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1.
随着训练需求的不断变化和深入,激光诱骗干扰装备训练迫切需要探索新的更加符合实战要求的训练方法。在分析激光诱骗干扰装备干扰原理和激光半主动制导武器作战过程的基础上,以制式激光末制导炮弹为对抗目标,设计了激光诱骗干扰装备实弹对抗训练方法,为激光诱骗干扰装备的干扰性能检验和战法运用的完善提供了新的训练思路,对进一步开展类似训练提供了参考。  相似文献   
2.
李旺  罗哲  唐鹿  薛飞  郭鹏 《人工晶体学报》2017,(9):1735-1739
采用固相反应法制备了La~(3+)掺杂的Ca_(1-x)La_xCu_3Ti_4O_(12)(CCTO)陶瓷,研究了La~(3+)掺杂量对Ca1-xLaxCu3Ti4O12(x=0%,1%,3%,5%,7%)陶瓷物相结构、微观形貌和介电性能影响,对La~(3+)掺杂影响CCTO陶瓷介电性能的机理进行了分析。结果表明:x为3%时,开始出现杂相;x高于5%时,陶瓷晶粒开始细化;La~(3+)掺杂可以显著提高Ca_(1-x)La_xCu_3Ti_4O_(12)陶瓷的介电常数,同时介电损耗在高频段也相应降低,从而有助于CCTO陶瓷的综合介电性能的提升。  相似文献   
3.
乙基膦酸分子印迹光子晶体传感器的研究   总被引:1,自引:0,他引:1  
刘烽  黄舒悦  薛飞  常靖  薛敏  孟子晖 《分析化学》2012,40(8):1153-1158
本研究结合光子晶体与分子印迹技术,制备了一种新颖有机磷毒剂光学传感器——三维分子印迹光子晶体(3D-MIPCs)凝胶膜.采用聚甲基丙烯酸甲酯胶体小球为光子晶体自组装阵列模板,以甲基丙烯酸羟乙酯和N-异丙基丙烯酰胺为混合单体,乙二醇二甲基丙烯酸酯和N,N-亚甲基双丙烯酰胺为混合交联剂,正辛醇和乙腈混合溶液为溶剂,光聚得到印迹聚合物.该材料对乙基膦酸响应速度快、选择性高,其对目标分子的识别作用会导致衍射光谱图的改变.随着在EPA浓度从0.5 mmol/L增加到1.5 mmol/L的过程中,反射峰强度逐渐降低,降幅达到10%,并伴随明显红移.该材料为乙基膦酸检测提供了新的思路,在神经毒剂检测及监控等领域有应用前景.  相似文献   
4.
Three different low-temperature plasma-based methods were used to improve the surface hydrophilicity of polyethy- lene (PE) films, and all the modification processes were carried out by employing an atmospheric pressure plasma jet (APPJ) system. (a) PE films were directly modified by APPJ using a gas mixture of He and 02. (b) Acrylic acid (AA) was introduced into the system and a polymer acrylic acid (PAA) coating was deposited onto the PE films. (c) AA was grafted onto the PE surface activated by plasma pre-treatment. It was found that the hydrophilicity of the PE films was significantly improved for all the three methods. However, the samples modified by Process (a) showed hydrophobicity recovery after a storage time of 20 days while no significant change was found in samples modified by Process (b) and Process (c). The Fourier transform infrared spectroscopy (FTIR) results indicated that the most intensive C=O peak was detected on the PE surface modified by Process (c). According to the X-ray photoelectron spectroscopy (XPS) analysis, the ratios of oxygen-containing polar groups for samples modified by Process (b) and Process (c) were higher than that modified by Process (a).  相似文献   
5.
We have experimentally realized the Fredkin gate with only three transition pulses in a solution of alanine.It appears that no experimental realization of the Fredkin gate with fewer pulses has been reported yet.In addition,the simple structure of our scheme makes it easy to implement in experiments.  相似文献   
6.
Based on the logical labelling method, we prepare an effective pure state in a subsystem of a three spin system via liquid nuclear magnetic resonance technique. Then with this subspace effective pure state we implement the Deutsch-Jozsa algorithm. The tomography for the subspace effective pure state and the corresponding spectrum of the output for the Deutsch-Jozsa algorithm agree with theoretical predictions, which shows that we have successfully implemented the Deutsch-Jozsa algorithm in a subsystem of a nuclear spin system and demonstrated a subspace quantum computation.  相似文献   
7.
制备P-N结发射极的常规扩散工艺主要包括预淀积和高温推阱两个步骤。本文采用在高温推阱之后施加一步保温过程的工艺方案,在p型多晶硅片上制备了低表面浓度磷掺杂的高方阻发射极,研究了不同保温温度对P-N结发射极的方阻和磷原子掺杂分布的影响。结果表明,当完成高温推阱后,在650~750 ℃温度范围内施加保温工艺所得P-N结的方阻值反向升高,同时二次离子质谱(SIMS)测试结果表明,硅片表层区域的磷原子掺杂浓度相应降低。与常规扩散工艺相比,采用在700 ℃下保温15 min时所得P-N结的方阻升高约3.2 Ω/□,所得相应太阳能电池光电转换效率Eff达到18.69%,比产线工艺提高约0.23%。  相似文献   
8.
杭玉桦  邱岩  周颖  刘韬  朱斌  廖开星  时铭鑫  薛飞 《中国物理 B》2022,31(2):24212-024212
Laser-induced plasmas of dual-pulse fiber-optic laser-induced breakdown spectroscopy with different pulse energy ratios are studied by using the optical emission spectroscopy(OES)and fast imaging.The energy of the two laser pulses is independently adjusted within 0–30 m J with the total energy fixed at 30 m J.The inter-pulse delay remains 450 ns constantly.As the energy share of the first pulse increases,a similar bimodal variation trend of line intensities is observed.The two peaks are obtained at the point where the first pulse is half or twice of the second one,and the maximum spectral enhancement is at the first peak.The bimodal variation trend is induced by the change in the dominated mechanism of dual-pulse excitation with the trough between the two peaks caused by the weak coupling between the two mechanisms.By increasing the first pulse energy,there is a transition from the ablation enhancement dominance near the first peak to the plasma reheating dominance near the second peak.The calculations of plasma temperature and electron number density are consistent with the bimodal trend,which have the values of 17024.47 K,2.75×1017cm;and 12215.93 K,1.17×1017cm;at a time delay of 550 ns.In addition,the difference between the two peaks decreases with time delay.With the increase in the first pulse energy share,the plasma morphology undergoes a transformation from hemispherical to shiny-dot and to oblate-cylinder structure during the second laser irradiation from the recorded images by using an intensified charge-coupled device(ICCD)camera.Correspondingly,the peak expansion distance of the plasma front first decreases significantly from 1.99 mm in the single-pulse case to 1.34 mm at 12/18(dominated by ablation enhancement)and then increases slightly with increasing the plasma reheating effect.The variations in plasma dynamics verify that the change of pulse energy ratios leads to a transformation in the dual-pulse excitation mechanism.  相似文献   
9.
葡萄糖检测用分子印迹光子晶体的研究   总被引:1,自引:0,他引:1  
基于快速、持续、无创检测技术在血糖监测领域的重要性,以聚甲基丙烯酸甲酯微球阵列为光子晶体制孔模板,以葡萄糖为印迹模板,N-异丙基丙烯酰胺和甲基丙烯酸羟乙酯为混合单体,4-乙烯基苯硼酸为识别基,N,N-亚甲基双丙烯酰胺为交联剂,在制孔模板间隙进行共价型分子印迹聚合,除去制孔模板后,制得具有规整孔结构的新型光学凝胶材料--...  相似文献   
10.
分子印迹纳米胶体阵列检测爆炸物的研究   总被引:2,自引:0,他引:2  
芦薇  薛飞  黄舒悦  孟子晖  薛敏 《分析化学》2012,40(10):1561-1566
以三硝基甲苯(TNT)为模板,丙烯酰胺为功能单体,采用乳液聚合法制备具有单分散性的TNT分子印迹胶体小球.通过垂直沉降法自组装,并用胶带将得到的具有蛋白石结构的分子印迹胶体阵列(MICA)固化.研究其在不同比例的甲醇/水溶液中的光学响应,并在最优检测环境下进行特异性吸附实验.实验表明,当甲醇/水的体积比为7∶3,TNT浓度为20 mmol/L时,反射峰红移近24 nm,为非印迹胶体阵列红移量的1.4倍,为TNT结构类似物的23倍.MICA在实现对光子晶体传感器制备简化的同时,提供了对TNT进行快速裸眼检测的可能性.  相似文献   
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