Abstract: This application provides a method for improving quality of CDSEM images, including: reading CDSEM images of different formats and performing format conversion on the CDSEM images of different formats; selecting wavelet basis functions; setting the number N of wavelet decomposition levels; setting a threshold function and thresholds respectively corresponding to the number N of wavelet decomposition levels; performing wavelet decomposition to obtain scaling function coefficients of different levels and wavelet coefficients of different levels; performing threshold processing, including performing threshold processing on the wavelet coefficients of different levels, to obtain processed wavelet coefficients of each level; performing multidimensional wavelet reconstruction, including performing multidimensional wavelet reconstruction by using the scaling function coefficients and the processed wavelet coefficients of each of the different level, to obtain denoised CDSEM images; and performing image quality evalu

Abstract: The present application discloses a method for optimizing OPC lithography model parameters. Preliminary suboptimal parameter combinations in proximity to a plurality of local minima of a lens beam focus BF and defocus start DS are quickly found by means of a random direction search method; and then an optimal parameter combination of the lens beam focus BF and defocus start DS is finally obtained on the basis of the suboptimal parameter combinations by means of a precise search method. An optimal parameter solution can be found quickly by combining the random direction search method and the precise search method, without artificially configuring an initial search point. Moreover, the algorithm has a high convergence rate and strong robustness, and can quickly and precisely obtain parameters such as the lens beam focus BF and defocus start DS in modeling of an OPC lithography model.

Abstract: A light emitting diode (LED) assembly includes an LED light source having a first light output with a characteristic spectrum and at least one phosphor through which the first light output passes. The phosphor includes the quaternary compound M-Li—Al—O, where M is Ba, Sr, or Ca, activated by Eu2+ or Ce3+.

Abstract: A light emitting diode (LED) assembly includes an LED light source having a first light output with a characteristic spectrum and at least one phosphor through which the first light output passes. The phosphor includes the quaternary compound M-Li—Al—O, where M is Ba, Sr, or Ca, activated by Eu2+ or Ce3+.

Abstract: The invention is about methods for preparing functional polypeptide by multi-mode ultrasound enhancement on enzymolysis, and it relates to the field of functional peptide production technologies. The objective of the invention is to improve the degree of hydrolysis of protein, increase the anti-hypertensive activity of protein hydrolysate, shorten the enzymolysis time and reduce the energy consumption. To achieve this, some methods are developed, such as the method for preparing the anti-hypertensive peptide from wheat gluten by sequential ultrasound enhanced enzymatic hydrolysis, preparation of anti-hypertensive peptide from corn gluten by ultrasonic reverberation field, and the technology for preparing functional polypeptide by countercurrent mode dual frequency ultrasound pretreatment of prion protein. The invention of solid-liquid scanning ultrasonic pretreatment of corn gluten meal suspension leads to an improved efficiency of enzymatic hydrolysis.