Transcript The Use of Color Indicators for Plasma Enhanced Chemical

The Use of Color Indicators for
Plasma Enhanced Chemical Vapor
Deposition (PECVD) Films
Brian Lopas
Physics Teacher
Navasota High School, Navasota ISD
David Staack, Ph.D.
Assistant Professor
Department of Mechanical Engineering
Plasma Engineering and
Diagnostics Laboratory
Dr. David Staack
Tsung-Chan “Cliff” Tsai
Plasma Enhanced Chemical Vapor
Deposition (PECVD)
HV
Power Supply
Electrode
Floating substrate
Film (PMMA)
Helium
MMA
+ *- + - * + - -* + - * - - * - + * -- - + - - + - -* - + * + * + - +
Dielectric tube
Characteristics:
•Non-thermal plasma
•Adhesive to varies surfaces
•Sterilizer
Plasma jet
Applications

Suitable for live tissues
◦ Polymeric bandage on wounds
◦ Sterilizes infected area
Setup
Bubbler (MMA)
Flow
Controllers
Plasma Jet
Power
Supply
Multimeter
Substrate
(film produced here)
Equipment Setup
Thermocouple
Methyl Red (MR)
Cartridge heater
100°C
He + MR
He
He
Temperature
controller
Power Supply (HV)
Flow controller
Oscilloscope
He +
MR + MMA
Glass tube
He
Bubbler
1000:1 Probe
He + MMA
30 °C
Floating-electrode
DBD jet
MMA
Thermocouple
Modified Setup with temperature controller
Resistor
CLASSROOM
PROJECT
PRE-AP PHYSICS
UNIT: CONSERVATION OF ENERGY
Core Elements
Work
Power
(Ex. Lifting a tank
above your head;
launching an
arrow from a
bow)
(Ex. “Hulk smash”,
stopping an engine
turbine manually in
under 10 seconds)
Courtesy of nilgeek.wordpress.com
Conservation of Energy
(Ex. Converting lightning to mechanical energy; using arc
reactor energy to kinetic energy in laser beams)
Physics TEKS

(6) Science concepts. The student knows that
changes occur within a physical system and applies
the laws of conservation of energy and
momentum. The student is expected to:
◦ (A) investigate and calculate quantities using the work-energy
theorem in various situations; (Readiness Standard)
◦ (B) investigate examples of kinetic and potential energy and
their transformations; (Readiness Standard)
◦ (C) calculate the mechanical energy of, power generated
within, impulse applied to, and momentum of a physical system;
(Readiness Standard)
◦ (D) demonstrate and apply the laws of conservation of energy
and conservation of momentum in one dimension; (Readiness
Standard)
Day 1:

Prior to day 1 a pre-test will be administered

Review unit concepts
◦ Work
◦ Power
◦ Energy

Show engineering video clip(s)
Day 2: [D-day (Discussion day)]

Engineering design;

Define engineering;
Courtesy of Project Lead The Way

“Minds of the Round Table”
The Minds of the Round Table
Courtesy of dailyspeculations.com
Day 3:

Plasma demonstration;

Demonstrate shape memory material;
Courtesy of grand-illusions.com

Introduce the students to the engineering
design project
Day 4:

Explanation of goals and procedures for the
engineering design project;

Assignment of lab teams/partners;

Student exploration of materials and lab;

Students begin the engineering design
project
Days 5 and 6

Day 5:
◦ Students continue working on the lab;
◦ Students will be directing the labs themselves
with the teacher observing and guiding as
needed.

Day 6:
◦ Debrief the project;
◦ Administer the post-test
Courtesy of d.lib.ncsu.edu
Sample Questions
1. A mass of 20 kg is moved vertically upwards through a distance
of 9 m. If the gravitational acceleration is 9.8 m s-2, what is the work
done against gravity?
A. 88.2 J
B. 180 J
C. 1764 J
D. 196 J
2. What type of energy is used when the mass is stationary at the bottom of its
path, the spring is extended fully?
A. kinetic energy
B. potential energy
C. dark energy
D. no energy
Acknowledgements
Dr. David Staack
 Tsung-Chan “Cliff” Tsai
 Texas A&M University
 Mechanical Engineering Department

◦ Plasma Engineering and Diagnostics Laboratory
National Science Foundation (NSF)
 Enrichment Experience in Engineering (E3)

Questions?