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| 1 | Recent progress in human body energy harvesting for smart bioelectronic system显示文摘From every heartbeat to every footstep, human beings dissipate energy all the time. Researchers are trying to harvest energy from the human body and convert it into electricity, which can be supplied to electronic medical devices closely related to human health. Such an energy recycling form is currently a research hotspot in the fields of energy harvesting and bioelectronics. This review firstly summarizes the distribution and characteristics of three primary energy sources contained in the human body, including thermal energy, chemical energy, and mechanical energy. Afterwards, the applicable energy harvesting technologies and corresponding working mechanisms for different energy sources are introduced. Some typical demos and practical applications of each type of human body energy harvesting technology are also presented. Specifically, the advantages and critical issues of different energy harvesting technologies are summarized, and corresponding promising solutions are also provided. Besides, the interaction strategies between various energy harvesting devices and the human body are summarized from the aspects of wearable and implantable applications. Finally, the concept of a self-powered closed-loop bioelectronic system (SCBS) is put forward for the first time, which organically combines portable electronic devices, implantable electronic medical devices, energy harvesting devices, and the human body. The prospect of symbiosis between the SCBS and the human body is provided. The demands and future development trends of the SCBS are also discussed. | Yang Zou Lin Bo Zhou Li | 2021 | Fundamental Research2021，1，3： | 5 |
| 2 | 热管式半导体热电冷水机参数影响分析与性能优化显示文摘利用热管具有高效的导热能力,而半导体制冷具有无噪音、环保、制冷迅速等独特的优点,提出了一种基于热管散热的半导体热电冷水机结构。基于有限时间热力学理论,考虑包括汤姆逊效应在内的各种内部效应,建立了详细的计算模型。分析了关键运行参数和设计参数对装置最优电流和最优性能的影响,并给出了协调最大制冷率和最大制冷系数的最优参数区间。优化结果表明:当温差为20K、电流为2.5A时,最大制冷率和最大制冷系数分别可达29.49W和1.47,相比于优化前,分别提升了55.3%和47.0%。 | 孟凡凯 陈赵军 徐辰欣 | 2021 | 半导体光电2021，42，5： | 2 |
| 3 | 构建准层状自空穴掺杂SnSe取向薄膜获得优异热电功率因子和输出功率密度显示文摘热电技术可以实现热能与电能的相互转换,其开发利用对于缓解能源危机具有重要意义.近10年来,SnSe因其潜在的高能量转换效率、绿色环保和低成本特性而备受关注.但SnSe的固有载流子浓度低(约10~(17)cm^(-3)),导致其功率因子偏低,从而限制了SnSe基器件的输出功率密度.因此,探索新的载流子浓度优化策略对于SnSe的应用至关重要.此外,与三维块体相比,二维薄膜更易和现代半导体工艺相兼容,在热电微纳米器件的构筑和应用方面具有独特优势.本文报道了一种利用非原位硒化技术,通过电荷转移和自空穴掺杂效应来优化a轴取向SnSe基薄膜的载流子浓度.当硒化时间为20 min时,薄膜载流子浓度可提高至10~(18)cm^(-3)数量级,形成了准层状的自空穴掺杂SnSe基薄膜,其功率因子在600 K时达到了5.9μW cm^(-1)K^(-2).由硒化处理的SnSe基取向薄膜构筑的热电发电机在50和90 K的温差下分别具有约83、838μW cm^(-2)的超高功率密度.非原位硒化技术可以有效提高SnSe基薄膜的载流子浓度,为其他热电材料性能优化提供了一种新策略. | 薛宇利 王晴 高志 钱鑫 王江龙 闫国英 陈明敬 赵立东 王淑芳 李志亮 | 2023 | Science Bulletin2023，68，22： | 0 |
| 4 | 基于热管散热的串联式两级热电制冷器制冷性能综合分析显示文摘针对基于热管散热的串联式两级热电制冷器,建立了有限时间热力学模型。通过热阻分析的方法建立了热电制冷器的一维热阻网络图并给出了冷热端热阻的具体计算方法。以制冷率、制冷系数、热力学完善度和极限制冷温差为性能指标,用数值算例的方法研究了工作电流、热电单元分配比、热电单元横截面积、热电单元长度、热管几何参数(冷凝段长度和管芯厚度)和制冷温差等关键参数对热电制冷器综合性能的影响规律。 | 陈赵军 孟凡凯 徐辰欣 江帆 谢志辉 | 2023 | 热科学与技术2023，22，6： | 0 |
| 5 | Research Advances of Typical Two Dimensional Layered Thermoelectric Materials显示文摘Thermoelectric technologies have caught our intense attention due to their ability of heat conversion into electricity.The considerable efforts have been taken to develop and enhance thermoelectric properties of materials over the past several decades.Recently,twodimensional layered materials are making the promise for potential applications of thermoelectric devices because of the excellent physical and structural properties.Here,a comprehensive coverage about recent progresses in thermoelectric properties of typical two dimensional(2D)layered materials,including the theoretical and experimental results,is provided.Moreover,the potential applications of 2D thermoelectric materials are also involved.These results indicate that the development of 2D thermoelectric materials take a key role in the flexible electronic devices with thermoelectric technologies. | Haihua HUANG Xiaofeng FAN | 2020 | Research and Application of Materials Science2020，2，2： | 0 |
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