Colorimetric techniques have been used in routine and advanced analysis for over a century. Recently, many efforts have been made to create smaller, more sensitive sensors, visual response, easy control, personalization and wearability. [146, 147] However, most of these trackings require expensive tools, sophisticated techniques, and electrical power. In this regard, colorimetric techniques in the last two decades due to the development of the concept of miniaturization, for example, paper-based analytical devices that mainly use colorimetric reactions, and with the development and popularity of new image capture tools, have gained high visibility[148-151]. Colorimetric sensors due to their simplicity, easy construction, low cost, visual response and ease of interpretation without power consumption, cost-effectiveness and fast response, while analyzing its ideal features, They are very substantial [146, 152]. Colorimetric sensors are an important part of optical sensors that show a clear color change in response to analyte. [142] In fact, colorimeter sensor arrays are chemical sensors that use the appropriate colors to detect a particular analyte [153-155]. Diagnosis is usually based on the direct interaction of a chemical reagent with an analyte. These interactions are likely lead to minor changes in the reagent and lead to a distinct color change that can be seen with the naked eye. [156] in fact, Recognizes the color change due to the specific reaction of the analyte with the appropriate reagent [157].
Colorimetric techniques have been
used
in routine and advanced analysis for over a century. Recently,
many
efforts have
been made
to create smaller, more sensitive sensors, visual
response
, easy control, personalization and
wearability
. [146, 147]
However
, most of these
trackings
require expensive tools, sophisticated techniques, and electrical power. In this regard, colorimetric techniques in the last two decades due to the development of the concept of miniaturization,
for example
, paper-based analytical devices that
mainly
use
colorimetric reactions, and with the development and popularity of new image capture tools, have gained high visibility[148-151]. Colorimetric sensors due to their simplicity, easy construction, low cost, visual
response
and
ease
of interpretation without power consumption, cost-effectiveness and
fast
response
, while analyzing its ideal features, They are
very
substantial [146, 152]. Colorimetric sensors are an
important
part of optical sensors that
show
a
clear
color
change
in
response
to analyte. [142] In fact,
colorimeter
sensor arrays are chemical sensors that
use
the appropriate colors to detect a particular analyte [153-155]. Diagnosis is
usually
based on the direct interaction of a chemical reagent with an analyte. These interactions are likely lead to minor
changes
in the reagent and lead to a distinct
color
change
that can be
seen
with the naked eye. [156] in fact, Recognizes the
color
change
due to the specific reaction of the analyte with the appropriate reagent [157].