According to foreign media reports, a team of researchers at Pohang University of Science and Technology in South Korea has developed a near-infrared (NIR) silicon photodiode, which is one-third more sensitive than existing photodiodes. Existing near-infrared photodiodes are usually made of chemical materials and require a separate cooling device, which is difficult to integrate. A group of researchers led by Professor Chang-Ki Baek of Pohang University of Science and Technology used hourglass silicon nanowires to increase the absorption of infrared light by silicon. Located above the nanowire, the inverted nanocone prolongs the residence time of near-infrared-shortwave infrared (SWIR) photons by generating echo wall resonance, while the nanocone below can re-absorb incident light from nearby nanowires due to low reflectivity . Compared with the existing flat silicon photoelectron diodes, the nanowire's response to near-infrared light has increased by 29% at a wavelength of 1000 nm. The researchers used the newly developed photodiode in the mobile heart rate measurement system and found that the new photodiode has higher sensitivity and an error rate of less than 1% compared to the existing photodiode. Silicon for manufacturing photodiodes can be mass-produced at low cost. Potential applications include lidar, medical lasers, night vision, and image sensors for autonomous vehicles. (Author: Yuqiu Yun) Petroleum Instruments Professional sales of oilfield drilling and production instruments. The main products include standpipe pressure gauge series, mud pressure gauge series, tong torque series, index weight meter series, electronic index weight meter series, sensor series and other products. Our company is one of the main suppliers of domestic petroleum special instruments and meters. Provide supporting services for oil production fracturing, cementing equipment and metallurgy, chemical, food, pharmaceutical and other industries. Products are sold all over the world and major oil fields. A relatively stable marketing network has gradually formed in China. Our company's products are not only widely sold in the domestic market, but also have entered the international market. Since 2011, our products have been exported to foreign countries. Currently, our export countries include Canada, the United States, Mexico, Australia, New Zealand, Russia, Singapore, Dubai, Iran, India and other countries. A good sales network has been established abroad. Petroleum Instruments,Testing Instruments And Laboratory Instruments,Oil And Gas Instrument And Meter,Drilling Parameters Instrument Rugao Yaou Import & Export Trade Co., Ltd , https://www.ntyaous.com