Enhanced field emission stability of vertically aligned carbon nanotubes through anchoring for X-ray imaging applications

Abstract

It remains difficult to obtain a carbon nanotubes (CNTs) emitter that simultaneously exhibits high current density, low fluctuation, and long service time because CNTs are easily to detach from the...

Boosting field electron emission of carbon nanotubes through small-hole-patterning design of the substrate

“…Figure 4(b) shows the F-N curves of samples, indicating approximate straight lines and suggesting that the electron emission process is controlled by a quantum tunneling mechanism. For the sample treated at 500 • C, the deviation from linearity of the F-N plot may be derived from the space charge and the interface resistance between CNTs and substrate under the high electric field regions [49]. Field enhancement factor β can be further calculated and studied.…”

A multifunctional Mg2Si monolayer with negative Poisson's ratio and ultrahigh thermoelectric performance at room temperature

“…The DP theory is also used in the calculations of carrier mobility and the carrier relaxation time for recently reported materials. [80][81][82] The calculated method and results for carrier mobilities are listed in the ESI. † Apparently, the Mg 2 Si monolayer shows great anisotropy in the in-plane direction.…”

Tungsten–SiO2–Based Planar Field Emission Microtriodes with Different Electrode Topologies

“…For example, vacuum devices are widely used in wireless communications and high-speed data transmission systems due to their ability to operate at high power levels and high frequencies [6][7][8][9]. Vacuum devices also have a high radiation tolerance, making them suitable for use in aerospace technology and other environments with high radiation activity levels, such as particle accelerators or radiation sources and detectors [10][11][12][13][14].…”