A high numerical aperture (NA) lens is used in many applications that require tightly focused beams including microscopy. The Debye-Wolf electromagnetic diffraction integral describes focusing by high NA lenses. Using an eigenfunction expansion of this integral, we numerically obtain a pupil mask that generates an arbitrary, within the diffraction limit, intensity distribution at the Gaussian focal plane.
{"title":"Pupil masks for 2-D intensity synthesis in a high numerical aperture focusing system","authors":"Leelada Rattanavija, S. Sherif, W. Mohammed","doi":"10.1117/12.863847","DOIUrl":"https://doi.org/10.1117/12.863847","url":null,"abstract":"A high numerical aperture (NA) lens is used in many applications that require tightly focused beams including microscopy. The Debye-Wolf electromagnetic diffraction integral describes focusing by high NA lenses. Using an eigenfunction expansion of this integral, we numerically obtain a pupil mask that generates an arbitrary, within the diffraction limit, intensity distribution at the Gaussian focal plane.","PeriodicalId":245973,"journal":{"name":"Southeast Asian International Advances in Micro/Nano-technology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115389100","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}
Kollawat Somsri, Pataradawn Pinyopich, W. Mohammed
The vegetative in vitro propagation of Lemna minor stain SING-4 exposed to two different types of fluorescent light sources, Philips TLD 36W/54 and Toshiba FL40T8BRF/36, was studied. The liquid culture medium contained 4.43gl-1 phytohormone-free full-strength Murashige & Skoog (MS) basal medium with vitamins, 30gl-1 sucrose, and 1gl-1 MES. The results showed that both plant cultures had undergone normal asexual reproduction with an exponential increase trend. Cultures exposed to Toshiba FL40T8BRF/36 reproduced at a slightly faster rate while expressing significantly greener foliage (leaf color chart shade No.8), which indicates the presence of more chlorophyll, than cultures exposed to Philips TLD 36W/54 (leaf color chart shade No.4). The data obtained from our experiment reveals that light emitted from Toshiba FL40T8BRF/36 produces healthier and higher quality cultures.
{"title":"Effects of fluorescent lighting on in vitro micropropagation of Lemna minor","authors":"Kollawat Somsri, Pataradawn Pinyopich, W. Mohammed","doi":"10.1117/12.861349","DOIUrl":"https://doi.org/10.1117/12.861349","url":null,"abstract":"The vegetative in vitro propagation of Lemna minor stain SING-4 exposed to two different types of fluorescent light sources, Philips TLD 36W/54 and Toshiba FL40T8BRF/36, was studied. The liquid culture medium contained 4.43gl-1 phytohormone-free full-strength Murashige & Skoog (MS) basal medium with vitamins, 30gl-1 sucrose, and 1gl-1 MES. The results showed that both plant cultures had undergone normal asexual reproduction with an exponential increase trend. Cultures exposed to Toshiba FL40T8BRF/36 reproduced at a slightly faster rate while expressing significantly greener foliage (leaf color chart shade No.8), which indicates the presence of more chlorophyll, than cultures exposed to Philips TLD 36W/54 (leaf color chart shade No.4). The data obtained from our experiment reveals that light emitted from Toshiba FL40T8BRF/36 produces healthier and higher quality cultures.","PeriodicalId":245973,"journal":{"name":"Southeast Asian International Advances in Micro/Nano-technology","volume":"18 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126565118","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}
The band structures and density of state of tensile strained Ge/GeSiSn QWs with different Sn composition are investigated by using 6-band k.p method. The band lineups of Ge/GeSiSn are given. The hole energy dispersion curves and density of state are calculated. The results are helpful for Si photonics device design.
{"title":"Band structures and density of state of Ge/GeSiSn type-I quantum wells","authors":"W. Fan","doi":"10.1117/12.861346","DOIUrl":"https://doi.org/10.1117/12.861346","url":null,"abstract":"The band structures and density of state of tensile strained Ge/GeSiSn QWs with different Sn composition are investigated by using 6-band k.p method. The band lineups of Ge/GeSiSn are given. The hole energy dispersion curves and density of state are calculated. The results are helpful for Si photonics device design.","PeriodicalId":245973,"journal":{"name":"Southeast Asian International Advances in Micro/Nano-technology","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127719897","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}
The development of new products based on the immobilization of nanoparticles on fibers has recently received a growing interest from both the academic and industrial sectors. A wide range of nanoparticles and nano-structures can be immobilized on fibers, which brings new properties to the final product. In the present work, silver nanoparticle was immobilized on nylon fibers by immersed deposition method as an antimicrobial agent. Silver colloid was produced by chemical reduction of silver salt (silver nitrate) solution, in the presence of sodium citrate. Synthesis of silver colloid was carried out by using chemical reduction method at temperature of 95 and 100°C. The mixture was heated until color changed into pale yellow. UV-Vis spectrometry indicated formation of silver nanoparticles. UV-Vis analysis was reported that the absorption spectrum of silver nanoparticles showed a maximum between 420 and 450 nm. Characterization of silver nanoparticles was conducted using Fourier Transformed Infra Red (FTIR) spectroscopy, UV-Vis spectroscopy, particle size analyzer (PSA), and scanning electron microscope (SEM). It was found that silver nanoparticles forms aggregates on the surface of fiber, during deposition process. The size of aggregates varied from 19.9 ± 4.8 nm to 49.5 ± 12.5 nm. To evaluate the antimicrobial effects against microorganisms, we used representative microorganisms S. aureus. Silver nanoparticles showed antimicrobial activity reducing bacterial growth.
{"title":"Antimicrobial effect of nylon fiber immersed with nano-silver","authors":"A. Haryono, S. B. Harmami, D. Sondari","doi":"10.1117/12.862832","DOIUrl":"https://doi.org/10.1117/12.862832","url":null,"abstract":"The development of new products based on the immobilization of nanoparticles on fibers has recently received a growing interest from both the academic and industrial sectors. A wide range of nanoparticles and nano-structures can be immobilized on fibers, which brings new properties to the final product. In the present work, silver nanoparticle was immobilized on nylon fibers by immersed deposition method as an antimicrobial agent. Silver colloid was produced by chemical reduction of silver salt (silver nitrate) solution, in the presence of sodium citrate. Synthesis of silver colloid was carried out by using chemical reduction method at temperature of 95 and 100°C. The mixture was heated until color changed into pale yellow. UV-Vis spectrometry indicated formation of silver nanoparticles. UV-Vis analysis was reported that the absorption spectrum of silver nanoparticles showed a maximum between 420 and 450 nm. Characterization of silver nanoparticles was conducted using Fourier Transformed Infra Red (FTIR) spectroscopy, UV-Vis spectroscopy, particle size analyzer (PSA), and scanning electron microscope (SEM). It was found that silver nanoparticles forms aggregates on the surface of fiber, during deposition process. The size of aggregates varied from 19.9 ± 4.8 nm to 49.5 ± 12.5 nm. To evaluate the antimicrobial effects against microorganisms, we used representative microorganisms S. aureus. Silver nanoparticles showed antimicrobial activity reducing bacterial growth.","PeriodicalId":245973,"journal":{"name":"Southeast Asian International Advances in Micro/Nano-technology","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115022590","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}
Chonnipa Nilubol, Kiatnida Treerattrakoon, W. Mohammed
Nowadays, most activities require lesser physical actions, which could ultimately lead to accumulation of excessive body fat. The main roles of body fat are to store energy and acts as various kinds of insulators for the body. The thickness of fat layers can be measured to indicate fat-body weight ratio. Exceeding the body-mass index (BMI) could lead to many illnesses regarding obesity. Consequently, many studies have proposed various principles and techniques to measure the amount of fat within one's body. In this paper, infrared interactance in skin layers is studied for investigation of the influence of fat thickness upon photon travelling pattern in skin tissues using Monte Carlo model (MCML). Photon propagation is numerically simulated in simplified multi-layered tissues. The optical coefficients of each skin layers are accounted for different traveling paths of photons that move through random motion. The thickness of fat layer is varied, and changing in optical parameters is observed. Then the statistically obtained data are computed and analyzed for the effect of the fat layer upon reflection percentage using different wavelengths. The calculations have shown increment in the slope of change of reflection percentage versus fat thickness, when using infrared compare to visible light. This technique can be used to construct a mobile device that is capable of measuring the volume fraction of melanin and blood in the epidermis layer and dermis layer, to calculate for the necessary optical coefficients that would be necessary for measurement of fat thickness.
{"title":"Monte Carlo modeling (MCML) of light propagation in skin layers for detection of fat thickness","authors":"Chonnipa Nilubol, Kiatnida Treerattrakoon, W. Mohammed","doi":"10.1117/12.863536","DOIUrl":"https://doi.org/10.1117/12.863536","url":null,"abstract":"Nowadays, most activities require lesser physical actions, which could ultimately lead to accumulation of excessive body fat. The main roles of body fat are to store energy and acts as various kinds of insulators for the body. The thickness of fat layers can be measured to indicate fat-body weight ratio. Exceeding the body-mass index (BMI) could lead to many illnesses regarding obesity. Consequently, many studies have proposed various principles and techniques to measure the amount of fat within one's body. In this paper, infrared interactance in skin layers is studied for investigation of the influence of fat thickness upon photon travelling pattern in skin tissues using Monte Carlo model (MCML). Photon propagation is numerically simulated in simplified multi-layered tissues. The optical coefficients of each skin layers are accounted for different traveling paths of photons that move through random motion. The thickness of fat layer is varied, and changing in optical parameters is observed. Then the statistically obtained data are computed and analyzed for the effect of the fat layer upon reflection percentage using different wavelengths. The calculations have shown increment in the slope of change of reflection percentage versus fat thickness, when using infrared compare to visible light. This technique can be used to construct a mobile device that is capable of measuring the volume fraction of melanin and blood in the epidermis layer and dermis layer, to calculate for the necessary optical coefficients that would be necessary for measurement of fat thickness.","PeriodicalId":245973,"journal":{"name":"Southeast Asian International Advances in Micro/Nano-technology","volume":"132 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120865153","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}
We report the vibration reduction in the optically driven V-shaped AFM cantilever with 70 nm gold surface coating. The driving laser at 780 nm is intensity modulated at 1 kHz to 100 kHz and focused on the AFM cantilever surface. The cantilever vibration amplitude is monitored by HeNe probe laser. Two features are observed: high vibration amplitude of the cantilever (1) at several kHz modulation frequencies regime and (2) at around its mechanical resonance. In addition, we found that vibration at the resonance peak increases when the excitation spot is positioned farther from the free end of the cantilever.
{"title":"Analysis of photothermally induced vibration in metal coated AFM cantilever","authors":"Shahrul Kadri, H. Fujiwara, K. Sasaki","doi":"10.1117/12.861053","DOIUrl":"https://doi.org/10.1117/12.861053","url":null,"abstract":"We report the vibration reduction in the optically driven V-shaped AFM cantilever with 70 nm gold surface coating. The driving laser at 780 nm is intensity modulated at 1 kHz to 100 kHz and focused on the AFM cantilever surface. The cantilever vibration amplitude is monitored by HeNe probe laser. Two features are observed: high vibration amplitude of the cantilever (1) at several kHz modulation frequencies regime and (2) at around its mechanical resonance. In addition, we found that vibration at the resonance peak increases when the excitation spot is positioned farther from the free end of the cantilever.","PeriodicalId":245973,"journal":{"name":"Southeast Asian International Advances in Micro/Nano-technology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128606146","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}
Highly transparent nano-sized ZnxCd1-xS thin films have been prepared by chemical bath deposition (CBD) technique. In this paper investigations made on the preparation, characterization and photo luminescent (PL) studies of copper doped ZnxCd1-xS films are presented and discussed. The deposited films are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and PL spectroscopic techniques. The results of XRD and SEM studies exhibit the average grain size to lie in nano range. The results of optical absorption spectra recorded in the wavelength range 400 - 700 nm, the band gap value is calculated to be ~ 2.57 eV. The PL emission intensity is observed to be maximum for a particular concentration of copper acetate and it almost seizes thereafter.
{"title":"Photoluminescent studies of nanocrystalline thin films prepared by chemical bath deposition technique","authors":"A. Khare, S. Pandey","doi":"10.1117/12.863080","DOIUrl":"https://doi.org/10.1117/12.863080","url":null,"abstract":"Highly transparent nano-sized ZnxCd1-xS thin films have been prepared by chemical bath deposition (CBD) technique. In this paper investigations made on the preparation, characterization and photo luminescent (PL) studies of copper doped ZnxCd1-xS films are presented and discussed. The deposited films are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and PL spectroscopic techniques. The results of XRD and SEM studies exhibit the average grain size to lie in nano range. The results of optical absorption spectra recorded in the wavelength range 400 - 700 nm, the band gap value is calculated to be ~ 2.57 eV. The PL emission intensity is observed to be maximum for a particular concentration of copper acetate and it almost seizes thereafter.","PeriodicalId":245973,"journal":{"name":"Southeast Asian International Advances in Micro/Nano-technology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128682561","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}
Silicon nanoparticles are synthesized by microemulsion route. Silicon tetrachloride (SiCl4) is used as a silicon source. Meanwhile, hydrazine (N2H5OH), sodium hydroxide (NaOH), and polyethylene glycol (PEG) are used as reduction agent, stabilizer, and capping agent, respectively. In this study, the effects of different solvents (methanol, 1-butanol, 2-propanol, ethanol, acetone, and toluene) on the dispersion and the stabilization of silicon nanoparticles are studied intensively. The results in this study show that ethanol solvent has given smaller particle size, better size distribution, stable suspension and well dispersion of silicon nanoparticles. The diameter of synthesized silicon nanoparticles is in the range of 30-100 nm. Moreover, the absorption edge of silicon nanoparticles in ethanol is observed at a shorter wavelength compared to the others solvent.
{"title":"Effects of dispersion solvent on the formation of silicon nanoparticles synthesized via microemulsion route","authors":"W. Liong, S. Sreekantan, S. D. Hutagalung","doi":"10.1117/12.862594","DOIUrl":"https://doi.org/10.1117/12.862594","url":null,"abstract":"Silicon nanoparticles are synthesized by microemulsion route. Silicon tetrachloride (SiCl4) is used as a silicon source. Meanwhile, hydrazine (N2H5OH), sodium hydroxide (NaOH), and polyethylene glycol (PEG) are used as reduction agent, stabilizer, and capping agent, respectively. In this study, the effects of different solvents (methanol, 1-butanol, 2-propanol, ethanol, acetone, and toluene) on the dispersion and the stabilization of silicon nanoparticles are studied intensively. The results in this study show that ethanol solvent has given smaller particle size, better size distribution, stable suspension and well dispersion of silicon nanoparticles. The diameter of synthesized silicon nanoparticles is in the range of 30-100 nm. Moreover, the absorption edge of silicon nanoparticles in ethanol is observed at a shorter wavelength compared to the others solvent.","PeriodicalId":245973,"journal":{"name":"Southeast Asian International Advances in Micro/Nano-technology","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127507238","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}
Fuel oxidation reaction in anode electrode of solid oxide fuel cells (SOFC) is a multi-step reaction. The oxidation reaction begins with dissociative adsorption of fuel molecule on the surface of the electrode and subsequently diffusion of hydrogen atoms to the triple phase boundary sites, where the hydrogen atom combines with the oxygen ion and forms water; the final product of the fuel cell cycle. The electrons that release during this reaction will be transferred to the electrode materials and finally will be collected by current collector layer and transmitted to the external circuit. What people normally measure as the impedance of this circuit is summation of all the resistances in the circuit. By using palladium catalyst nanoparticles we will be able to alter the resistance against adsorption and diffusion step of the reaction and estimate the share of each step of the reaction in the whole electrode resistance. Our results reveal that presence of Pd catalyst nanoparticles cause a sharp decrease in the activation energy of the adsorption and diffusion step of the reaction, while the activation energy for charge transfer step does not change. Presence of Pd nanoparticles causes a significant decrease in anode impedance value and also separates the impedance spectra into two split portion. Incremental application of bias current on the anode electrode leads to gradual decrease in the resistance against both adsorption/diffusion and charge transfer step of the reaction. The reduction in the resistance is almost equal in percentage for both reaction steps. Studying impedance spectra for pure and Pd impregnated Ni/GDC anode at open circuit and under bias potential reveal that the impedance spectra for hydrogen oxidation reaction over pure Ni/GDC anode is mostly formed by resistance against adsorption and diffusion of the hydrogen species. Thus the main effort for enhancing the performance of the anode electrode should be focused on increasing the affinity of the electrode materials for adsorbing hydrogen species.
{"title":"Analysis of fuel oxidation reaction steps in Ni/GDC anode electrode of solid oxide fuel cells by using palladium nanoparticles","authors":"A. Babaei, S. Jiang","doi":"10.1117/12.863029","DOIUrl":"https://doi.org/10.1117/12.863029","url":null,"abstract":"Fuel oxidation reaction in anode electrode of solid oxide fuel cells (SOFC) is a multi-step reaction. The oxidation reaction begins with dissociative adsorption of fuel molecule on the surface of the electrode and subsequently diffusion of hydrogen atoms to the triple phase boundary sites, where the hydrogen atom combines with the oxygen ion and forms water; the final product of the fuel cell cycle. The electrons that release during this reaction will be transferred to the electrode materials and finally will be collected by current collector layer and transmitted to the external circuit. What people normally measure as the impedance of this circuit is summation of all the resistances in the circuit. By using palladium catalyst nanoparticles we will be able to alter the resistance against adsorption and diffusion step of the reaction and estimate the share of each step of the reaction in the whole electrode resistance. Our results reveal that presence of Pd catalyst nanoparticles cause a sharp decrease in the activation energy of the adsorption and diffusion step of the reaction, while the activation energy for charge transfer step does not change. Presence of Pd nanoparticles causes a significant decrease in anode impedance value and also separates the impedance spectra into two split portion. Incremental application of bias current on the anode electrode leads to gradual decrease in the resistance against both adsorption/diffusion and charge transfer step of the reaction. The reduction in the resistance is almost equal in percentage for both reaction steps. Studying impedance spectra for pure and Pd impregnated Ni/GDC anode at open circuit and under bias potential reveal that the impedance spectra for hydrogen oxidation reaction over pure Ni/GDC anode is mostly formed by resistance against adsorption and diffusion of the hydrogen species. Thus the main effort for enhancing the performance of the anode electrode should be focused on increasing the affinity of the electrode materials for adsorbing hydrogen species.","PeriodicalId":245973,"journal":{"name":"Southeast Asian International Advances in Micro/Nano-technology","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127525266","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}
Health is an important part of human life. Every person in this world want healthy body, in other words free of any disease. When seeing the pattern of human life today is high activity, always eat instant foods and lack of exercise makes a very bad human health from year to year. Therefore, there is need for the health revolution that can keep human health in order to remain in the condition is always healthy. Eat healthy foods four plus five perfect diligent exercise is the real solution to maintain health. In addition also advisable to always check each month to the doctor so that our health can be controlled. Most people underestimate it, especially the routine checks once a month to the doctor, therefore I created a simple research that aims to get people to mengonytrol health at any time without having to check into the doctor. By utilizing the resistance in the human body's health so we can be controlled. By using a simple tool to measure human resistance by using the concept of the bridge. Bridge circuit used to convert impedance variations into voltage variations. One advantage of this circuit is the voltage produced can vary around 0. This means strengthening can be used to raise the voltage level so as sensitivity to variations in impedance also increases. Another application is the impedance measurement accuracy. The bridge is the simplest and most widely used is the Wheatstone bridge circuit. This circuit is used for signal conditioning applications where a sensor can change the resistance value when the process variable is changed.
{"title":"Influence resistance on human health","authors":"A. M., Y. Bahtiar, M. Achdan, .. Sunarno","doi":"10.1117/12.863845","DOIUrl":"https://doi.org/10.1117/12.863845","url":null,"abstract":"Health is an important part of human life. Every person in this world want healthy body, in other words free of any disease. When seeing the pattern of human life today is high activity, always eat instant foods and lack of exercise makes a very bad human health from year to year. Therefore, there is need for the health revolution that can keep human health in order to remain in the condition is always healthy. Eat healthy foods four plus five perfect diligent exercise is the real solution to maintain health. In addition also advisable to always check each month to the doctor so that our health can be controlled. Most people underestimate it, especially the routine checks once a month to the doctor, therefore I created a simple research that aims to get people to mengonytrol health at any time without having to check into the doctor. By utilizing the resistance in the human body's health so we can be controlled. By using a simple tool to measure human resistance by using the concept of the bridge. Bridge circuit used to convert impedance variations into voltage variations. One advantage of this circuit is the voltage produced can vary around 0. This means strengthening can be used to raise the voltage level so as sensitivity to variations in impedance also increases. Another application is the impedance measurement accuracy. The bridge is the simplest and most widely used is the Wheatstone bridge circuit. This circuit is used for signal conditioning applications where a sensor can change the resistance value when the process variable is changed.","PeriodicalId":245973,"journal":{"name":"Southeast Asian International Advances in Micro/Nano-technology","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130258197","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}
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