Mo2TiC2O2 MXene-based nanoscale pressure sensor
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, cilt.116, 2020 (SCI-Expanded)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 116
- Basım Tarihi: 2020
- Doi Numarası: 10.1016/j.physe.2019.113762
- Dergi Adı: PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
- Anahtar Kelimeler: MXene, NEMS pressure sensor, NEGF, INTRINSIC HALF-METALLICITY, TRANSITION-METAL CARBIDES, TRANSPORT-PROPERTIES, SURFACE FUNCTIONALIZATION, THEORETICAL PREDICTION, ELECTRONIC-STRUCTURES, MATRIX, ORDER
- Gazi Üniversitesi Adresli: Evet
Özet
We propose Mo2TiC2O2-based quantum transport device as a pressure sensor. Using non-equilibrium Green's function technique, we have investigated the current-voltage characteristics of Mo2TiC2O2-based nanodevice under pressure. In a compressed double MXene, the electronic states originating from the two different transition metals are shifted up unequally. Thus, the character of VBM changes drastically after a critical compression. The proposed nanodevice has moderate pressure sensitivity. While the macroscopic Mo2TiC2O2 sensor is usable only for excess pressure detection, the nanodevice can act as a pressure sensor in a wider pressure range. Given the excellent stability of MXenes, Mo2TiC2O2 is a promising sensor material. The same mechanism of pressure-induced unequal level-shifting could be exploited also in other double MXenes that will be synthesized.