufacturing plant can crush rock, sand, gravel and other materials into various size in accord with the requirement of construction sand. Sand made by sand production line has uniform size and high compression strength, and this kind of sand is much more in line with the construction requirements than the sand processed by the ordinary hammer sand crusher machine.
Three Systems of Sand Plant Equipment:
sand plant mainly has three systems. Here is their basic information:
Firstly, the feeding system. The system send raw material to sand crusher and sand screening machine. According to crush and screen process, feeding equipment includes vibrating feeder and other types of feeding machines.
Secondly, the crushing system. The system is the heart of the whole set of sand processing equipment. The work of sand crushing plant system is to crush different varieties of ore raw materials into the required size of the finished product. A complete stone production line includes many crushers. These crushing machines have different functions, and complete the crushing operation together.
Thirdly, the screening and transporting system. The system screens the ore which are crushed by crushing machinery. In the compound sand and stone production line, sand and stone need to be separated, and the separated material needs to be transported to the respective site. The sand screening equipment used in this process is generally a Linear Vibrating Screen or other sand sieve machine.
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