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6. Controllable electrons in graphene provide new opportunities for developing potential electronic devices
Scientists have created tunable artificial atoms in graphene for the first time. The research results indicate that the technology used to control graphene electrons is feasible, controllable, and reversible. The energy state of electrons is adjustable. This tunability opens up new avenues for studying the unique physical electronic behavior in graphene. In addition, it also provides a method that promotes future electronic technology, communication, and sensors through the use of graphene as an important device.
A team led by researchers at Rutgers University has developed a technology that can stably maintain and control the modification of local charge states in graphene. The team further demonstrated that the quasi boundary state at the vacancy is adjustable under external electric field applications. The capture mechanism can be turned on and off, providing a new paradigm for controlling and guiding electrons in graphene.
7. Graphene nanoribbons can achieve ultra sensitive quality detection
The research team from the University of Science and Technology of China discovered the connection between nanomechanical motion and conductivity through single electron transistors (SET) using graphene nanorods suspended in grooves.
Guo Guoping and his team made some very significant findings when measuring current through ribbons. When adjusting the frequency of the AC gate voltage applied to the end of the ribbon, they found that mechanical motion is coupled with the flow of individual electrons in and out of the band; By driving the ribbon at higher power, the system enters a nonlinear state. From this perspective, hemoglobin and other typical proteins have mass on this scale.
They also provide a way to explore nanoscale phenomena beyond existing technological solutions, which can reveal a range of issues in various fields.
8. Graphene sponge additives can be used to enhance the performance of lithium-ion batteries
Researcher Qian Cheng from NEC Corporation in Japan has developed a porous graphene sponge additive, also known as MagicG, which can be used as the anode and cathode of lithium-ion batteries to improve their rate and power performance. Although lithium-ion batteries have shown some excellent performance after years of research and development, they are still affected by low power consumption due to poor charging and discharging capabilities and high rate performance.
Qian Cheng developed a honeycomb shaped porous graphene sponge, also known as Magic G (MG), which has high conductivity, high specific surface area, and high electrolyte absorption capacity. Sponge has been incorporated into the anode and cathode of lithium-ion batteries as an additive to improve rate capability and high rate cycling.
Due to the electrode characteristics that arise after the introduction of additives, lithium-ion batteries used in electric vehicles are essential. Qian Cheng also looks forward to further optimizing the future structure to achieve higher performance.
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