CGHS Physics Trial HSC Examination 2008 Page 1 Student number ……………………….. Teacher …………………………………….. Cheltenham Girls High School 2008 Higher School Certificate Trial examination Physics TASK WEIGHTING: 35% General Instructions • Reading time – 5 minutes • Working time – 3 hours • Write using black or blue pen • Draw diagrams using pencil • Board-approved calculators may be used • A data-sheet‚ formulae sheets and Periodic Table are provided at the back of this paper Total marks –
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hosts and graphene sheets. The highly conductive nature of graphene and ease of incorporation into polymers and ceramics has also opened up the possibility of their use as transparent conductors. Graphene is a zero band gap semiconductor exhibiting large electric field effect. Allow doping with electrons or holes via electrostatic gating. The fact that graphene does not have a band gap poses a challenge for digital applications‚ but it’s high mobility is attractive for high frequency
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Technology—Applications the computer industry is already working on a nanoscale. The current production range is at 90 nil). 5 nm gates have been proven in laboratories‚ although they cannot he manufactured yet. By 2010 wordwide about $300 billion worth of semiconductor production oil! be nanotechnology based (including nanocomponents such as nanolayers. nanoscale treated in or other nanostructures). and by 2015 about S500 billion. Since. nanotechnology can reduce its basic features. CMOs will continue being used
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flow; used in some semiconductor diode circuits. 2. Incoherent Light: Light in which the electric and magnetic fields of photons are completely random in orientation. Incoherent light is typically emitted from light bulbs and LEDs. 3. Laser: Acronym for light amplification by stimulated emission of radiation. The laser produces a coherent source of light with a narrow beam and a narrow spectral bandwidth (about 2cm). Lasers in fiber optics are usually solid-state semiconductor types. Lasers are used
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called insulators. There is another category of materials whose ability to carry current‚ called conductivity‚ lies between that of conductor and insulators. Such materials are known as semi conductors. Germanium and silicon are two well-known semiconductors. 1.2 Atoms and elements Ordinary matter is made up of protons‚ neutrons‚ and electrons and is composed of atoms. An atom consists of a tiny nucleus made up of protons and neutrons‚ on the order of 20‚000 times smaller than the size of
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Engineering Sciences. I have studied circuit analysis‚ Logic Design‚ Computer Architecture‚ Electronics‚ Microprocessor Interfacing‚ Signal and Systems‚ Communication Systems‚ Engineering Electromagnetic‚ Optical Engineering‚ Instrumentation‚ Semiconductor Materials and Devices‚ Lasers and Applications‚ Wireless & Mobile Network‚ Optoelectronics‚ Optical Communication & Computing Motivation Applying for Your Major I am interested in Research in Display & Energy. I have done specialization in Laser
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electrical power. Other civilian and military applications in this research field include real-time wearable displays. As for conventional Si/III–V-based electronics‚ the basic device structure is based on semiconductor junctions and transistors. However‚ the device building block materials‚ the semiconductor‚ the electric contacts‚ and the dielectric/passivation layers‚ must now be transparent in the visible –a true challenge! Therefore‚ the first scientific goal of this technology must be to discover‚
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integrated circuits had doubled every year from the invention of the integrated circuit in 1958 until 1965 and predicted that the trend would continue "for at least ten years"". and "the 2010 update to the International Technology Roadmap for Semiconductors has growth slowing at the end of 2013‚ after which time transistor counts and densities are to double only every 3 years." In other words‚ you get approximately double the power‚ every three years‚ for the same price. So if you can buy 4GB
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3D TRANSISTORS TABLE OF CONTENT SR. NO. | TOPIC | PAGE NO. | 1 | Acknowledgment | 3 | 2 | Introduction to 3D transistors | 4 | 3 | Need of 3D transistors | 5 | 4 | Operation | 6 | 5 | Comparison with 2D transistors | 9 | 6 | Advantages | 10 | 7 | Limitations | 10 | 8 | Applications | 11 | 9 | Conclusion | 11 | 10 | References | 11 | | | | | | | | | | | | | | | | | | | | | | 3D TRANSISTORS There’s no denying
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1.iPrécis Katherine Bourzac‚ in her article “A Smarter Prosthetic for the Eye” (2012)‚ explains to readers that new prosthetics for the eye could reverse vision loss in some people with a simple implant. She supports this claim by explaining the technology and how it “combines infrared video-projection goggles with a small‚ wire-free chip implanted inside the retina” then by stating “[the implants] might restore more vision than other retinal prosthetics being worked on” (1). Bourzac’s purpose is
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