Table 2 Common geometries of nanoscale semiconducting materials
From: Field effect transistor based wearable biosensors for healthcare monitoring
Geometry | Comment | Examples |
|---|---|---|
Nanowire | • One-dimensional structure with a high aspect ratio (length much larger than diameter) • Good electrostatic control and gate control due to its small dimensions • Difficult to fabricate at exact sizes | [35] |
Nanoribbon | • Two-dimensional structure with a rectangular shape and a high aspect ratio • Allows for the precise control of electronic band structures and properties • Comparable sensitivity to nanowire but fabrication is easier | [33] |
Nanotube | • One-dimensional cylindrical structure with a tubular shape • Exhibits excellent electrical properties, such as high carrier mobility and current-carrying capacity • Surface modifications are difficult | [41] |
Nanorod | • One-dimensional structure with a rod-like shape, typically elongated in one direction • Provides a large surface-to-volume ratio, enabling efficient charge transport and enhanced device performance | [44] |
Nanosheet | • Two-dimensional structure with an atomically thin and planar geometry • Precise control over thickness and composition • Excellent electrical conductivity (High Ion/Ioff ratio) and mechanical flexibility | [16] |