Publications by authors named "Zhen-Ni Li"
Rapid detection of molybdenum ore grade based on visible-infrared spectroscopy and MTSVD-TGJO-ELM.
Spectrochim Acta A Mol Biomol Spectrosc
October 2023
The rapid determination of ore grade can improve the efficiency of beneficiation. The existing molybdenum ore grade determination methods lag behind the beneficiation work. Therefore, this paper proposes a method based on a combination of Visible-infrared spectroscopy and machine learning to rapidly determine molybdenum ore grade.
View Article and Find Full Text PDFIn this investigation, the bandgaps and nonreciprocal transmission of the nonlinear piezoelectric phononic crystal and elastic wave metamaterial are studied. Analytical solutions for the wave motion equations with the electro-mechanical coupling are obtained. According to the continuous conditions, the stop bands and transmission coefficients of both fundamental wave and second harmonic are derived by the stiffness matrix method.
View Article and Find Full Text PDFTunable mechanical diode of nonlinear elastic metamaterials induced by imperfect interface.
Proc Math Phys Eng Sci
January 2021
Article Synopsis
- This study investigates how a nonlinear elastic metamaterial with imperfect interfaces affects non-reciprocal signal transmission.
- Using mathematical tools like the Bloch theorem and stiffness matrix method, the researchers analyze band gaps and transmission coefficients in different frequency scenarios.
- The findings compare imperfect interfaces to perfect ones and include experimental tests, aiming to help in designing devices with unique transmission properties such as diodes.