Solomon Demiss Negedu

Bahir Dar Institute of Technology Bahir Dar University

Polyaniline-based materials have been widely used for supercapacitors due to their outstanding properties, such as high specific capacitance, excellent electrochemical properties, and ease of synthesis methods; however, the short-cycle stability of PANI-based supercapacitors and swelling and shrinking of polymeric structures limit their commerciali...

ABSTRACT: To address the challenges associated with ultrasensitive dopamine sensing for regular health monitoring, here we have developed a flexible sensor using two-dimensional Cobalt Telluride (2D-CoTe2). The 2D-CoTe2 coated glassy carbon electrode sensor shows a limit of detection (LoD) of 0.21 pM measured by Differential Pulse Voltammetry (DPV)...

Two-dimensional (2D) layered transition-metal based tellurides (chalcogens) are known to harness their surface atoms’ characteristics to enhance topographical activities for energy conversion, storage, and magnetic applications. The gradual stacking of each sheet alters the surface atoms’ subtle features such as lattice expansion, leading to severa...

Transition-metal tellurides (TMTs) are promising materials for "post-graphene age" nanoelectronics and energy storage applications owing to their industry-standard compatibility, high electron mobility, large spin-orbit coupling (SOC), etc. However, tellurium (Te) having a larger ionic radius (Z = 52) and broader d-bands endows TMTs with semimetall...

We report a previously unreported application of the spatial self-phase modulation (SSPM) technique for recognizing solute-solvent interaction in a suspension of 2D material. Broadband optical absorption of the 2D Co2Te3 leads to a nonlinear optical (NLO) susceptibility for the monolayer, i.e., $\chi _{Mono}^{(3 )}$ χ M o n o ( 3 ) of 1.5 ×10⁻⁹ (3....

Objectives The present work aimed to investigate the deformation behavior of complex ant mound architectures under compression. Methods We have used the cement casting method to extract four different ant nest morphologies. These casted cement structures were digitalized using a 3D micro-computer tomography (CT) scan. The digitized structures were...

Magnetism in semiconductor two-dimensional (2D) materials is gaining popularity due to its potential applications in memory devices, sensors, spintronics, and biomedical applications. Here, 2D cobalt telluride (CoTe) has been synthesized from its bulk crystals using a simple and scalable liquid-phase exfoliation method. The ultrathin CoTe shows ~ 4...

Two-dimensional (2D) materials have been shown to be efficient in energy harvesting. Here, we report the use of waste heat to generate electricity via the combined piezoelectric and triboelectric properties of 2D cobalt telluride (CoTe2). The piezo-triboelectric nanogenerator (PTNG) produced an open-circuit voltage of ∼5 V under 1 N force and the e...

Two dimensional (2D) materials have received a surge in research interest due to their exciting range of properties. Here we show that 2D cobalt telluride (Co2Te3), successfully synthesized via liquid-phase exfoliation in an organic solvent, exhibits weak ferromagnetism and semiconducting behavior at room temperature. The magnetic field-dependent p...

Magnetism in semiconductor two-dimensional (2D) materials is gaining popularity due to its potential application in memory devices, sensors, spintronic and biomedical applications. Here, 2D Cobalt Telluride (CoTe) has been synthesized from its bulk crystals using a simple and scalable liquid-phase exfoliation method. The atomically thin CoTe shows...

Two-dimensional (2D) materials have been shown to be efficient in energy harvesting. Here, we report utilization of waste heat to generate electricity via combined piezoelectric and triboelectric property of 2D Cobalt Telluride (CoTe2). The piezo-triboelectric nanogenerator (PTNG) produced an open-circuit voltage of ~5V under 1N force and the effec...

Two-dimensional (2D) materials are at the forefront of current materials research due to their exciting and unique properties. 2D tellurides are emerging materials which are yet to be fully explored. To provide an overview of this emergent field, in this review, we discuss the structure, properties, synthesis methods, and applications of selected 2...

Composites have played a key role in revolutionizing the automobile, marine, and aerospace industries. There is a constant attempt for the development of low‐density composite materials with superior mechanical and corrosion‐resistant properties for elevated temperature applications. Herein, an attempt is made to develop a nature‐inspired unique al...

Our planet’s community largely depends on a snug energy supply, and non-renewable energy such as fossil fuel has been serving as the most trustworthy energy source from its discovery time of 1673 till to the current century. However, non-renewable energy resources are rapidly decreased per year due to increasing the energy consumption rate. To addr...