This document provides an overview of chemical vapor deposition (CVD) and physical vapor deposition (PVD) processes. CVD involves reacting vapor phase chemicals in a reaction chamber to form a thin solid film on a substrate. Key steps in the CVD process include transporting reactants, adsorption on the substrate surface, and desorption of byproducts. PVD involves vaporizing a solid material using techniques like evaporation, sputtering, or pulsed laser deposition under vacuum conditions. The vaporized material then condenses as a thin film on the substrate. The document compares advantages and applications of the two deposition methods.
Chemical Vapour Deposition is a Chemical Synthesis route of Nanomaterials. Specially thin films like Graphene and Carbon NanoTubes are grown by this method.
Chemical Vapour Deposition is a Chemical Synthesis route of Nanomaterials. Specially thin films like Graphene and Carbon NanoTubes are grown by this method.
Hot wall reactor is a high temperature chamber in which the substrate is placed for coating. In this reactor including the substrate, all other parts (inlet and outlet tubes) inside the chamber get coated.
Anne marie valente feliciano - nucleation of nb films on cu substratesthinfilmsworkshop
In the pursuit of niobium (Nb) films with similar performance with the commonly used bulk Nb surfaces for Superconducting RF (SRF) applications, significant progress has been made with the development of energetic condensation deposition techniques. The controlled incoming ion energy enables a number of processes such as desorption of adsorbed species, enhanced mobility of surface atoms and sub-implantation of impinging ions, thus producing improved film structures at lower process temperatures. All these along with the quality of the Cu substrate have an important influence on the nucleation and subsequent growth of the Nb film, creating a favorable template for growing the final surface exposed to SRF fields. This contribution shows how the structure and defect density thus electron mean free path (represented by residual resistance ratio values) of Nb films can be tailored on Cu substrates, by varying the ion energy and thermal energy provided to the substrate, favoring the hetero-epitaxial or the fiber growth mode.
Hot wall reactor is a high temperature chamber in which the substrate is placed for coating. In this reactor including the substrate, all other parts (inlet and outlet tubes) inside the chamber get coated.
Anne marie valente feliciano - nucleation of nb films on cu substratesthinfilmsworkshop
In the pursuit of niobium (Nb) films with similar performance with the commonly used bulk Nb surfaces for Superconducting RF (SRF) applications, significant progress has been made with the development of energetic condensation deposition techniques. The controlled incoming ion energy enables a number of processes such as desorption of adsorbed species, enhanced mobility of surface atoms and sub-implantation of impinging ions, thus producing improved film structures at lower process temperatures. All these along with the quality of the Cu substrate have an important influence on the nucleation and subsequent growth of the Nb film, creating a favorable template for growing the final surface exposed to SRF fields. This contribution shows how the structure and defect density thus electron mean free path (represented by residual resistance ratio values) of Nb films can be tailored on Cu substrates, by varying the ion energy and thermal energy provided to the substrate, favoring the hetero-epitaxial or the fiber growth mode.
Journal of Thin Films, Coating Science Technology and Application vol 3 issue 3STM Journals
Journal of Thin Films, Coating Science Technology and Application (JoTCSTA) Publishes Review /Research articles and attempts to bring out latest cutting –edge technologies in the field of coating technology, Subject areas suitable for publication include ,but are not limited to the following fields
Focus and Scope Covers
Biomaterials, colloid and surface chemistry
Adhesion, contact mechanics and Coatings Technology
Friction and wear, including mechanisms, modeling, characterization, measurement and testing
lubricants and Lubrication technology and applicarion
Coatings and surface treatments and Surface integrity
Tribology of composite materials: metallic, polymeric and ceramic and Tribological applications
Surface modifications, including surface cladding, cutting, polishing and grinding
material science, manufacturing , foundry, welding, joining, composites manufacturing
thermal and plasma spraying, thermo-chemical treatment,
Plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting.
Corrosion, friction performance and wear resistance
Surfaces, Interfaces, Thin Films, Corrosion and Coatings
Electroless and Friction based coating, Coatings for biological applications and High temperature applications
A key vacuum deposition technique for making highly homogenous and high-performance solid-state thin films and materials is Chemical vapor deposition. The types of CVD systems and their key applications would also be discussed in this presentation. It is a key bottom-up processing technique, widely used in graphene fabrication, also the fabrication of various oxides, nitrides is possible, with this technique.
This document gives information about the vapor deposition i.e. (CVD and PVD) on tools, the way these tools manufactured and what affects they produce during usage? When they are used in different manufacturing operations? High material removal rate, good surface finish and high productivity rate are the needs of manufacturing industry i.e. actually an “efficient tool”. So, this document discuss about these tools.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
PHP Frameworks: I want to break free (IPC Berlin 2024)
Chemical Vaour Deposition & Physical Vapour Deposition techniques.
1. Chemical Vapour Deposition &
Physical vapour deposition
Presented by;
Tapan Patel
Department Of Nanotechnology,
V.V.P. Engineering College , Rajkot
2. OUTLINE
Introduction
CVD apparatus
CVD process
Advantages & Disadvantages
Application of CVD
PVD Process
Varients of PVD
Advantages & Disadvantages
Application of PVD
Difference Between PVD & CVD
3. CHEMICAL VAPOUR DEPOSITION
CVD is the formation of a non-volatile solid film on
a substrate by the reaction of vapor phase chemicals
(reactants) that contain the required constituents.
The reactant gases are
introduced into a reaction
chamber and are decomposed
and reacted at a heated surface
to form the thin film.
4. CVD APPARATUS
Gas delivery system – For the supply of precursors to
the reactor chamber
Reactor chamber – Chamber within which deposition
takes place
Substrate loading mechanism – A system for
introducing and removing substrates, mandrels etc.
Energy source – Provide the energy/heat that is
required to get the precursors to react/decompose.
Vacuum system – A system for removal of all other
gaseous species other than those required for the
reaction/deposition.
5. CONTI…
Exhaust system – System for removal of volatile by-
products from the reaction chamber.
Exhaust treatment systems – In some instances,
exhaust gases may not be suitable for release into
the atmosphere and may require treatment or
conversion to safe/harmless compounds.
Process control equipment – Gauges, controls etc..
to monitor process parameters such as pressure,
temperature and time. Alarms and safety devices
would also be included in this category.
6. Steps involved in a CVD process
(schematic)
1. Transport of reactants by forced convection to the
deposition region.
2. Transport of reactants by diffusion from the main gas
stream through the boundary layer to the wafer surface.
7. 3. Adsorption of reactants on the wafer surface.
4. Surface processes, including chemical decomposition
or reaction, surface migration to attachment sites (such as
atomic-level ledges and kinks), site incorporation, and
other surface reactions.
5. Desorption of byproducts from the surface.
6. Transport of byproducts by diffusion through the
boundary layer and back to the main gas stream.
7. Transport of byproducts by forced convection away
from the deposition region.
Conti…..
8. Conti………….
Advantages:
High growth rates possible
Can deposit materials which are hard to evaporate
Good reproducibility
Can grow epitaxial films
10. APPLICATION
Coatings –
Such as wear resistance,
Corrosion resistance,
High temperature protection,
Erosion protection and
Combinations thereof.
Semiconductors and related devices –
Integrated circuits,
Sensors and
Optoelectronic devices
11. Conti….
Dense structural parts – CVD can be used to
produce components that are difficult or
uneconomical to produce using conventional
fabrication techniques.
Dense parts produced via CVD are generally
thin walled and maybe deposited onto a
mandrel or former.
Optical Fibers – For telecommunications.
12. Conti ………………
Composites – Preforms can be infiltrated using CVD
techniques to produce ceramic matrix composites
such as carbon-carbon, carbon-silicon carbide and
silicon carbide-silicon carbide composites. This
process is sometimes called chemical vapour
infiltration or CVI.
Powder production – Production of novel powders
and fibers
Catalysts
Nano machines
13. Physical Vapour Déposition(PVD)
Physical Vapour Deposition (PVD) is fundamentally a
vaporization coating technique, involving transfer of
material on an atomic level.
It is an alternative process to electroplating
The process is similar to chemical vapour deposition (CVD)
except that the raw materials/precursors,
i.e. the material that is going to be deposited starts out in
solid form, whereas in CVD, the precursors are introduced
to the reaction chamber in the gaseous state.
14. Conti …….
• Working Concept
PVD processes are carried out under vacuum
conditions. The process involved four steps:
1.Evaporation
2.Transportation
3.Reaction
4.Deposition
15. Conti…
Reaction
In some cases coatings will consist of metal oxides,
nitrides, carbides and other such materials.
In these cases, the target will consist of the metal.
The atoms of metal will then react with the
appropriate gas during the transport stage.
For the above examples, the reactive gases may be
oxygen, nitrogen and methane.
In instances where the coating consists of the target
material alone, this step would not be part of the
process.
18. VARIENTS OF PVD
Evaporative
Deposition
In which the material
to be deposited is
heated to a high
vapor pressure by
electrically resistive
heating in "high"
vacuum
18
Evaporation
19. ELECTRON BEAM PHYSICAL
VAPOR DEPOSITION
In which the material to
be deposited is heated to
a high vapor pressure by
electron bombardment in
"high" vacuum.
Electron Beam Physical Vapour Deposition
20. SPUTTER DEPOSITION
In which a glow plasma discharge (usually localized
around the "target" by a magnet) bombards the material
sputtering some away as a vapor
Sputter deposition
21. CATHODIC ARC DEPOSITION
In which a high power arc directed at the target material
blasts away some into a vapor.
CAD
23. Importance of PVD Coatings
PVD coatings are deposited for numerous reasons.
Some of the main ones are:
Improved hardness and wear resistance
Reduced friction
Improved Oxidation resistance
The use of such coatings is aimed at improving
efficiency through improved performance and longer
component life.
They may also allow coated components to operate in
environments that the uncoated component would not
otherwise have been able to perform.
23
24. Advantages
Materials can be deposited with improved properties
compared to the substrate material
Almost any type of inorganic material can be used
as well as some kinds of organic materials
The process is more environmentally friendly than
processes such as electroplating.
24
25. DISADVANTAGES
It is a line of sight technique meaning that it is
extremely difficult to coat undercuts and similar
surface features
High capital cost
Some processes operate at high vacuums and
temperatures requiring skilled operators
Processes requiring large amounts of heat require
appropriate cooling systems
The rate of coating deposition is usually quite slow
26. Applications
PVD coatings are generally used to improve
Hardness, Wear Resistance And Oxidation
Resistance.
Thus, such coatings use in a wide range of
applications such as:
Aerospace
Automotive
Surgical/Medical
Dies and moulds for all manner of material
processing
Cutting tools
Fire arms 2626 Appications 26
27. DIFFERENCE BETWEEN PVD AND CVD
PVD uses Physical Processes
only
While CVD Primarily uses
Chemical processes
PVD typically uses a Pure
source material
while CVD uses a Mixed
source material
Difference