Facile Fabrication of Hybrid Carbon Nanotube Sensors by Laser Direct Transfer

Abstract

Ammonia is one of the most frequently produced chemicals in the world, and thus, reliable measurements of different NH3 concentrations are critical for a variety of industries, among which are the agricultural and healthcare sectors. The currently available technologies for the detection of NH3 provide accurate identification; however, they are limited by size, portability, and fabrication cost. Therefore, in this work, we report the laser-induced forward transfer (LIFT) of single-walled carbon nanotubes (SWCNTs) decorated with tin oxide nanoparticles (SnO2 NPs), which act as sensitive materials in chemiresistive NH3 sensors. We demonstrate that the LIFT-fabricated sensors can detect NH3 at room temperature and have a response time of 13 s (for 25 ppm NH3). In addition, the laser-fabricated sensors are fully reversible when exposed to multiple cycles of NH3 and have an excellent theoretical limit of detection of 24 ppt.

Multiplexed Gas Sensor: Fabrication Strategies, Recent Progress, and Challenges

“…98 Bonciu et al proposed the first development of a SWCNT@SnO 2 nanocomposite-based resistive sensor using the LIFT technique, which shows a low 0.59 ppb level detection of NH 3 gas (see Figure 5B). 99 Thus, with the help of the LIFT method, miniaturized planar nanostructures with high-resolution functional characteristics can be developed. Table 1 shows the comparison of the abovementioned fabrication techniques.…”

“…The fabricated gas sensor has low ppm sensitivity to ethanol and methane (see Figure A) . Bonciu et al proposed the first development of a SWCNT@SnO 2 nanocomposite-based resistive sensor using the LIFT technique, which shows a low 0.59 ppb level detection of NH 3 gas (see Figure B) . Thus, with the help of the LIFT method, miniaturized planar nanostructures with high-resolution functional characteristics can be developed.…”

Nanopatterning of Bionic Materials

“…Herein, only original research articles have been considered for publication. The present Special Issue includes contributions on the following research topics: Functionalization of Ti-based medical implants by means of laser-induced micro- and nanostructures for cell repellence as well as for osteoblastic proliferation and differentiation [ 2 , 3 , 4 ]; Polymer surfaces with antimicrobiotic and antiadhesive properties induced by laser-induced periodic surface structures (LIPSS) in connection with nanofibers or nanowires [ 5 , 6 , 7 ]; The generation of novel hybrid carbon nanotube materials for biosensing applications by means of laser-induced forward transfer (LIFT) [ 8 ]. …”

“…The generation of novel hybrid carbon nanotube materials for biosensing applications by means of laser-induced forward transfer (LIFT) [ 8 ].…”

Nitrites Detection with Sensors Processed via Matrix-Assisted Pulsed Laser Evaporation

“…The central performances desired from an electrochemical sensor are the linearity of the sensor’s output with the recorded signal, a low limit of detection (LOD), high selectivity for a specific contaminant, and high sensitivity. The modification of the electrode with carbon nanomaterials, such as carbon nanotubes (CNTs), metallic nanoparticles (NPs), macromolecules, and polymers, can improve the detection performances of the electrochemical sensors [ 4 , 5 , 6 , 7 ].…”