Electrical Properties of ZnO Thin Film Transistors | Book Publisher International

As a pivotal component in modern electronics devices, TFTs play a crucial role as a switching element in display and flexible electronics. This comprehensive work meticulously explores the electrical properties of ZnO TFTs, with different gate dielectrics offering a detailed investigation of the underlying materials, diverse fabrication techniques, and strategies for optimizing performance.

The first section of the book provides a general introduction of the TFT, its applications and physical processes involved in TFT. A brief review of the works on TFTs is also introduced in this section. In the next section an insightful overview of the materials used and methodology adopted in fabrication of ZnO TFTs is presented.

The core of the book focuses elaborately on the investigation of the electrical properties of ZnO TFTs with different gate dielectric materials such as Nd2O3, La2O3 and Al2O3 using different fabrication techniques viz. thermal evaporation, chemical bath deposition and sol-gel technique. Key aspects such as field effect mobility, threshold voltage, sub-threshold swing, gain bandwidth product etc. are explored in depth. Furthermore the effect of annealing temperature in ambient and oxygen atmosphere on the TFT characteristics are also investigated and presented.

Author(s) Details:

Paragjyoti Gogoi,
Department of Physics, Sibsagar College, Joysagar (Autonomous), Sivasagar, Assam, India.

Please see the link here: https://stm.bookpi.org/EPZTFT/article/view/13456

Investigating the Effect of TiO2, CaCO3, and Al2O3 on Mechanical Properties of LDPE Polymer Composites Fabricated by Injection Moulding Technique | Chapter 9 | Technological Innovation in Engineering Research Vol. 4

In this study, CaCO3, Al2O3, and TiO2 reinforced LDPE composites that were inexpensively and efficiently functionally moulded into the shape of an ASTM-compliant die using an injection moulding machine are analysed. A variety of mechanical characteristics are evaluated on the produced specimens. This paper describes the characterisation and manufacture of Polymer Matrix composites that can be utilised as artificial bone implant materials. Bone damage can be repaired or replaced with artificial bone materials. Over the past three decades, a wide variety of implant materials, including metal alloys, ceramics, polymers, and other materials, have been created. The main concerns with metallic bone implants are stress shielding and bone regrowth. These challenges could be solved by polymeric bone implants. Polymer composites are a viable option practically everywhere because of their low cost, increased strength, and simplicity of manufacture. However, they have very little wear resistance and hardness when employed in their native state. In the current study, TiO2, Al2O3, and CaCO3 are employed as reinforcements while LDPE (Low Density Polyethylene) serves as the polymer matrix, providing information on the mechanical characteristics of polymer matrix composites. The samples were created using an injection moulding machine in accordance with ASTM standards, using varied amounts of reinforcement in the polymer matrix. Tensile and flexural impact tests are conducted.

Author(s) Details:

K. R. Dinesh,

Government Engineering College, K R Pete, Visvesvaraya Technological University, Belagavi, Karnataka, India.

Gururaj Hatti,

Department of Mechanical Engineering, KLS VDIT, Haliyal, Visvesvaraya Technological University, Belagavi, Karnataka, India.

Please see the link here: https://stm.bookpi.org/TIER-V4/article/view/7314

Straight Microchannel Printed Circuit Heat Exchanger and Influence of Nanoparticle Shapes of Boehmite Alumina on Thermal Performance | Chapter 08 | Recent Trends in Chemical and Material Sciences Vol. 8

 The second law of thermodynamics is utilised to compare the thermal performance of different forms of Boehmite Alumina to Al2O3 aluminium oxide in a Straight Microchannel Printed Circuit heat exchanger. Using empirical coefficients for dynamic viscosity and thermal conductivity, the various forms of non-spherical Boehmite Alumina are dynamically and thermodynamically characterised. Non-spherical shapes include platelets, cylindrical objects, blades, and bricks. The figure depicts thermal efficiency, thermal irreversibility, heat transfer rate, and nanofluid departure temperature. The non-spherical shapes of Boehmite Alumina have different thermal characteristics than the spherical shape when fluid flow rates and nanoparticle fractions vary. Furthermore, non-spherical particles have better heat transfer rates than spherical particles, with platelets and cylindrical forms for low volume fraction nanoparticles and bricks and blades for large volume fraction nanoparticles. The efficiency and irreversibility specified by the second law of thermodynamics open up new possibilities for heat exchanger design and make performance analysis more simple and beautiful.

Author(S) Details

Élcio Nogueira
Department of Mechanic and Energy, State University of Rio de Janeiro, Brazil.

View Book:- https://stm.bookpi.org/RTCAMS-V8/article/view/6541

Dispersed Solid Electrolyte Systems: A Brief Review | Chapter 1 | Research Trends and Challenges in Physical Science Vol. 2

 Solid State Ionics, which have a high ionic conductivity and a low activation energy for ion migration at temperatures below their melting point, are a rapidly emerging research topic. Because of their unusual transport properties and possible applications, these solid electrolytes have piqued the interest of researchers. The dispersion of a non-conducting and chemically non-interacting phase in the solid electrolyte is one of the most recent approaches. Dispersed solid-electrolyte systems are the name given to these electrolytes. The characteristics of scattered solid-electrolytes are briefly reviewed in this chapter.

Author(S) Details

Mora Veera Madhava Rao
Department of Physics, Osmania University, Hyderabad, India.

View Book:- https://stm.bookpi.org/RTCPS-V2/article/view/4485