Nanotechnology in the High School Curriculum: From Energy Conversion to Science Ethics. REU (RET) Nanotechnology Symposium 23 July 2004 12-2:30 PM. Kenneth Bowles Apopka High School NSF: NANOPAC REU Site Host: AMPAC-UCF. nanomachines. What Is All the Fuss About Nanotechnology?.
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REU (RET) Nanotechnology Symposium
23 July 2004
Apopka High School
NSF: NANOPAC REU Site
Any given search engine will produce 1.6 million hits
Nanotechnology is on the way to
becoming the FIRST trillion dollar market
Nanotechnology influences almost
every facet of every day life such as
security and medicine.
Physical science content standards 9-12 Conversion to Science Ethics
Structure of atoms
Structure and properties of matter
Motion and forces
Conservation of energy and increase in disorder (entropy)
Interactions of energy and matterDoes Nanotechnology Address Teaching Standards?
Science and technology standards
Science in personal and social perspectives
History and nature of science standards
An Example of a Nanotechnology Experiment, Which Addresses the Standards: Constructing Nanocrystalline Solar Cells Using the Dye Extracted From Citrus
Nanotitanium the Standards: Constructing Nanocrystalline Solar Cells Using the Dye Extracted From Citrus
Add 2-ml of 2,4 – Pentanedione (C5H8O2) to 100-ml of anhydrous isopropanol [ (CH3)2CHOH ] and stir covered for 20 minutes.
Add 6.04-ml of titanium isopropoxide (Ti[(CH3)2CHO]4 to the solution and stir for at least 2 hours.
Add 2.88-ml of distilled water and stir for another 2 hours.
The solution must then age for 12 hours at room temperature.
Since you now have a collodial suspension, the solvent must be evaporated off in an oven to collect the powder.
Measure out 10-ml of ethylene glycol
Weigh out 0.127-g of I2 and add it to the ethylene glycol and stir.
Weigh out 0.83 g of KI and add it to the same ethylene glycol.
Stir and sore in a dark container with a tight lid.Preparation of Nanotitanium and Electrolyte Solution
Main component: the Standards: Constructing Nanocrystalline Solar Cells Using the Dye Extracted From CitrusFluorine doped tin oxide conductive glass slidesNanocrystalline Solar Cells
Test the slide with a
determine which side is conductive
TiO2=electron acceptor; Iodide = electron donor;
Dye = photochemical pump
Materials: solar cell, Logger Pro, Graphical Analysis for Windows, Vernier LabPro, Voltage/Current probe, Pasco RC Circuit Board
V(t) = terminal voltage, e = EMF ( maximum voltage) , t = time, R = resistance(15KW), C = capacitance(1000mF)
t = time constant = RC =(15x103)(1000x10-6)=15 seconds
Equation for discharging a Capacitor
Re-arranging the equation algebraically to represent the slope formula.
What this basically says is that if you plot the natural log of the ratio of potentials versus the time the slope will equal the inverse of the time constant for this particular RC circuit.
The capacitor was first fully charged then
allowed to discharge. The EMF was determine to be
The voltage at t=0.
Using the examine function we can get various voltage and time data points from the graph.
The natural log function can then be applied mathematically.
For a normal 1.5 V battery
For the solar cell
For the solar cell
For the battery
The nanocrystalline solar cell could easily be used in a physics classroom to study capacitors as well as introduce the idea of harnessing the sun’s energy using nanotechnology.
Summary of teaching modules in a Teacher’s Guide for nanotechnology
Apopka oasis reading café
Based on a course offered at Yale
Dr. Sudipta Seal- Nano Initiative Coordinator for UCF – NSF REU(RET) Site Funding
Dr. Kumar and Dr. Peterson – UCF Mechanical, Materials & Aerospace Engineering –NSF RET Site Funding
Dr. Aldrin Sweeney – UCF College of Education
Karen Glidewell - AMPAC Administrative Offices