Qualitative analysis of differences in the physical properties of few-layer quasi-2D crystals

Quasi-2D crystals (graphite, layered crystals А3В6, transition metal, etc.) have a variety of unique properties that can vary widely by external factors, intercalation, etc. This explains the interest in such crystals both from the point of view of fundamental research and from that of practical use. The technological possibilities of obtaining few-layer fragments of quasi-2D crystals have become another way to achieve properties not inherent in bulk materials. This article presents a generalized model of few-layer fragments, which qualitatively highlights the factors responsible for the differences between bulk quasi-2D samples and their few-layer counterparts. The model’s conclusions are in qualitative agreement with experimental and theoretical findings reported by other authors. This study also addresses the impact of external factors on the physical properties of samples with varying layer thicknesses.