聚酰亚胺（PI）/铜复合厚膜广泛用于晶圆级封装（WLP），一个常见的问题是由热应力引起的诸如空隙，分层，裂纹或晶圆翘曲之类的缺陷。 与传统的刚性衬底/铜/钝化系统相比，PI对Cu施加了完全不同的边界约束，从而导致了特殊的应力演化，而对这种机理的理解还远远不够。 构造了五组复合材料，以通过热循环下的原位晶圆翘曲测量研究PI对Cu膜中热应力演变的影响。与有限元分析相结合，发现虽然PI确实降低了应力对Cu膜应力的影响是违反直觉的。铜，会加剧室温下的整体晶圆翘曲。 翘曲演变表明，由基材/ PI / Cu组成的复合材料承受适度的压缩应力，而裸PI膜在高温下完全应力松弛，表明Cu和PI相互抑制应力松弛。 这表明在评估聚合物金属复合材料厚膜中的应力分布时应考虑相互影响。

The Evolution of CMOS Imaging Technology

The fundamental properties of laser-induced plasma in liquid water, such as the ultrafast electron migration and solvation, have not yet been clarified. We use 1650-nm femtosecond laser pulses to induce the plasma in a stable free-flowing water film under the strong field ionization mechanism. Moreover, we adopt intense terahertz (THz) pulses to probe the ultrafast temporal evolution of quasifree electrons of the laser-induced plasma in water on the subpicosecond scale. For the first time, the T

By the 90 deg. elastic light scattering investigation and far field observation in the range of 20-800 centigrade, the relation between behavior of light scattering anomalies and evolution of nanodomain structures in lattice of barium sodium niobate (Ba2NaNb5O15, BSN) crystal was clarified. The correlation between anomalies on the temperature curves of the elastic light scattering intensity and temperature transformations of nanodomains was studied by X-ray and electron microscope methods. Phase

A finite-time recurrent neural network for solving online time-varying Sylvester matrix equation based on a new evolution formula

Logisim扩展版，支持FPGA，VHDL等，来自于加利福尼亚大学官网，可以配合MOOC中华中科技大学的课程进行CPU和存储器的设计等

In this paper, Weighted Differential Evolution Algorithm (WDE) has been proposed for solving real valued numerical optimization problems.

差分进化算法的代码

Solving CEC 2015 Multi-modal Competition Problems Using Neighborhood Based SpeciationDifferential Evolution

一本很好，很强大的，关于如何使用R进行进化树构建，模型选择，结果评估的书本