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.

Nanofabrication

Nanofabrication
Author: Maria Stepanova
Publisher: Springer Science & Business Media
Total Pages: 344
Release: 2011-11-08
Genre: Technology & Engineering
ISBN: 3709104246

Intended to update scientists and engineers on the current state of the art in a variety of key techniques used extensively in the fabrication of structures at the nanoscale. The present work covers the essential technologies for creating sub 25 nm features lithographically, depositing layers with nanometer control, and etching patterns and structures at the nanoscale. A distinguishing feature of this book is a focus not on extension of microelectronics fabrication, but rather on techniques applicable for building NEMS, biosensors, nanomaterials, photonic crystals, and other novel devices and structures that will revolutionize society in the coming years.

JJAP

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

Electrode Materials for Energy Storage and Conversion

Electrode Materials for Energy Storage and Conversion
Author: Mesfin A. Kebede
Publisher: CRC Press
Total Pages: 518
Release: 2021-11-17
Genre: Science
ISBN: 1000457869

This book provides a comprehensive overview of the latest developments and materials used in electrochemical energy storage and conversion devices, including lithium-ion batteries, sodium-ion batteries, zinc-ion batteries, supercapacitors and conversion materials for solar and fuel cells. Chapters introduce the technologies behind each material, in addition to the fundamental principles of the devices, and their wider impact and contribution to the field. This book will be an ideal reference for researchers and individuals working in industries based on energy storage and conversion technologies across physics, chemistry and engineering. FEATURES Edited by established authorities, with chapter contributions from subject-area specialists Provides a comprehensive review of the field Up to date with the latest developments and research Editors Dr. Mesfin A. Kebede obtained his PhD in Metallurgical Engineering from Inha University, South Korea. He is now a principal research scientist at Energy Centre of Council for Scientific and Industrial Research (CSIR), South Africa. He was previously an assistant professor in the Department of Applied Physics and Materials Science at Hawassa University, Ethiopia. His extensive research experience covers the use of electrode materials for energy storage and energy conversion. Prof. Fabian I. Ezema is a professor at the University of Nigeria, Nsukka. He obtained his PhD in Physics and Astronomy from University of Nigeria, Nsukka. His research focuses on several areas of materials science with an emphasis on energy applications, specifically electrode materials for energy conversion and storage.

Materials Nanoarchitectonics

Materials Nanoarchitectonics
Author: Katsuhiko Ariga
Publisher: Elsevier
Total Pages: 648
Release: 2023-12-15
Genre: Technology & Engineering
ISBN: 0323994733

Materials Nanoarchitectonics: From Integrated Molecular Systems to Advanced Devices provides the latest information on the design and molecular manipulation of self-organized hierarchically structured systems using tailor-made nanoscale materials as structural and functional units. The book is organized into three main sections that focus on molecular design of building blocks and hybrid materials, formation of nanostructures, and applications and devices. Bringing together emerging materials, synthetic aspects, nanostructure strategies, and applications, the book aims to support further progress, by offering different perspectives and a strong interdisciplinary approach to this rapidly growing area of innovation. This is an extremely valuable resource for researchers, advanced students, and scientists in industry, with an interest in nanoarchitectonics, nanostructures, and nanomaterials, or across the areas of nanotechnology, chemistry, surface science, polymer science, electrical engineering, physics, chemical engineering, and materials science. Offers a nanoarchitectonic perspective on emerging fields, such as metal-organic frameworks, porous polymer materials, or biomimetic nanostructures Discusses different approaches to utilizing "soft chemistry" as a source for hierarchically organized materials Offers an interdisciplinary approach to the design and construction of integrated chemical nano systems Discusses novel approaches towards the creation of complex multiscale architectures

Laser Ablation in Liquids

Laser Ablation in Liquids
Author: Guowei Yang
Publisher: CRC Press
Total Pages: 1166
Release: 2012-02-22
Genre: Science
ISBN: 9814241520

This book focuses on the fundamental concepts and physical and chemical aspects of pulsed laser ablation of solid targets in liquid environments and its applications in the preparation of nanomaterials and fabrication of nanostructures. The areas of focus include basic thermodynamic and kinetic processes of laser ablation in liquids, and its applic

Handbook of Spintronics

Handbook of Spintronics
Author: Yongbing Xu
Publisher: Springer
Total Pages: 0
Release: 2015-10-14
Genre: Science
ISBN: 9789400768918

Over two volumes and 1500 pages, the Handbook of Spintronics will cover all aspects of spintronics science and technology, including fundamental physics, materials properties and processing, established and emerging device technology and applications. Comprising 60 chapters from a large international team of leading researchers across academia and industry, the Handbook provides readers with an up-to-date and comprehensive review of this dynamic field of research. The opening chapters focus on the fundamental physical principles of spintronics in metals and semiconductors, including an introduction to spin quantum computing. Materials systems are then considered, with sections on metallic thin films and multilayers, magnetic tunnelling structures, hybrids, magnetic semiconductors and molecular spintronic materials. A separate section reviews the various characterisation methods appropriate to spintronics materials, including STM, spin-polarised photoemission, x-ray diffraction techniques and spin-polarised SEM. The third part of the Handbook contains chapters on the state of the art in device technology and applications, including spin valves, GMR and MTJ devices, MRAM technology, spin transistors and spin logic devices, spin torque devices, spin pumping and spin dynamics and other topics such as spin caloritronics. Each chapter considers the challenges faced by researchers in that area and contains some indications of the direction that future work in the field is likely to take. This reference work will be an essential and long-standing resource for the spintronics community.

Organic Spintronics

Organic Spintronics
Author: Zeev Valy Vardeny
Publisher: CRC Press
Total Pages: 354
Release: 2010-04-09
Genre: Science
ISBN: 1439806578

Major development efforts in organic materials research has grown for an array of applications. Organic spintronics, in particular, has flourished in the area of organic magneto-transport. Reflecting the main avenues of advancement in this arena, this volume explores spin injection and manipulation in organic spin valves, the magnetic field effect in organic light-emitting diodes (OLEDs), the spin transport effect in relation to spin manipulation, organic magnets as spin injection electrodes in organic spintronics devices, the coherent control of spins in organic devices using the technique of electronically detected magnetic resonance, and the possibility of using organic spin valves as sensors.

Inorganic Electrochemistry

Inorganic Electrochemistry
Author: Piero Zanello
Publisher: Royal Society of Chemistry
Total Pages: 733
Release: 2007-10-31
Genre: Science
ISBN: 1847551149

Electrochemistry can be an elegant and essential support to synthetic inorganic chemistry. However, it is often perceived as a difficult technique. This book aims to introduce inorganic chemists to electrochemical investigations in as straightforward a way as possible. First, the reader is introduced to the theory of electron transfer processes, how they can be studied by various electrochemical techniques, and the practical procedures required. The book then goes on to look extensively, and with numerous illustrations, at the application of the techniques in the multiple fields of inorganic chemistry (including organometallics, coordination compounds, bioinorganics/biomimetics and materials science). Topics covered include: metallocenes; organometallic and coordination complexes; metal complexes of redox active ligands; metal-carbonyl clusters; superconductors; molecular wires; and proteins. Throughout, special attention is paid to the structural effects accompanying the electron transfer processes. This unique book bridges the gap between undergraduate and research-level electrochemistry books, and will be welcomed as an introduction to electrochemical applications within inorganic chemistry.

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.