Enhanced sweat sensors lead to real-time, sustained,
noninvasive
tracking of sweat loss, ensure insight into individual health conditions
at the molecular level, and have obtained prominent interest for their
hopeful implementations in customized health tracking. Metal-oxide-based
nanostructured electrochemical amperometric sensing materials are
the best selection for continuous sweat monitoring devices owing to
their high stability, high-sensing capacity, cost-effectiveness, miniaturization,
and wide applicability. In this research, CuO thin films have been
fabricated by successive ionic layer adsorption and reaction technique
(SILAR) with and without the addition ofLawsonia inermisL. (Henna, (LiL)) leaf extract (C10H6O3, 2-hydroxy-1,4-naphthoquinone) with a high-sensitive and
rapid response for sweat solution. Despite the pristine film being
responsive to the 65.50 mM sweat solution (S= 2.66),
the response characteristic improves to 3.95 for the 1.0% LiL-implemented
CuO film. Unmodified, 1.0% LiL and 3.0% LiL-substituted thin-film
materials assure considerable linearity with linear regression ranges,R2, of 0.989, 0.997, and 0.998, respectively.
It is noteworthy here that this research aims to determine an enhanced
system that could potentially be implemented in real-life sweat-tracking
administrations. Real-time sweat loss tracking capabilities of CuO
samples was found to be promising. Derived from these outcomes, we
concluded that the fabricated nanostructured CuO-based sensing system
is a useful application for the continuous observation of sweat loss
as a biological argument and compatibility with other microelectronic
technologies.