Electrospun conductive gold covered polycaprolactone fibers as electrochemical sensors for O2 monitoring in cell culture media

Core–shell copper-gold nanoparticles modified at the boron-doped diamond electrode for oxygen sensors

“…33 In addition, a peak at around 400 eV was also observed conrming that the presence of N 1s. 5 Intensity of N peaks in all spectra were relatively small, which is reasonable as N-sites of all surfaces were expected to be covered by the nanoparticles. It was previously reported that the immersion of BDD in allylamine under UV irradiation for 6 h can provide allylamine attachment with an N/C ratio around 0.01.…”

“…It was previously reported that the immersion of BDD in allylamine under UV irradiation for 6 h can provide allylamine attachment with an N/C ratio around 0.01. 5 Besides the peaks of C, O, and N, a couple of peaks at around 90 eV conrmed the presence of Au and a peak at around 930 eV conrming the presence of Cu were also observed at Cu@Au-BDD. 28 Further a narrow scan spectrum of Au (Fig.…”

“…Generally, the electrochemical detection of oxygen is performed through a reduction reaction using gold-based electrodes since gold is not only sensitive to oxygen reduction reactions but also has high biocompatibility to living cells. [4][5][6][7] Furthermore, the modication of solid electrodes with metal nanoparticles was reported to enhance the signal to background current ratio, resulting in a very low detection limit. 8,9 In addition, better stability of the current responses was reported with the decreasing size of the modied particles.…”

“…6,7,10 The use of this aerobic microorganism has been proven to promote high endurance toward the interference of Cu 2+ in the free cell system. Moreover, this method is promising to solve the problem in using a standard method of BOD sensor, [5][6][7] which requires measurements for at least 5 days with a complicated procedure. 6,26 Applications of other microorganisms such as Bacillus subtilis and Trichosporon cuteneum to be utilised for BOD sensors have also been reported.…”

Synthesis of Core–Double Shell Nylon-ZnO/Polypyrrole Electrospun Nanofibers

“…Such meshes can be used either as prepared [ 14 , 15 , 16 ] or functionalized with various organic, inorganic nanostructures or both. One approach is covering them with thin films in order to obtain core–shell or core–double shell materials with applications as actuators [ 17 , 18 , 19 ], sensors [ 17 , 18 , 20 , 21 , 22 ], supercapacitors [ 9 , 23 , 24 ], tissue scaffolds [ 9 , 25 , 26 ], etc.…”