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【期刊论文】Interface influence on the surface plasmon resonance of Ag nanocluster composite
蒋昌忠, Feng Ren a, b, Changzhong Jiang a, *, Chang Liu a, Dejun Fu a, Ying Shi a
Solid State Communications 135(2005)268-272,-0001,():
-1年11月30日
Ag nanoclusters embedded in silica matrix were formed by ion implantation to different doses. The intensity of surface plasmon resonance absorption enhances with the increasing of the implanted dose, but decreases at dose higher than 1
A., Nanocluster composites, D., Ion implantation, D., Surface plasmon resonance absorption
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蒋昌忠, F. Ren a, b, C.Z. Jiang a, H.B. Chen c, Y. Shi a, C. liu a, J.B. Wang a
Physica B 353(2004)92-97,-0001,():
-1年11月30日
The preparation of metal alloy and monoelemental nanoclusters in silica by Ag, Cu ion sequential implantation and annealing in selected oxidizing or reducing atmosphere is studied. The formation of metastable Ag-Cu alloy is verified in the as-implanted samples by optical absorption spectra, selected area electron diffraction and energy dispersive spectrometer spectrum. The alloy is discomposed at elevated annealing temperature in both oxidizing and reducing atmospheres. The different effects of annealing behaviors on the Ag-Cu alloy nanoclusters are investigated.
Ion implantation, Nanocluster composites, Alloy, Annealing
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【期刊论文】A new type of scanning electron microscope using the coaxial backscattered electrons
蒋昌忠, C.Z. Jiang a, b, *, P. Morin c, N. Rosenberg b
Micron 33(2002)69-74,-0001,():
-1年11月30日
A new coaxial detection system for backscattered electrons in SEM is described. This coaxial detection system allows us to collect only the backscattered electrons that have lost a small percentage of the primary energy, emerging from the sample surface with a take-off angle de
Scanning electron microscope, Backscattered electron, Coaxial detection, Monte Carlo simulation, Backscattering coeffcient, Composition analysis
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【期刊论文】Ag离子注入非晶SiO2的光学吸收、拉曼谱和透射电镜研究
蒋昌忠, 刘向绯), 蒋昌忠))†, 任峰), 付强))
物理学报,2005,54(10):4363~7364,-0001,():
-1年11月30日
能量为200keV的Ag离子,以1×1016,5×1016,1×1017cm-2的剂量分别注入到非晶SiO2玻璃,光学吸收谱显示:注入剂量为1×1016cm-2的样品的光吸收谱为洛伦兹曲线,与Mie理论模拟的曲线形状一致;注入剂量较大的5×1016,1×1017cm-2的谱线共振吸收增强,峰位红移并出现伴峰。透射电镜观察分析表明,注入剂量不同的样品中形成的纳米颗粒的大小、形状、分布都不同,注入剂量较大的还会产生明显的表面溅射效应,这些因素都会影响共振吸收的峰形、峰位和峰强。当注入剂量达到1×1017cm-2时,Ag纳米颗粒内部可能还形成了杂质团簇。
离子注入,, 纳米颗粒,, 共振吸收,, 红移
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蒋昌忠, JIANG Chang-Zhong, , p. Morin, N. Rosenberg
CHIN. PHYS. LETT. Vol. 17. No.9 (2000) 637-639,-0001,():
-1年11月30日
A new detection system in scanning electron microscope, which filters in energy and detects the backscattered electrons close to the microscope axis, is described. This technique ameliorates the dependence of the backscat-tering coefficient on atomic number, and suppresses effectively the relief contrast at the same time. Therefore this new method is very suitable to the composition analysis.
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