ArticleSmall science2026
Nanoscale Graphene-Based Ballistic Rectifiers for Detection of High Terahertz Frequency Optical Signals.
Article in Small science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Graphene exhibits the longest carrier mean free path of any known electronic material, yet only a few device concepts have successfully leveraged this exceptional property. Here, we present a ballistic graphene rectifier capable of operating at frequencies up to 3 THz, significantly extending the limits of direct current (DC) generation through rectification in two-dimensional materials. By engineering asymmetric nanojunction geometries in high-mobility monolayer graphene encapsulated in hBN, we harness ballistic transport over >100 nm length scales to achieve efficient rectification without relying on p-n junctions or Schottky barriers. The devices exhibit robust rectified signals, with voltage responsivities of 100 V/W, 20 pW/Hz
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