Nanosensors have broad application prospects

Nano Senser has a wide range of applications in aerospace, machinery, instrumentation, automotive manufacturing, oil and gas exploration, electronic engineering, and medical device industries. And it is used in medical inspection equipment, the diagnostic efficiency of inspection equipment will far exceed the equipment using traditional sensors.

Breath Analyzer Two scientists at the Nanomaterials and Sensors Research Center at Stony Brook University in the United States recently developed a new type of breath analyzer based on nanosensors. Diabetic patients simply need to point their mouth at the instrument to exhale, and the instrument can display the patient's blood glucose level. Therefore, the analyzer can save the cumbersome procedures of blood tests for blood glucose, and allows doctors to quickly learn the patient's blood glucose conditions.

Tuberculosis site tester According to the World Health Organization, in recent years, the number of people who die of tuberculosis every year is about 2 million. For tuberculosis patients, early diagnosis is very important. Because once the patient has hemoptysis and empty holes in the lungs, the condition is very serious and it can be very difficult to treat. However, the diagnostic technology for tuberculosis currently used is a “fungus culture method” that has been in use for decades. This test method has a higher chance of obtaining false results such as false negatives. Therefore, it is imperative to change the existing diagnostic method for tuberculosis. Recently, the famous medical research institution with more than one hundred years of history and the London Institute of Hygiene and Tropical Diseases in the United Kingdom have used newly developed nanomaterials to produce a new type of nanosensor that can detect whether or not patients have tuberculosis on the spot.

The researcher of the institute said that the POCT instrument made of this kind of nanometer sensor has a very low cost and is very suitable for promotion in the high incidence areas of tuberculosis in third world countries, especially in Southeast Asia.

Cancer Diagnosis Nanosensors In the past 10 years, the incidence of cancer has risen rapidly in both developed and developing countries, and has become a major disease that seriously threatens human health. However, most cancers are not easily detected as early symptoms as other diseases. In fact, many cancer patients are often advanced cancers when they become unwell and have been diagnosed.

According to foreign media reports, researchers at Stanford University in the United States have synthesized a new material called "carbon nanotubes". They label the carbon nanotubes with fluorescent markers and inject them into cancer experimental animals. They are then examined by Raman spectroscopy. , Can accurately diagnose the location and size of the tumor.

Instead, a nanosensor developed by researchers at the University of Sheffield in the United Kingdom allows doctors to use a cotton ball to apply a small amount of oral fluid from a subject to the nanosensor to determine whether the subject has oral cancer.

Harvard researchers link nanosensors to antibody receptors, allowing them to accurately detect tumor markers in the patient's blood.

In addition, a new type of nanosensor developed by Dr. Chen Xiaoyuan and its assistants, scientists of the United States and China, can use MRI/PET imaging and diagnostic equipment to use radioactive iodine-labeled manganese/iron nano magnetic particles. It is injected into experimental animals with cancer and examined by MRI/PET to immediately determine whether cancer cells have metastasized through the lymphatic system. Relevant experts believe that the radioactive iodine-labeled nanoparticles have broad application prospects in the diagnosis of malignant tumors.

DNA-coated nano-film gene therapy has always been a promising vision for the medical community. Because of correcting the patient's genetic defects, many diseases such as sickle cell anemia, hemophilia, lupus erythematosus, and rheumatoid arthritis can be fundamentally cured. Since gene therapy involves DNA therapy, nanotechnology is often required to participate.

Researchers at the University of Wisconsin in the United States have developed a new nanofilm. It consists of DNA and water-soluble polymers. After it is implanted in experimental animals, DNA is slowly released and enters the appropriate position for therapeutic action.