Triboelectricity is a well-known fact. The first lesson in the junior high school electrical science is frictional electrification. Static electricity caused by friction in dry environments is often a headache. Since the friction in life is everywhere, how can this annoying problem become the positive energy of love? At the 538th Xiangshan Science Conference with the theme of “Frontier Development of Nano-Energy and Piezoelectrics (Electrical) Electronics†held recently, the reporter learned that friction nanometers have been developed based on the theory of nano-energy and piezoelectric electronics. Generators, so that frictional power generation is no longer an illusion. The world’s smallest generator This friction nano-generator has a mechanical energy conversion efficiency of 50%-80%, and can provide power for tiny electronic devices and nano-robots, making it truly self-driven. Nano-energy refers to energy conversion and energy storage technologies based on nanotechnology and nanomaterials. In fact, as early as April 2007, the "Science" magazine published in the United States introduced the ultrasound-driven DC nano-generator developed by the executive chairman of the conference and researcher Wang Zhonglin from the Beijing Institute of Nano Energy and Systems, Chinese Academy of Sciences. Early in April 2006, Science magazine, which had always been very enthusiastic about new methods and new theories, also reported that Wang Zhonglin’s team converted the mechanical energy for the first time at nanometer (billionths of a meter) scale. Research results into electrical energy. The world’s smallest generator, developed by Wang Zhonglin at the time, skillfully used the semiconductor properties and piezoelectric effects of nanowires: Through external environmental vibrations, whether it is ultrasound, human walking, tidal motion, or even heartbeat (if being If it is implanted inside the human body, the nanowire generates a small amount of resonance, vibration, and deformation due to the kinetic energy generated by the mechanical motion, thereby accumulating charges on the surface, and then the current is output by the electrode plate attached to the nanowire. According to calculations, at that time, the power generation efficiency of such nano-generators could reach 17% to 30%. You know, the actual efficiency of the best solar cells is only about 20%. However, such power generation efficiency is still unsatisfactory. In 2011, by chance, Wang Zhonglin's team found plastic films that were surface-modified with nanostructures. The electrostatic voltage and current generated by the friction between them were several times higher than those generated by piezoelectrics in the past. This discovery made them excited. After more than a year of research, the output power has increased by five orders of magnitude. Through experimental verification of this friction nano-generator, the mechanical energy conversion efficiency is 50%-80%, which is amazing! Because the phenomenon of friction is common and ubiquitous in life, the team invented four modes, which can convert four different states of contact and sliding into electrical energy. The friction nano-generator is composed of a specially designed nano-structured polymer material and a composite material thereof, supplemented with a very small amount of metal electrode material, and has a low cost, a light finished product, and corrosion resistance, and can provide a microelectronic device and a nano-robot. Electricity, to make it truly self-driven. Change your mind to change the sensor When it triggers a friction nanogenerator, it can send a signal, which in turn, if the signal is monitored, it knows what it triggers. In recent years, nanodevices and nano-robots, which are small in size, low in power consumption, and responsive, have been the frontiers of the nano-academic community because they can accomplish tasks that are difficult for ordinary humans such as micro-medical and remote sensing. But for many researchers around the world, the biggest problem is that no matter how small a nanodevice is, it still has to rely on a huge external power supply. Needless to say, due to the fact that conventional batteries contain toxic substances, some medical nano-micro devices cannot be implanted into the human body. If it is not possible to synchronize the miniaturization of devices and power supplies, let nanodevices enter the microcosm, perhaps only on paper. Now, with the advent of nano-generators, this prospect has once again become brighter. Charles Leber, a professor of chemistry at Harvard University, believes that this invention "proposed solutions" to the key issue of how to provide power to nanodevices. Except for nanometer or microelectronic devices that are completely wireless, implantable, long-term, or even life-long careless, each person's clothes, shoes, etc. in the future can be placed on such a power source as portable electronic devices carried on the body ( Including MP3, mobile phones, etc.) provide energy. This smart wearable device may become more and more popular. Another application of nano-energy is self-driven sensing system, which solves the micro-power problem that restricts the development of the Internet of Things, so as to achieve stable, reliable, long-term and low-cost operation of the wireless sensor under unattended care. Sensors designed according to another idea can also provide solutions for medical care and safety. Wang Zhonglin said that if it triggers the friction of a nanogenerator, it can send a signal. If the generator collects the current, then if I monitor the signal, it knows what triggered it. He used this principle to design a small sensor attached to the chest and throat to measure our blood pressure and blood flow in the body. This idea can also be applied to security. The sensor is mounted on the door handle and if someone presses it, a signal will be generated for immediate alarm. The same principle can also be installed on the ground, in the house, and it does not turn on when no one enters, but once someone steps on it, it can generate a signal and start monitoring. This application not only saves energy but also saves data. The great energy of nano energy The flow of seawater stays up all day and night, providing a stable working environment for frictional nanogenerators. According to rough calculations, the water equivalent to the Three Gorges can be generated by using 5 meters of water at a distance of 200 kilometers by 200 kilometers. Nano-energy can solve not only the problems of these tiny systems, but the huge energy it generates can induce energy revolutions. Using the frictional effect of seawater waves, the researchers designed and developed hydrodynamic friction nano-generators, which are placed into a network and placed into the ocean, making the irregular movement of seawater into a constant source of electricity. According to experimental calculations, a megawatt-level electrical output can be generated per square kilometer of sea surface. Wang Zhonglin's team used the frictional electrification phenomenon at the solid-liquid interface to develop a "hydro-energy nano-generator" that can be used to collect kinetic energy from rivers, raindrops, and waves. Through the combined use of the four basic modes of friction nano-generators, this type of generator can efficiently recover kinetic energy resources in the ocean, including up and down fluctuations of water, waves, currents, and sea water tapping. He said that "hydro-friction nano-generators" for the first time achieved solid-liquid interface friction power generation. In the past, it was generally considered that frictional electrification was only possible under dry conditions; this technology also achieved the simultaneous collection of the kinetic energy of water droplets and waves. Academician Wang Zhonglin said that China has a vast sea area and seawater flows day and night, which provides a stable working environment for frictional nanogenerators. Relying on the ocean, this "blue energy" will surpass the "green energy" and has broad market prospects. According to rough calculations, the equivalent of the Three Gorges' total power can be generated by using 5 meters of water in a sea area of ​​200 kilometers and 200 kilometers. At the same time, it is also possible to generate electricity by using a trample and by using a car tire to rub the ground. For example, the electricity generated by the one-day trampling of Beijing's Xidan commercial district is equivalent to the electricity generated by the combustion of about 2.5 tons of coal. Similarly, the use of nano-generators can also use the friction between the car wheels and the ground to waste energy before recycling. According to reports, Wang Xudong, an associate professor of materials and engineering at the University of Wisconsin-Madison, and his doctoral students conducted a one-year study. They believe that nanogenerators can obtain electrical energy from changes in the potential difference between the road surface and the vehicle wheels. After research, it has been determined that the efficiency of this type of frictional power generation is closely related to the weight and speed of the car. Depending on the vehicle and its driving conditions, there will be a corresponding change in power generation, but overall it is estimated that this device will increase the vehicle's fuel efficiency by at least 10%. The reporter learned from the Xiangshan meeting that the current research team based on scientists in China has accumulated the foundation for the basic theory of nanogenerators and piezoelectric (optical) electronics, controllable preparation of materials, and design of new electronic devices. Obtained a batch of innovative research results with independent intellectual property rights, and related research is at the leading level in the world. In September last year, Thomson Reuters Group released the 2015 annual paper cited the Guiguan Award winning list, Wang Zhonglin ranked among them. We look forward to the near future, we can benefit from the energy revolution triggered by this study, use cleaner and more sustainable energy, and enjoy the convenience that this technology brings to us. (Text, reporter, Xue Xueqing)
The OEM Peristaltic Pump with Compact structure design, simple installation design, and good working performance, widely used in various liquid processing equipment, Customize mounting brackets available. Ideal solution for various liquid transfer applications. Oem Peristaltic Pump,12V Perisatltic Pump,Milking Vending Machine Pump,Large Transfer Pump Baoding Chuangrui Precision Pump Co., Ltd. , https://www.crperistalticpump.com
OEM Peristaltic Pump is compact and easy to integrate into your equipment.
Typical application: Chemical industry/ packing machine/printing /fine chemical, laboratory, food canning, chemical reagent filling, Dispense juice, chocolate,
etc.- Refrigeration / Condensate Removal- Analytical / Fluid Transfer, Wastes- Commercial Exercise Eqpt. / Lubrication- Grease Trap Control /etc