UROP Proceedings 2010-11

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Manufacture of Photoic Crystals and their SpectrumAdvisor : YANG Zhi Yu / PHYSStudent : CHEN Junxin / PHYS(UROP1100, Summer 2011)Photonic crystal is a kind of crystal with some special photonic properties, and one of themost significant properties is the full gap of photonic band, which can increase the efficiencyof instruments such as laser generator. The aim of this project is to explore possible ways tomanufacture full gap photonic crystal. The samples made by exposing AgI solution with opalsdirectly in the Xe-light, or tested with adding hydroquinone as redactor. However, no full gapor partial gap has yet been found. Another method is exposing AgI colloid in the Xe-light anddropping the remaining colloid on the opals is still being testing, and there have yet been apositive result. Further work will be continued in the next semester.Fabrication and Characterization of Three Dimensional True GapPhotonic Crystals in the Visible Light Wavelength RangeAdvisor : YANG Zhi Yu / PHYSStudent : LUO Yunqiu / PHYS-PP(UROP1100, Fall 2010)In this semester, main methods are explored for the fabrication of silica based true gapphotonic crystals. After testing, it is found that the Stober method is the best way ofsynthesizing silica nanoparticles, and N-(2-Aminoethyl)-3-Aminopropyl Silanetriol (NAOS)is a good material for bonding silver with silica nanoparticles surface. More work will bedone in controlling the size and amount of coated silver particles, and new methods will beexplored and developed.Photonic CrystalsAdvisor : YANG Zhi Yu / PHYSStudent : LUO Yunqiu / PHYS-PP(UROP1200, Spring 2011)Following the work done in previous semester, I have made progress in the approach of silvernanoparticles coating, and the combination method of annealing and latent of image inphotography. Although there have been some drawbacks in transmission spectra of thecombination method, the satisfactory improvement in reflection spectra is quite promising.Therefore, we will continue to focus on this method with variation of different experimentalparameters.23
Photonic CrystalsAdvisor : YANG Zhi Yu / PHYSStudent : LUO Yunqiu / PHYS-PP(UROP1300, Summer 2011)To conclude the work done on methods of silver coating on silica opals, althought thecombination method of latent image in photography and homemade silver nanoparticlesseems systematic and promising in design, it fail to demostrate good spectra result. Anothermethod, the colloidal silver iodide annealing, is relatively simple and it shows the bestimprovement on the partial gap so far.24
Page 4 and 5: Message from the PresidentUROP is a
Page 6 and 7: School ofScience
Page 8 and 9: After a month of screening, some pu
Page 10: Water Quality Survey for Hong Kong'
Page 14 and 15: Study of Blood Cell Development usi
Page 16 and 17: Department of MathematicsSpace Orbi
Page 18 and 19: Report on Lunar Crater ProjectAdvis
Page 20 and 21: Efficient Numerical Methods for Dyn
Page 22 and 23: Department of PhysicsNear-Field Sca
Page 24 and 25: Kinetic Monte Carlo Simulation of S
Page 26 and 27: Random Walk on Complex Network and
Page 30 and 31: School ofEngineering
Page 32 and 33: Techno-economic Analysis of Hydroge
Page 34 and 35: Heavy Metal Adsorption from Seawate
Page 36 and 37: Reformation of Antimicrobial Coatin
Page 38 and 39: Innovative Iron-based Process for O
Page 40 and 41: Department of Computer Science and
Page 42 and 43: An Investigation to Simplex Minimiz
Page 44 and 45: Distributive Name ServiceAdvisor :
Page 46 and 47: “Where To”: A Collaborative And
Page 48 and 49: Light Carving: Rich Object Scanning
Page 50 and 51: Sparse Matrix CompletionAdvisor : Y
Page 52 and 53: Optical Property Investigation of N
Page 54 and 55: Opto-Mechanical Oscillator with Dir
Page 56 and 57: Capture the FlagAdvisor : SHI Ling
Page 58 and 59: Building a Servo Robot SystemAdviso
Page 60 and 61: Department of Industrial Engineerin
Page 62: Digital Image Correlation Method fo
Page 65 and 66: Department of AccountingSchool of B
Page 67 and 68: Department of EconomicsThe Microeco
Page 69 and 70: Department of Information Systems,
Page 71 and 72: Financial Risk ManagementAdvisor :
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Page 75 and 76: Consumer NostalgiaAdvisor : HONG Ji
Page 77 and 78: Lay Theory of ObesityAdvisor : MUKH
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Multiculturalism, Social Judgments
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School of Humanities and Social Sci
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China/Africa Links ProjectAdvisor :
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Housing Policy, Home Ownership Sche
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Psychology of HappinessAdvisor : TA
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