Process Controlled Ruthenium on 2D Engineered V‐MXene via Atomic Layer Deposition for Human Healthcare Monitoring

Abstract

In searching for unique and unexplored 2D materials, the authors try to investigate for the very first time the use of delaminated V‐MXene coupled with precious metal ruthenium (Ru) through atomic layer deposition (ALD) for various contact and noncontact mode of real‐time temperature sensing applications at the human–machine interface. The novel delaminated V‐MXene (DM‐V2CTx) engineered ruthenium‐ALD (Ru‐ALD) temperature sensor demonstrates a competitive sensing performance of 1.11% °C−1 as of only V‐MXene of 0.42% °C−1. A nearly threefold increase in sensing and reversibility performance linked to the highly ordered few‐layered V‐MXene and selective, well‐controlled Ru atomic doping by ALD for the successful formation of Ru@DM‐V2CTX heterostructure. The advanced heterostructure formation, the mechanism, and the role of Ru have been comprehensively investigated by ultra‐high‐resolution transmission/scanning transmission electron microscopies coupled with next‐generation spherical aberration correction technology and fast, accurate elemental mapping quantifications, also by ultraviolet photoelectron spectroscopy. To the knowledge, this work is the first to use the novel, optimally processed V‐MXene over conventionally used Ti‐MXene and its surface‐internal structure engineering by Ru‐ALD process‐based temperature‐sensing devices function and operational demonstrations. The current work could potentially motivate the development of multifunctional, future, next‐generation, safe, personal healthcare electronic devices by the industrially scalable ALD technique.

Recent Advances in Two-Dimensional Nanomaterials for Healthcare Monitoring

“…DM-V 2 CT x shows a significantly better sensing performance (1.11% °C –1 ) than that of V-MXene (0.42% °C –1 ). This pioneering work, which introduces a novel application of V-MXene and an engineering strategy involving Ru-ALD, opens new frontiers in the fabrication of multifunctional next-generation personal healthcare devices using industrially scalable ALD techniques . Notably, for reliable and accurate human-body temperature measurements, wearable sensors comprising 2D nanomaterials and their composites should maintain consistent contact with varying skin contours, show high stability in the presence of factors such as sweat and movement, minimize signal interference, exhibit high sensitivity across the physiological temperature range, and maintain acceptable biocompatibility.…”

Resent Development of Binder‐Free Electrodes of Transition Metal Oxides and Nanohybrids for High Performance Supercapacitors – A Review

“…Numerous studies on the electrode materials and synthesis techniques have been done to generate self-supported metal oxides and composite-based nanostructured electrode materials. [79][80][81] The majority of nanomaterials utilized in SCs have larger surface areas and greater electrochemical stability, which consequently provides extraordinary capacitive performances. Most of the nanomaterials are produced as powders that are blended with a binder before being applied to current collectors.…”