Professor He Qiang, key laboratory of Microsystems and Microstructure Manufacturing of Ministry of Education, Harbin Institute of Technology, successfully developed the world's first twin-engine artificial micro-nano machine, which is expected to be widely used in biomedicine, anti-tumor drugs and environmental testing. The result, titled "Double Bubble Driven Kayak," was published in the latest issue of the American Chemical Society and was selected as the cover paper for the issue. The chemically driven micro/nano machine is a micro-nano system capable of converting chemical energy in the surrounding environment into its own mechanical motion. It is a hot research topic in the fields of materials, robotics, physics, chemistry, and biomedicine. How do you simulate a two-engine power mode that is ubiquitous in nature, like a penguin swimming in the water, and then artificially synthesize a dual-engine-driven micro-nano machine? He Qiang team prepared a hollow dumbbell-like hollow manganese dioxide colloidal particle by chemical hydrothermal synthesis, which can catalyze the decomposition of hydrogen peroxide fuel and generate a pair of oxygen bubbles at the waist of the particle, realizing self-driven at low Reynolds number. motion. Because this movement is similar to a single-handed kayak with a single paddle and two leaves, it is aptly called a "colloidal kayak." Due to the special structure of the dumbbell shape, the reaction force generated by the growth and release of double bubbles has a net force on the tangential axis (long axis) and the radial axis (short axis) of the "colloidal kayak". Movement provides the driving force, while the latter affects its direction of motion. Through the statistical analysis of the synchronous or non-synchronous growth and frequency change of double bubbles, and the simulation of the surrounding fluid field changes during bubble growth and release, He Qiang team also established a physical model based on bubble growth kinetics and particle motion equations. , clarified its movement mechanism. The observations show that the double bubble drive has higher maneuverability than the single bubble drive mode. Experts pointed out that this latest achievement has potential for exploring the design methods of dual-engine micro-nano machines, mimicking the magical natural system functions, as well as the identification of cancer cells, the delivery of anti-tumor drugs, and nano-surgery. Practical value. (Reporter Yi Xiaofeng) Source: Health News
Red light therapy (RLT) is a treatment that may aid in the healing of skin, muscle tissue, and other body components. It exposes you to red or near-infrared light at modest intensities. Infrared light is a sort of energy that your eyes cannot see but which your body perceives as heat. Red light is comparable to infrared light, however it is visible.
Hair loss is a common occurrence. In one research, men and women with androgenetic alopecia (a hereditary condition that causes hair loss) gained thicker hair after using an at-home RLT device for 24 weeks. The outcomes were not the same for those who utilized a bogus RLT gadget in the trial.
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What's red light therapy? Red light therapy before and after
Low-level laser treatment (LLLT), low-power laser therapy (LPLT), and photobiomodulation are all terms for red light therapy (PBM).
What Is Red Light Therapy and How Does It Work?
Red light treatment involves exposing your skin to a red-light bulb, gadget, or laser. Mitochondria, also known as the "power generators" of your cells, absorb it and use it to produce additional energy. This, according to some scientists, helps cells repair themselves and grow healthier. This promotes skin and muscular tissue repair.
The skin is not injured or burned by red light treatment since it employs very low amounts of heat. It is not the same sort of light used in tanning salons, and it does not expose your skin to UV rays that are harmful to your skin.
What Is It Used For?
Red light treatment has been studied for a long time. However, there aren't many research on it, and no one knows if it's better than other sorts of healing treatments. The use of red light therapy may be beneficial in the following situations:
Dementia. People with dementia who received near-infrared light treatment on their heads and via their nostrils on a daily basis for 12 weeks had improved memory, slept better, and were less irritable.
Pain in the teeth. People with temporomandibular dysfunction syndrome (TMD) experienced decreased discomfort, clicking, and jaw soreness after receiving red light treatment, according to another small study.
Osteoarthritis. According to one research, red and infrared light treatment reduced osteoarthritis-related pain by more than half.
Tendinitis. RLT appears to reduce inflammation and discomfort in persons with Achilles tendonitis, according to a small trial of seven participants.
Wrinkles and other symptoms of aging and damage to the skin. RLT has been shown in studies to aid with wrinkles and skin smoothing. RLT can also assist with acne scars, burns, and sun damage indications.
Even though experts aren't clear how or why red light treatment works, it's usually thought to be safe. There are also no hard and fast guidelines on how much light to use. Too much light can harm skin tissue, while too little can make it less effective.
What Is Red Light Therapy and Where Can You Get It?
At most cases, it's done in a doctor's office. Some salons and dentistry clinics, however, do it as well. You may also purchase a red light treatment gadget on your own. Side effects and injuries are more likely to occur with salon and at-home treatments. If you're considering red light treatment, see your doctor first.
:2018-11-21