Yinchang Ma

Yinchang Ma, Yuan Yan, and Tao Yang contributed equally to this work. Conflicts of Interest The authors declare no conflicts of interest. Data Availability Statement The data that support the findings of this study are available from the corresponding author upon reasonable request. Supporting Information Filename Description adma74102-sup-0001-SuppMat.docx5.4 MB Supporting File: adma74102-sup-0001-SuppMat.docx.

Abstract Phase engineering of two-dimensional van der Waals materials offer a rich landscape to uncover the potential ferroelectric properties. The precisely controlling phases in these reduced dimensional materials with the unique atomic arrangement are crucial. Herein, through a novel phase engineering approach, we synthesize CuInP2(S1-xSex)6 crystal with controllable coexistence of monoclinic and trigonal phases, and experimentally realize relaxor ferroelectricity in low-dimensional materials.

Abstract Photonic memristors based on two-dimensional materials are emerging as critical components for ultrascalable, energy-efficient artificial vision systems, integrating opto-sensing, data storage and processing capabilities. However, existing devices typically exhibit narrow spectral response ranges and operate in a single mode (for example, non-volatility), limiting their applications in complex computing scenarios.