Fabrication of Nickel Nanodots for Application in Memory Devices

Fabrication of Nickel Nanodots for Application in Memory Devices
Author: Karishma Diwan
Publisher:
Total Pages: 154
Release: 2009
Genre: Computer storage devices
ISBN:

"Non-volatile memory (NVM) technology is widely used for data storage applications and embedded systems. Flash memory has been the most popular kind of NVM owing to the high demand of portable electronic devices in the market. One way to implement NVM is by incorporating a floating gate in the device structure [...]. Nanodot based memory devices have gained a lot of importance recently due to their potential in overcoming the limitations of conventional conductive floating gate based memory devices. The presence of nanodots in the floating gate can provide the additional advantage of discrete storage of charge and overcome the limitations of the conventional NVM devices by allowing further scaling of the tunnel oxide. Each insulated nanocrystalline dot can trap and de-trap charges based on the applied gate voltage and hence cause a shift in the threshold voltage. Distributed storage of charge prevents the device from being vulnerable to fatal leakage owing to a single leakage path, enhancing its non-volatility and retention characteristics. Since the means of charge storage is now discrete, the devices are immune to stress induced leakage current [...]. This work proposes the study and comparison of fabrication techniques of Nickel nanodots (Ni-NDs). The project will thus contribute to a better understanding of nanostructure formation, in particular, comparing equilibrium and non-equilibrium processing environments. In order to prove the applicability of Ni-NDs for memory devices, some of the Ni-NDs structures produced will be implemented in a sandwich configuration to verify storage of electrical charges. In this sandwich configuration the Ni-NDs are in between two layers of SiO2 which act as the control and tunnel oxide, respectively. The target size of the Ni-NDs is on the order of a few tens of nanometers. Although it is important to reduce the size of the nanodots considerably, it is equally important to integrate an adequate number of dots under the gate. The advantages that a nanostructured floating gate offers over the conventional floating gate can only be exploited if the nanodots obtained are within 10 nm [...]. Different approaches to Ni-NDs formation are investigated, namely, using plasma-based processes and thermal annealing. The tunnel and control oxides will be deposited by plasma sputtering and/or thermal growth. Variable angle spectroscopic ellipsometry (VASE) will be used to measure the thickness of the Ni/SiO2 films and atomic force microscopy (AFM) to characterize the topography after the Ni-NDs formation. Aluminum contacts will be produced for conducting hysteresis loop measurements, followed by generation of capacitance-voltage (C-V) curves."--Chapter 1.

Three-Dimensional Nanoarchitectures

Three-Dimensional Nanoarchitectures
Author: Weilie Zhou
Publisher: Springer Science & Business Media
Total Pages: 550
Release: 2011-08-04
Genre: Technology & Engineering
ISBN: 1441998225

Devices built from three-dimensional nanoarchitectures offer a number of advantages over those based on thin-film technology, such as larger surface area to enhance the sensitivity of sensors, to collect more sunlight to improve the efficiency of solar cells, and to supply higher density emitters for increased resolution in flat panel displays. Three-dimensional nanoscale assembly has already been used to generate many prototypes of devices and sensors, including piezoelectric nanogenerators based on ZnO nanowire arrays, photovoltaic devices based on silicon nanowire array p-n junctions, and highly sensitive gas sensors based on metal oxide nanowire arrays among others. Three-Dimensional Nanoarchitectures: Designing Next-Generation Devices describes state-of-the-art synthesis, integration, and design strategies used to create three-dimensional nanoarchitectures for functional nanodevice applications. With a focus on synthesis and fabrication methods for three-dimensional nanostructure assembly and construction, coverage includes resonators, nanophotonics, sensors, supercapacitors, solar cells, and more. This book is an essential reference for a broad audience of researchers in materials science, chemistry, physics, and electrical engineering who want the latest information on synthesis routes and assembly methods. Schematics of device integration and mechanisms as well as plots of measurement data are included.

Nanomagnetism and Spintronics

Nanomagnetism and Spintronics
Author: Farzad Nasirpouri
Publisher: World Scientific
Total Pages: 401
Release: 2011
Genre: Science
ISBN: 9814273058

Nanomagnetism and spintronics are two close subfields of nanoscience, explaining the effect of substantial magnetic properties of matter when the materials fabrication is realized at a comparable length size. Nanomagnetism deals with the magnetic phenomena specific to the structures having dimensions in the submicron range. The fact that the electronic transport properties of materials are dependent on the magnetic properties' artificial nanostructures, i.e., giant magnetoresistance (GMR) or tunneling magnetoresistance (TMR), has revolutionized spintronics science and technology. This book explains the concepts of nanomagnetism and spintronics by viewing the most recent research works from internationally distinguished research groups. Placing special emphasis on crucial fundamental and technical aspects of nanomagnetism and spintronics, it serves as a one-stop reference for universities offering postgraduate programs in nanotechnology or related disciplines. This unique book deals with all three stages required for conducting research in nanomagnetism and spintronics including fabrication, characterization and applications of nanomagnetic and spintronics materials, providing general concepts and an insightful overview of this subject for research students and scientists from different backgrounds investigating the multidisciplinary area of nanotechnology.

Microfabrication for Industrial Applications

Microfabrication for Industrial Applications
Author: Regina Luttge
Publisher: William Andrew
Total Pages: 312
Release: 2011-08-31
Genre: Technology & Engineering
ISBN: 081551977X

This book focuses on the industrial perspective for micro- and nanofabrication methods including large-scale manufacturing, transfer of concepts from lab to factory, process tolerance, yield, robustness, and cost. It gives a history of miniaturization, micro- and nanofabrication, and surveys industrial fields of application, illustrating fabrication processes of relevant micro and nano devices. Concerning sub-micron feature manufacture, the book explains: the philosophy of micro/ nanofabrication for integrated circuit industry; thin film deposition; (waveguide, plastic, semiconductor) material processing; packaging; interconnects; stress (e.g., thin film residual); economic; and environmental aspects. Micro/nanomechanical sensors and actuators are explained in depth with information on applications, materials (incl. functional polymers), methods, testing, fabrication, integration, reliability, magnetic microstructures, etc. Shows engineers & students how to evaluate the potential value of current and nearfuture manufacturing processes for miniaturized systems in industrial environments Explains the top-down and bottom up approaches to nanotechnology, nanostructures fabricated with beams, nano imprinting methods, nanoparticle manufacturing (and their health aspects), nanofeature analysis, and connecting nano to micro to macro Discusses issues for practical application cases; possibilities of dimension precision; large volume manufacturing of micro- & nanostructures (machines, materials, costs) Explains applications of Microsystems for information technology, e.g.: data recording (camera, microphone), storage (memories, CDs), communication; computing; and displays (beamers, LCD, TFT) Case studies are given for sensors, resonators, probes, transdermal medical systems, micro- pumps & valves, inkjets, DNA-analysis, lab-on-a-chip, & micro-cooling

Charge-Trapping Non-Volatile Memories

Charge-Trapping Non-Volatile Memories
Author: Panagiotis Dimitrakis
Publisher: Springer
Total Pages: 215
Release: 2017-02-14
Genre: Technology & Engineering
ISBN: 3319487051

This book describes the technology of charge-trapping non-volatile memories and their uses. The authors explain the device physics of each device architecture and provide a concrete description of the materials involved and the fundamental properties of the technology. Modern material properties, used as charge-trapping layers, for new applications are introduced. Provides a comprehensive overview of the technology for charge-trapping non-volatile memories; Details new architectures and current modeling concepts for non-volatile memory devices; Focuses on conduction through multi-layer gate dielectrics stacks.

Solid-State Chemistry of Inorganic Materials IV: Volume 755

Solid-State Chemistry of Inorganic Materials IV: Volume 755
Author: M. Á. Alario-Franco
Publisher:
Total Pages: 512
Release: 2003-08-14
Genre: Science
ISBN:

Since its inception in the mid-twentieth century, solid-state chemistry has matured within the chemical sciences. In the same way that chemistry itself is considered a central science, solid-state chemistry is central in its many relations to physics, in particular to solid-state physics and also to materials science and engineering. There are few problems in materials science or engineering in which the preparation of the material itself is not a central issue and, more often than not, this will be a solid-state chemical problem. For these reasons, it is not surprising that in the technological development of the last century, solid-state chemistry has grown in importance. It is not only a synthesis science, it is also the science of structures, defects, stoichiometry, and physical chemical properties. Most of these are explored in the book. Topics include: metal-to-insulator transition; porous materials; dielectric materials; nanomaterials; synthesis of materials; films and catalytic materials; CMR materials; thermoelectric materials; dielectrics, catalysts, phosphors, films and properties and synthesis and crystal growth.

Sustainable Nanomaterials

Sustainable Nanomaterials
Author: Imran Uddin
Publisher: Springer Nature
Total Pages: 381
Release: 2024
Genre: Green chemistry
ISBN: 9819727618

Zusammenfassung: This book brings together various topics of nanomaterials in various industrial applications to promote sustainable development practices. The first part of the book describes green nanotechnology for clean energy and environmental sustainability, which includes heavy metal detoxification from water, wastewater remediation, dye degradation, and bioremediation. The second part of the book covers sustainable biomedical applications of nanomaterials such as antibacterial activity and drug delivery systems, which includes the toxicological as well as the antibacterial impacts that nanoparticles have on microorganisms. The subsequent chapters discuss the roles of nanomaterials for sustainability in agriculture, crop protection, plant disease management, food technology (increasing the efficiency of the food industry), and the textile industry. The book caters to researchers and scientists who are interested in the utilization of nanomaterials to enhance sustainable industrial practices

Spinel Ferrite Nanostructures for Energy Storage Devices

Spinel Ferrite Nanostructures for Energy Storage Devices
Author: Rajaram S. Mane
Publisher: Elsevier
Total Pages: 204
Release: 2020-06-13
Genre: Technology & Engineering
ISBN: 0128192380

Spinal Ferrite Nanostructures for Energy Storage Devices provide up-to-date coverage of ferrite properties and applications, with a particular focus on electrochemical and electrocatalytic energy storage applications. The book covers the basics of ferrites, including synthesis methods, structures and properties in the first few chapters, focusing on topics such as the properties of ferrites and the electrochemical and electro catalytic energy storage applications of unitary, binary and mixed ferrite nanostructures. Limitations for using ferrites in these devices are also covered. This book is an important reference source for materials scientists and engineers who want to gain a greater understanding of how ferrites are being used to enhance energy storage devices. Shows how ferrites are being used in a variety of energy storage systems, including electrochemical supercapacitor systems Discusses how ferrites are being used as an abundantly available, cheaper alternative to their materials for energy storage applications Evaluates the challenges and limitations of using ferrites for energy storage applications

JJAP

JJAP
Author:
Publisher:
Total Pages: 1376
Release: 2009
Genre: Physics
ISBN: