Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230297
Fengming Sun, Xing Fu, Zhiyuan Zhou, Yong Wu, Chunyang Liu
Laser machining systems have been widely applied in micro-fabrication process development for 20 years. The current availability of nanosecond pulse UV laser sources is broadening the applications of laser micro-processing. In this work we present main features and potential applications of an integrative nanosecond pulse laser micro-machining numerical control system. Nanosecond Pulse Ultraviolet Laser (355nm) machining is an important method for developing micro structures. According to the special need for micro-machining, we designed a NC system based on PCI bus and FPGA technologies. This system consists of a 3-D motion platform including a displacement signal feedback system with accuracy of 1 um, a CCD (Charge Coupled Device) monitor and a workstation. After briefly describing the laser machining system, some micro structures were fabricated with different laser parameters. And a morphological characteristic is evaluated by optical microscopy. Keywords-NC system, nanosecond pulse UV laser,micromachining, silicon, ceramic, copper
{"title":"Study of Fabricated System Based on Nanosecond Pulse Laser","authors":"Fengming Sun, Xing Fu, Zhiyuan Zhou, Yong Wu, Chunyang Liu","doi":"10.1109/SOPO.2009.5230297","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230297","url":null,"abstract":"Laser machining systems have been widely applied in micro-fabrication process development for 20 years. The current availability of nanosecond pulse UV laser sources is broadening the applications of laser micro-processing. In this work we present main features and potential applications of an integrative nanosecond pulse laser micro-machining numerical control system. Nanosecond Pulse Ultraviolet Laser (355nm) machining is an important method for developing micro structures. According to the special need for micro-machining, we designed a NC system based on PCI bus and FPGA technologies. This system consists of a 3-D motion platform including a displacement signal feedback system with accuracy of 1 um, a CCD (Charge Coupled Device) monitor and a workstation. After briefly describing the laser machining system, some micro structures were fabricated with different laser parameters. And a morphological characteristic is evaluated by optical microscopy. Keywords-NC system, nanosecond pulse UV laser,micromachining, silicon, ceramic, copper","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"335 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80624255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230180
W. Peng, Hong-chen Qi, Yi-qiang Wu, Z. Zhang, D. Zhang
Now Eucalyptus wood begins to be used to pulp. The leaching rule of nano particles from E.camaldulensis Wood has an important significance in the forestry research and paper making engineering. Therefore, based on the single-factor method, the fresh E. camaldulensis shavings were treated by LiOH in a concentration range of 0.5%~25% g/mL and the duration is 3, 16 and 24 hours respectively. The extraction mass was analyzed and the results were discussed. The filtrates were analyzed by ZETA and SIZER. The results were following as: (1)The extraction mass arrived at the maximum value when concentration is about 17.5%. (2)The micro/nano particles in the diameter of 531-1720 nm, 531-17200 nm, 164-531nm is the most at the extracting time of 3h, 16h, 24h, respectively (2) The diameter the micro/nano particles of wood extractives and hemicellulose is chiefly between 164-1720 nm according to number fraction. However, there are micro particles in the diameter of more than 1720nm when LiOH concentration is biger than 15%. The micro/nano particles in the diameter of 531-1720 nm, 531-1720 nm, 164-531 nm is the most at the extracting time of 3h, 16h, 24h, respectively.
{"title":"Study on Dissolving Rules of Nano Particles from E. camaldulensis Wood Flour","authors":"W. Peng, Hong-chen Qi, Yi-qiang Wu, Z. Zhang, D. Zhang","doi":"10.1109/SOPO.2009.5230180","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230180","url":null,"abstract":"Now Eucalyptus wood begins to be used to pulp. The leaching rule of nano particles from E.camaldulensis Wood has an important significance in the forestry research and paper making engineering. Therefore, based on the single-factor method, the fresh E. camaldulensis shavings were treated by LiOH in a concentration range of 0.5%~25% g/mL and the duration is 3, 16 and 24 hours respectively. The extraction mass was analyzed and the results were discussed. The filtrates were analyzed by ZETA and SIZER. The results were following as: (1)The extraction mass arrived at the maximum value when concentration is about 17.5%. (2)The micro/nano particles in the diameter of 531-1720 nm, 531-17200 nm, 164-531nm is the most at the extracting time of 3h, 16h, 24h, respectively (2) The diameter the micro/nano particles of wood extractives and hemicellulose is chiefly between 164-1720 nm according to number fraction. However, there are micro particles in the diameter of more than 1720nm when LiOH concentration is biger than 15%. The micro/nano particles in the diameter of 531-1720 nm, 531-1720 nm, 164-531 nm is the most at the extracting time of 3h, 16h, 24h, respectively.","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"34 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81869170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230157
Y. Lin, Y. M. Yang, X. W. Li, Z. Huang
Plasma enhanced chemical vapor deposition (PECVD), one of the most widely used techniques in modern microelectronics, is firstly employed to prepare ferromagnetic ZnO-based and TiO2-based magnetic semiconductors at low deposition temperature without any carrier gas. ZnO-based films show excellent photoluminescence at room temperature. All doped oxide films show room-temperature ferromagnetic behaviors by using superconducting quantum interference device measurements. Magnetic ions incorporating into host lattice and the exclusion of secondary phase in films are confirmed by microstructure analysis and magnetic results, such as XRD, XPS, PL and FC/ZFC. In order to gain insights into the effect of oxygen vacancies or nitrogen implantation on ferromagnetism of oxide-based semiconductors, all films were annealed in N2 ambience at 900 or treated in NH3 or O2 plasma at 350 . The results indicated the crucial role of hole-carriers or oxygenvacancies playing in the ferromagnetic coupling between magnetic ions in oxide-based semiconductors.
{"title":"ZnO- and TiO2-Based Semiconductor Films Prepared by Plasma Enhanced CVD Without any Carrier Gas","authors":"Y. Lin, Y. M. Yang, X. W. Li, Z. Huang","doi":"10.1109/SOPO.2009.5230157","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230157","url":null,"abstract":"Plasma enhanced chemical vapor deposition (PECVD), one of the most widely used techniques in modern microelectronics, is firstly employed to prepare ferromagnetic ZnO-based and TiO2-based magnetic semiconductors at low deposition temperature without any carrier gas. ZnO-based films show excellent photoluminescence at room temperature. All doped oxide films show room-temperature ferromagnetic behaviors by using superconducting quantum interference device measurements. Magnetic ions incorporating into host lattice and the exclusion of secondary phase in films are confirmed by microstructure analysis and magnetic results, such as XRD, XPS, PL and FC/ZFC. In order to gain insights into the effect of oxygen vacancies or nitrogen implantation on ferromagnetism of oxide-based semiconductors, all films were annealed in N2 ambience at 900 or treated in NH3 or O2 plasma at 350 . The results indicated the crucial role of hole-carriers or oxygenvacancies playing in the ferromagnetic coupling between magnetic ions in oxide-based semiconductors.","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"137 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74520457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230288
Wen Chen, P. Shi, Yinhe Liu, Cunlin Zhang
Nano-zirconia powders which were surface-modified with silane coupling reagent WD70 were prepared in order to disperse homogeneously in photosensitive material in this investigation. Grain size and grain phase of nano-zirconia were obtained by XRD. Results given by FT-IR showed WD70 was jointed on the surface of nano-zirconia through both physical adsorption and chemical binding after de-methanol reaction between the methoxyl groups of WD70 and the hydroxy groups on the surface of nano-zirconia. Surface-modified nanozirconia was applied to the Computer To Plate (CTP) plates of thermal cross linking type, and it was found that the adding of nanozirconia could shorten the after-bake time of the plates.
采用硅烷偶联剂WD70对纳米氧化锆粉体进行表面改性，使其在光敏材料中分散均匀。采用XRD测定了纳米氧化锆的晶粒尺寸和相。FT-IR结果表明，WD70的甲氧基与纳米氧化锆表面的羟基发生脱甲醇反应后，通过物理吸附和化学结合在纳米氧化锆表面形成了节理。将表面改性纳米氧化锆应用于热交联型CTP (Computer to Plate)版材中，发现纳米氧化锆的加入可以缩短CTP版材的后焙时间。
{"title":"Preparation of Surface-Modified Nanozirconia and Its Application in CTP Plates","authors":"Wen Chen, P. Shi, Yinhe Liu, Cunlin Zhang","doi":"10.1109/SOPO.2009.5230288","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230288","url":null,"abstract":"Nano-zirconia powders which were surface-modified with silane coupling reagent WD70 were prepared in order to disperse homogeneously in photosensitive material in this investigation. Grain size and grain phase of nano-zirconia were obtained by XRD. Results given by FT-IR showed WD70 was jointed on the surface of nano-zirconia through both physical adsorption and chemical binding after de-methanol reaction between the methoxyl groups of WD70 and the hydroxy groups on the surface of nano-zirconia. Surface-modified nanozirconia was applied to the Computer To Plate (CTP) plates of thermal cross linking type, and it was found that the adding of nanozirconia could shorten the after-bake time of the plates.","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"9 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78444084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230229
Tao Hu, Zhiwei Lv, Yong Zhao, Xinyuan Zhang, Bo Yuan
Principle, structure design, and experimental setup of a fiber Bragg grating (FBG) sensor with a simple signal detection method for demodulation of resonance wavelength shift of the FBG are introduced, which uses a cascade self-demodulated fiber Bragg grating pair attached respectively on the upper and lower surface of a pendulum-type cantilever element instead of a twice reflection FBG pair structure for both parameter sensing and wavelength shift signal demodulating. In addition, crosssensitivity effect of FBG-based sensor automatically solved due to a differential signal process method. With this demodulation method, current, and vibration measurement experiments are carried out. Experimental results indicate that current measurement error of ±1mA can be obtained within the whole range from 0 to 400mA, vibration measurement are also obtained based on the present experiment setup. Keywordsfiber Bragg grating sensor; current measurement; gravity pendulum; electromagnetic force
{"title":"Fiber Bragg Grating Sensor with a Simple Demodulation Method","authors":"Tao Hu, Zhiwei Lv, Yong Zhao, Xinyuan Zhang, Bo Yuan","doi":"10.1109/SOPO.2009.5230229","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230229","url":null,"abstract":"Principle, structure design, and experimental setup of a fiber Bragg grating (FBG) sensor with a simple signal detection method for demodulation of resonance wavelength shift of the FBG are introduced, which uses a cascade self-demodulated fiber Bragg grating pair attached respectively on the upper and lower surface of a pendulum-type cantilever element instead of a twice reflection FBG pair structure for both parameter sensing and wavelength shift signal demodulating. In addition, crosssensitivity effect of FBG-based sensor automatically solved due to a differential signal process method. With this demodulation method, current, and vibration measurement experiments are carried out. Experimental results indicate that current measurement error of ±1mA can be obtained within the whole range from 0 to 400mA, vibration measurement are also obtained based on the present experiment setup. Keywordsfiber Bragg grating sensor; current measurement; gravity pendulum; electromagnetic force","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"191 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76052699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230304
Yanbin Men, Li Wang, Peng Zhang, J. Tian, Xinping Zhang, Fang Wen
The experiment results of continuous wave (CW) and Q- switching running laser using semiconductor laser pumped Yb:YAG crystal have been achieved. The internal cavity second- harmonic generation of laser diode pumped Yb:YAG crystal has beenobtained with a LBO and a stable green light of 515nm has been output.
{"title":"Q-Switching Yb:YAG Laser and Intracavity SHG","authors":"Yanbin Men, Li Wang, Peng Zhang, J. Tian, Xinping Zhang, Fang Wen","doi":"10.1109/SOPO.2009.5230304","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230304","url":null,"abstract":"The experiment results of continuous wave (CW) and Q- switching running laser using semiconductor laser pumped Yb:YAG crystal have been achieved. The internal cavity second- harmonic generation of laser diode pumped Yb:YAG crystal has beenobtained with a LBO and a stable green light of 515nm has been output.","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"433 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76667385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230312
Ya-liang Liu, X. Xiao, X. Shan, S. Fu
Advances of laser have opened new possibilities in the field of detection. The technology of laser-generated surface acoustic waves (LSAWs) is one of the applications of laser. According to the thermal-elastic theory, surface acoustic waves (SAWs) could be generated through rapid heating and subsequent expansion of the surface layer when the laser pulse irradiates on the surface of sample. The abundant information of sample surface could be obtained by testing and analyzing the SAW waveforms. The SAWs are dispersive when the waves propagate on the layered film structure. The Young's Modulus (E) of the film can be determined accurately and conveniently by matching the experimental dispersion curve with the theoretical curves. An experimental system is constructed to detect the E value of a low-k film which is deposited on the silicon (100) substrate by the method of LSAWs.
{"title":"Young's Modulus Detection for the Low-k Film by Laser-Generated SAWs","authors":"Ya-liang Liu, X. Xiao, X. Shan, S. Fu","doi":"10.1109/SOPO.2009.5230312","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230312","url":null,"abstract":"Advances of laser have opened new possibilities in the field of detection. The technology of laser-generated surface acoustic waves (LSAWs) is one of the applications of laser. According to the thermal-elastic theory, surface acoustic waves (SAWs) could be generated through rapid heating and subsequent expansion of the surface layer when the laser pulse irradiates on the surface of sample. The abundant information of sample surface could be obtained by testing and analyzing the SAW waveforms. The SAWs are dispersive when the waves propagate on the layered film structure. The Young's Modulus (E) of the film can be determined accurately and conveniently by matching the experimental dispersion curve with the theoretical curves. An experimental system is constructed to detect the E value of a low-k film which is deposited on the silicon (100) substrate by the method of LSAWs.","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"361 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75422910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230177
T. Yan, P. An, Liquan Shen, Qian Zhang, Zhaoyang Zhang
on the research of optimum bit allocation with rate-distortion theory[15], however the algorithm is too complicated to be implemented actually. Besides, the algorithm just aims at the binocular video transmission, so that it is difficult for it to solve the bit allocation and rate control in multi-view video coding. It is necessary to study the efficient and relevant algorithm of bit allocation and RC. In this paper, we improve the RDmodel to better predict the bit rate firstly. Then we propose a multi-view video oriented frame level RC algorithm which is based on the character of MVC and requirement of RC. Experimental results show that compared with the Multi-view video coding using fixed quantization parameter (QP), our multi-view video oriented bit allocation and RC algorithm in which the parameters are predefined can control the bit rate more efficiently. II. STRUCTURE OF RATE CONTROL
{"title":"Rate Control Algorithm for Multi-View Video Coding Based on Correlation Analysis","authors":"T. Yan, P. An, Liquan Shen, Qian Zhang, Zhaoyang Zhang","doi":"10.1109/SOPO.2009.5230177","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230177","url":null,"abstract":"on the research of optimum bit allocation with rate-distortion theory[15], however the algorithm is too complicated to be implemented actually. Besides, the algorithm just aims at the binocular video transmission, so that it is difficult for it to solve the bit allocation and rate control in multi-view video coding. It is necessary to study the efficient and relevant algorithm of bit allocation and RC. In this paper, we improve the RDmodel to better predict the bit rate firstly. Then we propose a multi-view video oriented frame level RC algorithm which is based on the character of MVC and requirement of RC. Experimental results show that compared with the Multi-view video coding using fixed quantization parameter (QP), our multi-view video oriented bit allocation and RC algorithm in which the parameters are predefined can control the bit rate more efficiently. II. STRUCTURE OF RATE CONTROL","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"42 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75456996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230243
Li Tan, Jie Liu, Xuezhi Hong, Biao Chen
We propose and experimentally demonstrate bidirectional transmission of signal in WDM-PON using Amplitude Shift Keying (ASK) modulation based on a novel polarization multiplexing approach. Polarizing beam splitter (PBS) is used for regulating extinction ratio (ER) and achieving good optical signal-to-noise ratio (SNR) for signal transmission. KeywordsASK; PBS;WDM
{"title":"WDM-PON Using ASK Modulation with Polarization Multiplexing","authors":"Li Tan, Jie Liu, Xuezhi Hong, Biao Chen","doi":"10.1109/SOPO.2009.5230243","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230243","url":null,"abstract":"We propose and experimentally demonstrate bidirectional transmission of signal in WDM-PON using Amplitude Shift Keying (ASK) modulation based on a novel polarization multiplexing approach. Polarizing beam splitter (PBS) is used for regulating extinction ratio (ER) and achieving good optical signal-to-noise ratio (SNR) for signal transmission. KeywordsASK; PBS;WDM","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"20 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91306299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2009-09-01DOI: 10.1109/SOPO.2009.5230137
Jiandong Hu, Xiangyang Zhao
We present an improved centroid algorithm designed for an economical, high-performance biomolecular interaction analyzer, which is based on the use of TSPR1k23 biosensors and composed of a microflow cell, a thermoelectric cooler (TEC), a clamp, a touch-screen monitor, three microprocessors and a photoelectronic conversion device. The proposed algorithm can be applied to asymmetric surfac plasmon resonance (SPR) curves often obtained by a gold-based SPR biochemical analyzer and evaluated by the numerical calculations. The validity and efficiency of the algorithm were demonstrated by a comparison of the numerical calculation results with the experimental results obtained by using the SPR biochemical analyzer to measure the ethanol solutions with five concentrations of 10, 20, 30, 40, 50 wt.%. The sensitivity of the SPR biochemical analyzer was fairly enhanced by the improved centroid algorithm that we argued in this work even without the assistance of a laptop computer. In comparsion with the first-order centroid algorithm, the experimental results further showed that the errors of measurement could be reduced when such an improved centroid algorithm was used.
{"title":"An Improved Centroid Algorithm for a Surface Plasmon Resonance Bioanalyzer Using Microprocessors","authors":"Jiandong Hu, Xiangyang Zhao","doi":"10.1109/SOPO.2009.5230137","DOIUrl":"https://doi.org/10.1109/SOPO.2009.5230137","url":null,"abstract":"We present an improved centroid algorithm designed for an economical, high-performance biomolecular interaction analyzer, which is based on the use of TSPR1k23 biosensors and composed of a microflow cell, a thermoelectric cooler (TEC), a clamp, a touch-screen monitor, three microprocessors and a photoelectronic conversion device. The proposed algorithm can be applied to asymmetric surfac plasmon resonance (SPR) curves often obtained by a gold-based SPR biochemical analyzer and evaluated by the numerical calculations. The validity and efficiency of the algorithm were demonstrated by a comparison of the numerical calculation results with the experimental results obtained by using the SPR biochemical analyzer to measure the ethanol solutions with five concentrations of 10, 20, 30, 40, 50 wt.%. The sensitivity of the SPR biochemical analyzer was fairly enhanced by the improved centroid algorithm that we argued in this work even without the assistance of a laptop computer. In comparsion with the first-order centroid algorithm, the experimental results further showed that the errors of measurement could be reduced when such an improved centroid algorithm was used.","PeriodicalId":6416,"journal":{"name":"2009 Symposium on Photonics and Optoelectronics","volume":"4 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90641848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：