【摘 要】
：
Developing wireless nanodevices and nanosystems is of critical importance for sensing,medical science,environmental/infrastructure monitoring,defense technology and even personal electronics.It is hig
【机 构】
：
School of Materials Science and Engineering,Georgia Institute of Technology,Atlanta USA
论文部分内容阅读
Developing wireless nanodevices and nanosystems is of critical importance for sensing,medical science,environmental/infrastructure monitoring,defense technology and even personal electronics.It is highly desirable for wireless devices to be self-powered without using battery.Nanogenerators (NGs) have been developed based on piezoelectric,trioboelectric and pyroelectric effects,aiming at building self-sufficient power sources for mico/nano-systems.
其他文献
本研究采用悬浮聚合法制备大孔苯乙烯-二乙烯苯高聚物白球,并使用浓硫酸进一步磺化得到大孔强酸型阳离子交换树脂(W)作为固体酸催化剂,结合SEM和比表面积分析等相关数据,对白球制备和磺化工艺进行了优化.并且使用树脂W进行催化酯化降酸的反应条件的优化,同时与商用凝胶强酸型阳离子交换树脂AmberlystTM BD20进行了对比.通过添加不同量的二乙烯苯交联剂来合成不同交联度的大孔苯乙烯-二乙烯苯高聚物白
Effect of pyrolysis process parameters like maximum temperature and heat preservation time on electrical and physical properties of solid bio-char carbonized in a tubular resistance furnace with a gas
选取MgO作为中温吸附剂,以Mg(NO3)2和Na2CO3为原料,在此基础上加入不同的添加剂TiO2,SiO2,Al2O3,CuO,采用沉淀法合成改性的MgO基吸附剂.利用XRD,SEM表征改性后的吸附剂,通过变温吸附脱附动态循环实验考察了吸附剂的CO2吸附性能.不同的添加剂均使吸附剂呈纳米层状结构,经过10次变温吸附-脱附循环实验,添加TiO2,SiO2,Al2O3,CuO后吸附容量分别变为初始
以HY、NiY和稀土离子改性的Y分子筛(REY)为研究对象,采用固定床装置评价噻吩模拟油催化裂化性能;运用气相色谱-氢火焰离子发光检测器(GC-FTD),气相色谱-硫化学发光检测器(GC-SCD)和原位红外光谱技术分析产物,关联分子筛的酸性,研究流化催化裂化(FCC)条件下噻吩与改性Y分子筛的作用机制.结果表明:FCC条件下,噻吩与分子筛的作用机制的差异取决于分子筛中非骨架铝物种或金属离子物种引起
以生猪养殖废弃物与煤共混制备生物质水煤浆.考察了干剂与干煤比值、pH值和固含量对生物质水煤浆粘度的影响.结果表明:pH为8.56,干剂与干煤比值为1.5％时,生物质水煤浆固含量可达到61.93％,其表观粘度1 052.7±20 mPa·s.生物质水煤浆具有良好的静置稳定性,且随着生物质添加量的增加,期稳定性增强.表明生猪养殖废弃物可代替水煤浆添加剂和部分煤制备生物质水煤浆.
The entrained-flow coal gasification is an important and attractive technology in large scale coal based synthetic natural gas (SNG) process.In this study,an integrated entrained-flow coal gasifica ti
在CO2捕集领域,氨基酸离子液体(AAILs)是醇胺溶液有潜力的绿色替代品.但是,其粘性大大阻碍了它的进一步应用,负载法可有效解决这一问题.本文采用浸渍蒸发法将四甲基铵甘氨酸([N1111]Gly)、四甲基铵赖氨酸([N1111]Lys)两种离子液体分别负载到硅胶表面,利用TGA、EA、BET、SEM、FT-IR等技术对吸收剂进行表征.研究表明,离子液体成功负载到硅胶表面,制备的吸收剂具有较大的比
以凹凸棒土(APT)作载体,分别以NH3·H2O、NH4HCO3、NaOH和NaHCO3为沉淀剂,采用沉积沉淀法制备了一系列Pd-Cu/APT催化剂,考察了沉淀剂对催化剂CO常温催化氧化性能的影响.利用N2-physisorption、XRD、FT-IR和TPR等表征手段对催化剂进行表征.结果表明,在空速6 000 h-1,CO体积分数1.5％,水蒸气体积分数3.3％的反应条件下,以NH3·H2O
Considering the oxygen-containing functional groups on the graphene oxide (GO) surfaces and high surface area,the graphene oxide nanosheets should have high sorption capacity of pollutants from contam
With fast developing in nanoscience and nanotechnology,it has been a big challenge on how to synthesize high quality nanoscale building blocks in macroscopic-scale and assembly them into macroscopic a