The malfunctioning in the release of acetylcholine (ACh+), leading to consequential damages in the neural system, has become an impulsion for the development of numerous progressive transport and detection gadgets. However, several challenges, such as laterality and complexity of transport devices, low precision of amperometric detection systems, and sumptuous, multistaged enzymatic quantification methods, have not yet been overcome. Herein, ionomers, because of their selective ion transporting nature, are chosen as suitable candidates for being implemented into both targeted ACh+ delivery and sensing systems. Based on these two approaches, for the very first time in the literature, the disulfonated poly(arylene ether sulfone) membrane is concurrently (i) used in the mimicry of transduction of the electrical-to-ionic signal in a neural network as "Acetylcholine Pen" (ACh+ Pen) and (ii) operated as a highly sensitive, conductivity-based ACh+ quantifier. Our dual device, being able to operate under an actual action potential of 55 mVbias, shows a strong potential of future applicability in real-time ionic delivery-and-sensing systems.

Ionomer

10.1021/acsami.0c13725

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Citations (3)

Highly stable TiO2/g-C3N4 composite electrodes for quasi-solid-state supercapacitor applications

Materials Letters (2024)

Tuluhan Olcayto Çolak Çiğdem Tuç Altaf Mehmet Sankır Nurdan Demirci Sankır

10.1016/j.matlet.2024.136602

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Bifunctional ZnO nanowire/ZnSnO3 heterojunction thin films for photoelectrochemical water splitting and photodetector applications

Materials Letters (2022)

Çiğdem Tuç Altaf Ozlem Coskun Alihan Kumtepe Mehmet Sankır Nurdan Demirci Sankır

10.1016/j.matlet.2022.132450

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Citations (27)

Influence of excitation frequency on structural and electrical properties of spray pyrolyzed CuInS2 thin films

Journal of Materials Processing Technology (2014)

Nurdan Demirci Sankır Erkan Aydın Mehmet Sankır Ali Bozbey

10.1016/j.jmatprotec.2014.04.005

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Citations (23)

Impedance Spectroscopy and Dielectric Properties of Silver Incorporated Indium Sulfide Thin Films

International Journal of Electrochemical Science (2014)

Nurdan Demirci Sankır Erkan Aydın Mehmet Sankır

In this study, silver incorporated indium sulfide (In2S3) thin films have been deposited on soda lime glass via spray pyrolysis technique. Structural and electrical properties have been tailored by adding controlled amount of silver acetate into the precursor solution. A phase shift form cubic β-In2S3 to AgInS2 has been evidenced from X-ray diffraction spectra (XRD). Molecularity of the samples, meaning (Ag+In)/S ratio, has directly affected the electrical conductivity as well as the dielectric properties. Direct and alternating current conductivities increased with increasing the (Ag+In)/S ratio upto 10% silver incorporation. When the silver amount further increased conductivity decreased due to the pronounced secondary phase formation. The complex impedance analysis was used to determine the effect of silver on the conduction mechanism. It has been observed that frequency exponent of all samples were greater than unity indicating the nanocrystalline nature of the films. The variation of dielectric properties and ac conductivity with frequency revealed that the relaxation process in silver incorporated In2S3 thin films was due to the Maxwell-Wagner type of interfacial polarization in general.

Nanocrystalline material

10.1016/s1452-3981(23)08057-4

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Citations (46)