薄膜中光学表征检测方案(紫外分光光度)
该研究的详细情况首次发表在《应用光学》2012 年 1 月 10 日号（总第 51 卷，第二期）上。 精确测定薄膜和多层镀膜的光学参数（使用光学镀膜的逆向工程）对于生产高质量的产品至关重要。这些数据可以给设计和生产环节提供反馈。对每一层依次进行评估后得到的逆向工程结果可以用来调整沉积参数，重校监测系统，改善对各层的厚度控制。 通常是使用紫外-可见-近红外 (UV-Vis-NIR) 或傅里叶变换红外 (FTIR) 分光光度法进行光学表征，对透明基板上的薄膜样品垂直入射或接近垂直入射时的透射率 (T)和/或反射率 (R) 的数据进行分析。然而，基于垂直入射的透射率和反射率测量的光学表征以及基于垂直或接近垂直入射的透射率和反射率测量数据的可靠的逆向工程仍然十分困难。
检测样品：
其他
检测项：
光学表征
安捷伦科技(中国)有限公司
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Flexural Toughness of Fiber-Reinforced Concrete Using
The requirements of ASTM C1550-10a for determining flexural toughness of fiber
reinforced concrete (FRC) create several challenges for most standard test systems in
service today. Specifically:
?Size of the specimen: With a diameter of 800 mm (31.5 in) most existing load testing
frames do not have the test space width to accomodate this.
检测样品：
其他
检测项：
英斯特朗
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紫外线中诱导的固化反应检测方案(流变仪)
在许多工业领域中，将紫外线固化材料用于油漆、油墨、粘合剂、涂料等的加工或应用是至关重要的。该技术将环境和成本优势与更好的产品特性相结合。由于样品中网络的建立与该样品粘弹性质（G', G'' 等）的变化直接相关，对其固化过程可进行动态流变学测量。通过将振荡流变实验与第二分析技术相结合，可更全面地测定固化过程的特点。此类补充工具可以是傅里叶变换红外光谱仪。流变仪能够分析一般固化过程或相变中材料基于时间的粘弹性变化。然而，材料的粘弹性取决于其结构，特别是其在固化过程中的结构变化。红外光谱仪是在分子水平上测定结构变化的卓越工具。我们将提供赛默飞MARS III 流变仪上紫外线固化新装置的技术细节，并展示一种光纤丙烯酸涂料的紫外线固化过程的研究实验结果。提供的数据包括流变学和光谱学数据。
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其他
检测项：
诱导的固化反应
上海力晶科学仪器有限公司
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Microscopic Measurement of Diffusion
The phenomenon of diffusion has been known for centuries. For example,the ancients who dyed fabrics certainly noticed the leading edge of their turquoise dye propagating through their cotton cloth, and biologists have long been aware of osmosis through various membranes. With our century’s
advances in engineered materials, scientists and engineers are now able to design diffusive layers to provide controlled rates and selectivity of diffusion. There are a number of applications of engineered diffusion in
current technology. Some are medical: drug patches allowing sustained
slow release of a pharmaceutical, and membranes are used in dialysis and various laboratory separation procedures. Similar to the use of drug patches is the agricultural use of slow-release nodules to provide sustained fertilisation of soil. Industrial production of chemicals and foodstuffs often
depend on separations with various membranes. Other applications are of a less organic nature, as in the separation of gases by selective diffusion
through membranes, and of ions through a solid, which might be part of a
battery or other electronic device. Sometimes, diffusion is an undesirable
phenomenon, as when we wish to store gases dissolved in a solid, and they
can diffuse out over time, or when diffusion of oxygen into a semiconductor
crystal can depreciate the performance of an electronic device.
检测样品：
其他
检测项：
HORIBA（中国）
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GC/MS 离子源中清洁和调节检测方案(气相色谱仪)
GC/MS 维护是在样品分析过程中保留分析目标的普遍要求。快速柱内反吹是 GC/MS 维护过程中的一次重要改进，能够改善离子源并延长 GC 使用寿命，并在不放真空的情况下快速完成气相色谱柱和进样口维护。另外，消除污染离子源的后洗脱组分已成为压力控制三通配置的突出特点。通过这些改进，离子源清洁频率显著降低，但是仍然需要进行清洁。冷却仪器、从分析 仪中取出离子源、机械清洁离子源、更换离子源、重新抽真空以及对分析仪 进行重新调谐和调节以改善系统灵敏度，整个过程可能需要操作人员花费大量的时间。Agilent JetClean 智氢洁离子源能够将冷却、取出、手动清洁、更换和抽真空等步骤替换为原位过程，从而节省了时间，减轻了操作人员的负担。为除去积聚的物质并恢复离子源性能，智氢洁离子源处理中形成的氢类 物质改变了离子源内部的条件。本应用简报介绍了智氢洁离子源的两种操作方法。
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其他
检测项：
清洁和调节
安捷伦科技(中国)有限公司
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流体中速度场,声场检测方案(粒子图像测速)
Although acoustics consists in the propagation of an oscillatory disturbance of local
pressure, particle velocity, density and temperature, sound measurement is often assimilated
to pressure measurement. This is because for decades only pressure fluctuations were
accessible and because their relation with the other oscillatory quantities is well known under
linear acoustic approximation and in simple configurations. Such a correct description of the
origins of sound has long been known from the theory of sound, but there is a bad habit of
acousticians to use the descriptions of sound as acoustic pressure only. Meanwhile, a sound
wave is a form of energy transport in the field and has the vectors features. Sound intensity
(SI) as a vector variable inseparably couples the acoustic particle velocity (called also
acoustic velocity). and acoustic pressure (Ia=p v) and represents a stream of acoustic energy
flowing in the field. This vector parameter of acoustic wave can be measured with special
sound intensity probe and can be easily shown in a graphical form.
检测样品：
其他
检测项：
速度场,声场
北京欧兰科技发展有限公司
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l流体中速度场检测方案(粒子图像测速)
The motion tracking enhancement technique
(MTE) is a recently introduced method to improve the
accuracy of tomographic PIV measurements at seeding
density higher than currently practiced. The working
principle is based on the fact that the particle field and its
projections are correlated between the two exposures.
Therefore, information from subsequent exposures can be
shared within the tomographic reconstruction process of a
single object, which largely reduces the energy lost into
ghost particles. The study follows a previous work based
on synthetic particle images, showing that the MTE technique
has an effect similar to that of increasing the number
of cameras. In the present analysis, MTE is applied to
Tomographic PIV data from two time-resolved experiments
on turbulent shear flows: a round jet at Re = 5,000
(facq = 1,000 Hz) and a turbulent boundary layer at the
trailing edge of an airfoil (Rec = 370,000) measured at
12,000 Hz. The application of MTE is extended to the case
of more than two recordings. The performance is assessed
comparing the results from a lowered number of cameras
with respect to the full tomographic imaging system. The
analysis of the jet flow agrees with the findings of
numerical simulations provided the results are scaled taking
into account the concept of MTE efficiency based on
the volume fraction where ghost-pairs (Elsinga et al.
2010a) are produced.
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其他
检测项：
速度场
北京欧兰科技发展有限公司
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边界层,湍流中速度矢量场检测方案(粒子图像测速)
A flat plate boundary layer flow was generated at the open test section of the circuit type 1m- wind tunnel of
the DLR, Gottingen, at a free stream velocity of U亣 = 7 m/s with zero pressure gradients. A transparent and
smooth surface glass plate is utilized to provide optical access from its bottom and a good flow quality. The
plate has an elliptic leading edge to prevent flow separation. Four tripping wires, one with 1.5 mm diameter
and three with 1 mm diameter were positioned with 1 mm x-distance close to the surface at (Rex). . 290
along the whole span-wise elongation of the plate. This bypass transition of the flow results in the
development of a turbulent boundary layer flow. In a box of about 34 x 18 x 35 mm3 in x-y and z-directions
around (Rex). . 450 tracer particles has been illuminated by laser light pulses at 4 kHz with 21 mJ each in
order to achieve PIV recordings without using the frame straddling method. The light source was a Nd:YAG
laser from Lee Laser inc. Two highly reflective dielectric mirrors aligned in the x-y-direction are installed
nearly parallel and close to the surface of the flat plate on opposite sides of the measurement region. The
collimated laser beam undergoes multiple reflections between the two mirrors passing through the
measurement volume approximately 15 times before exiting (see sketch left). This arrangement resulted in
a light amplification with a factor ~5 with respect to a single pass system. The specific illumination
arrangement has the advantage that all viewing directions collect scattered light both in forward and
backward directions, which provided the level of light needed for imaging particles in the whole volume.
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其他
检测项：
速度矢量场
北京欧兰科技发展有限公司
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流体中圆形冲击射流混合过程的LIF研究-边界条件效应检测方案(粒子图像测速)
We consider the effects of the mixing conditions at the nozzle, on the mixing
in a circular impinging jet. Two situations are considered: the completely premixed tracer
or a locally injected tracer. The local instantaneous concentration field is determined by
using Planar Laser-Induced Fluorescence (PLIF) technique. The premixed injection
variant reveals the mixing effects of the outer shear layer, while the local mixing approach
helps in understanding how to utilize the local injection for controlling the mixing of a
scalar in an impinging jet. The concentration statistics and the mixing properties indicated
by concentration probability density function (PDF) with the two injection methods are
presented. The results show the well-known structural features in the turbulent impinging
jet, the nature of mixing varies significantly in different regions of the jet. In the jet core
region and the impingement region, the mixing is dominated mainly by the large-scale
coherent structure, while in the mixing layer and wall jet region, both the large-scale
structure and small scale turbulence control the mixing.
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其他
检测项：
圆形冲击射流混合过程的LIF研究-边界条件效应
北京欧兰科技发展有限公司
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复杂基质样品和痕量分析样品中定性和定量检测方案(气质联用仪)
复杂的基质和痕量分析均要求分析者提供最佳的定性和定量数据。现在，一种新型分析技术的出现可以帮助您找到答案。
安捷伦 7200 Q-TOF GC/MS：使您最棘手的分析获得最高的分辨率、精确的质量数、全谱高灵敏度检测和 MS/MS 级的选择性
安捷伦 7200 Q-TOF 是世界上首款专门针对气质联用系统设计的 Q-TOF（四极杆飞行时间质谱）。它完美结合了分离功能强大的 7890 系列 GC 和 7000 三重串联四极杆 GC/MS 以及 6500 LC/Q-TOF 系统中久经考验的 MS 组件，重新诠释了 GC/MS 分析技术。它具有可靠的GC/MS 操作平台，出色的选择性、全谱高灵敏度质谱数据采集、高速采样频率、准确的质量信息，极大地简化了分子表征和结构鉴定的过程。
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其他
检测项：
定性和定量
安捷伦科技(中国)有限公司
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