|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Hybrid graphene metasurfaces for highspeed mid-infrared light modulation and single-pixel imaging显示文摘During the past decades,major advances have been made in both the generation and detection of infrared light;however,its efficient wavefront manipulation and information processing still encounter great challenges.Efficient and fast optoelectronic modulators and spatial light modulators are required for mid-infrared imaging,sensing,security screening,communication and navigation,to name a few.However,their development remains elusive,and prevailing methods reported so far have suffered from drawbacks that significantly limit their practical applications.In this study,by leveraging graphene and metasurfaces,we demonstrate a high-performance free-space mid-infrared modulator operating at gigahertz speeds,low gate voltage and room temperature.We further pixelate the hybrid graphene metasurface to form a prototype spatial light modulator for high frame rate single-pixel imaging,suggesting orders of magnitude improvement over conventional liquid crystal or micromirror-based spatial light modulators.This work opens up the possibility of exploring wavefront engineering for infrared technologies for which fast temporal and spatial modulations are indispensable. | Beibei Zeng Zhiqin Huang Akhilesh Singh Yu Yao Abul K.Azad Aditya D.Mohite Antoinette J.Taylor David R.Smith Hou-Tong Chen | 2018 | Light(Science & Applications)2018，7，1： | 13 |
| 2 | Latest development of double perovskite electrode materials for solid oxide fuel cells:a review显示文摘Recently,the development and fabrication of electrode component of the solid oxide fuel cell(SOFC)have gained a significant importance,especially after the advent of electrode supported SOFCs.The function of the electrode involves the facilitation of fuel gas diffusion,oxidation of the fuel,transport of electrons,and transport of the byproduct of the electrochemical reaction.Impressive progress has been made in the development of alternative electrode materials with mixed conducting properties and a few of the other composite cermets.During the operation of a SOFC,it is necessary to avoid carburization and sulfidation problems.The present review focuses on the various aspects pertaining to a potential electrode material,the double perovskite,as an anode and cathode in the SOFC.More than 150 SOFCs electrode compositions which had been investigated in the literature have been analyzed.An evaluation has been performed in terms of phase,structure,diffraction pattern,electrical conductivity,and power density.Various methods adopted to determine the quality of electrode component have been provided in detail.This review comprises the literature values to suggest possible direction for future research. | Shammya AFROZE AfizulHakem KARIM Quentin CHEOK Sten ERIKSSON Abul K.AZAD | 2019 | Frontiers in Energy2019，13，4： | 5 |
| 3 | 从光子晶体效应到表面等离子波的实时演变显示文摘文章报道了激光诱导太赫兹表面等离子谐振效应。采用激光抽运-太赫兹波探测技术,实时改变单晶硅中的载流子浓度,使其介电特性从类绝缘体演变为类金属导体,以支持表面等离子谐振效应,进而实现太赫兹波在周期性亚波长单晶硅孔阵列中的实时可控制谐振增强传输。同时还通过实验观测到太赫兹波从光子晶体效应到表面等离子波的实时演变。文章作者采用Fano模型对实验结果进行模拟分析,获得了与实验数据一致的理论拟合。 | 韩家广 Abul K.Azad 张伟力 许景周 陈坚 张希成 | 2007 | 物理2007，36，7： | 2 |
| 4 | Biochar characterization of invasive Pennisetum purpureum grass:effect of pyrolysis temperature显示文摘Pennisetum purpureum is one of the most invasive perennial grasses of the Poaceae family,which are abundant in south-east Asia including Brunei Darussalam.The pyrolysis process at a slow heating rate proved to be highly promising for biochar production.The production and characterization of different Pennisetum purpureum biochars have been investigated at the pyrolysis temperatures of 400℃,500℃and 600℃with a heating and nitrogen flow rate of 5℃/min and 0.5 L/min,respec-tively.The observed higher heating values were 22.18 MJ/kg,23.02 MJ/kg,23.75 MJ/kg,and the alkaline pH were 9.10,9.86,10.17 for the biochar at 400℃,500℃,600℃temperatures,respectively.The water holding capacity was one hundred percent for all biochars and continued to increase for higher pyrolysis temperature.SEM images show that the porosity of the biochars has been enhanced with increased temperatures due to the rearrangement of crystallinity and aromaticity.On the other hand,the yields of biochar have been decreased from 35.13%to 23.02%for the increase of pyrolysis temperature from 400℃to 600℃.Energy dispersive X-ray analysis shows that the O/C atomic ratios were 0.15,0.08 and 0.06 for the biochar of 400,500 and 600℃which validates the improvement in heating values.FT-IR analysis revealed that the available functional groups in the biochars were C-O,C=C,and C-H.Thermogravimetric analysis(TGA)under pyrolysis condi-tion showed residue of 46.56%,51.13%and 55.67%from the biochar at 400,500,and 600℃,respectively.The derivative thermogravimetry(DTG)graph indicates that the degradation rate is higher for 400℃biochar than the 600℃biochar. | Md Sumon Reza Shammya Afroze Muhammad S.A.Bakar Rahman Saidur Navid Aslfattahi Juntakan Taweekun Abul K.Azad | 2020 | Biochar2020，2，2： | 1 |
| 5 | Achievements and trends of solid oxide fuel cells in clean energy field: a perspective review显示文摘The main concerns in the world today,especially in the energy field,are subjected to clean,efficient,and durable sources of energy.These three aspects are the main goals that scientist are paying attention to.However,the various types of energy resources include fossil and sustainable ones,but still some challenges are chasing these kinds from energy conversion,storage,and efficiency.Hence,the most reliable and considered energy resource nowadays is the utilized one which is as highly efficient,clean,and everlasting as possible.So,in this review,an attempt is made to highlight one of the promising types as a clean and efficient energy resource.Solid oxide fuel cell(SOFC)is the most efficient type of the fuel cell types involved with hydrogen and hydrocarbon-based fuels,especially when it works with combined heat and power(CHP).The importance of this type is due to its nature of work as conversion tool from chemical to electrical for generation of power without noise,pollution,and can be safely handled. | Abdalla M.ABDALLA Shahzad HOSSAIN Pg MohdIskandr PETRA Mostafa GHASEMI Abul K.AZAD | 2020 | Frontiers in Energy2020，14，2： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员