Epigallocatechin gallate decorated carbon nanotube chemiresistors for ultrasensitive glucose detection

Solid State Sensors for Hydrogen Peroxide Detection

“…These sensors also have a response time within a range of 3–400 s which makes them a good low-cost alternative for H 2 O 2 measurements in multiple areas. 3 out of 7 studies reported here have performed interference testing [ 19 , 20 , 49 ]. One of the device was exposed to common interfering molecules present in blood such as ascorbic acid, uric acid, acetoaminophen [ 49 ].…”

“…3 out of 7 studies reported here have performed interference testing [ 19 , 20 , 49 ]. One of the device was exposed to common interfering molecules present in blood such as ascorbic acid, uric acid, acetoaminophen [ 49 ]. Other device was tested against common sugars like sucrose and fructose [ 19 ].…”

“…Chemiresistive sensors can be broadly classified based on active sensing thin film material. The active thin film can be made of various conducting or semiconducting materials such as CNTs [ 19 , 48 , 49 ], conducting polymers [ 20 , 50 , 51 ] or combinations of these materials. Contact electrodes are made of conductive materials including conductive carbon [ 50 , 51 ], metal electrodes like platinum [ 48 ], gold [ 19 , 20 , 52 ], and silver [ 49 ].…”

“…Apart from CNT dispersions, CNTs can be transferred from the grown surface to the substrate. Here, the sensor was fabricated on a PET sheet and a chemical vapor deposited CNT film was transferred to it [ 49 ]. A reactive oxidative species sensitive molecule, epigallocatechin gallate (EGCG), a compound found in green tea, was coated on the MWCNT film.…”

“…( c ) Schematics showing the steps for sensor fabrication with green tea and MWCNT and GOD. Reprinted from [ 49 ] with permission from Elsevier. ( d ) The current response for the sensor depicted in Figure 5 c with and without EGCG.…”