Pub Date : 2010-12-01DOI: 10.1109/ESCINANO.2010.5701011
S. A. Ibrahim, S. Sreekantan
TiO2 is one of the most semiconductors metal oxides used in many applications covering various field such as optoelectronics, medicine, sensor devices and catalyst [1]. Such applications are depended strongly on the crystalline structure, morphology and particle size [2]. Among the common crystalline form of titania, anatase is proven to be excellent photocatalyst compared to rutile and brookite.
{"title":"Effect of annealing atmosphere towards TiO2 nanoparticles on their photocatalytic performance in aquoues phase","authors":"S. A. Ibrahim, S. Sreekantan","doi":"10.1109/ESCINANO.2010.5701011","DOIUrl":"https://doi.org/10.1109/ESCINANO.2010.5701011","url":null,"abstract":"TiO2 is one of the most semiconductors metal oxides used in many applications covering various field such as optoelectronics, medicine, sensor devices and catalyst [1]. Such applications are depended strongly on the crystalline structure, morphology and particle size [2]. Among the common crystalline form of titania, anatase is proven to be excellent photocatalyst compared to rutile and brookite.","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":"21 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90409007","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}
Birefringent ND:YVO4 pumped by diode laser with fundamental wavelength of 1064 nm was used to pump nonlinear KTP crystal. Quartz crystals having natural birefringent property namely quarter and half waveplates were conducted in conjunction with the bulk of KTP to enhance the nonlinear beam. The result showed that half waveplate have electrical to optical conversion efficiency of 15.6 mW/A as compared to quarter waveplate is only 8.74 mW/A. The threshold current for SHG is found 5.3 A with half waveplate and 5.9 A with quarter waveplate. The high performance shown by half waveplate is realized due to the good mode matching after converting the polarization state.
{"title":"Nonlinear enhancement of the efficiency of the second harmonic generation","authors":"N. Bidin, N. E. Khamsan, Enass Mauludi, F. Noor","doi":"10.1063/1.3586996","DOIUrl":"https://doi.org/10.1063/1.3586996","url":null,"abstract":"Birefringent ND:YVO4 pumped by diode laser with fundamental wavelength of 1064 nm was used to pump nonlinear KTP crystal. Quartz crystals having natural birefringent property namely quarter and half waveplates were conducted in conjunction with the bulk of KTP to enhance the nonlinear beam. The result showed that half waveplate have electrical to optical conversion efficiency of 15.6 mW/A as compared to quarter waveplate is only 8.74 mW/A. The threshold current for SHG is found 5.3 A with half waveplate and 5.9 A with quarter waveplate. The high performance shown by half waveplate is realized due to the good mode matching after converting the polarization state.","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":"47 4 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78317431","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 emerging of nanotechnology lately has contributes to a numerous study in nano discipline especially in synthesizing nanomaterial, describing the mechanism and examining its behavior as to further utilizing it into a device. One of interesting material to be study is Zinc Oxide (ZnO) which is a well known (II–VI) compound semiconductor possessing hexagonal wurtzite structure. It has receives a lot of attention due to its wide band gap (3.37 eV), high exciton binding energy (60 meV at room temperature), transparent conductivity, bio-compatibility and bio-safety enabling ZnO to be employed as an optoelectronic device, gas sensor, catalyst, solar cell [1] and biomaterial. ZnO nanostructures such as nanorod, nanobelt, nanoflake, nanoflowers and nanoparticles exhibit different properties from the bulk. Hence, intensively research on the preparative techniques has been reported by many groups. Techniques based on physical vapor deposition such as pulsed laser deposition (PLD), sputtering and thermal decomposition usually require expensive equipment, highly cost maintenance and limited to small scale production. Whereas, wet chemical synthesis such as sol-gel, hydrothermal, sonochemical and precipitation often yields large-scale production, low cost equipment and inexpensive raw material.
{"title":"Formation of ZnO nanocrystalline via facile non-hydrolytic route","authors":"M. Ooi, A. Azlan, M. Abdullah","doi":"10.1063/1.3586943","DOIUrl":"https://doi.org/10.1063/1.3586943","url":null,"abstract":"The emerging of nanotechnology lately has contributes to a numerous study in nano discipline especially in synthesizing nanomaterial, describing the mechanism and examining its behavior as to further utilizing it into a device. One of interesting material to be study is Zinc Oxide (ZnO) which is a well known (II–VI) compound semiconductor possessing hexagonal wurtzite structure. It has receives a lot of attention due to its wide band gap (3.37 eV), high exciton binding energy (60 meV at room temperature), transparent conductivity, bio-compatibility and bio-safety enabling ZnO to be employed as an optoelectronic device, gas sensor, catalyst, solar cell [1] and biomaterial. ZnO nanostructures such as nanorod, nanobelt, nanoflake, nanoflowers and nanoparticles exhibit different properties from the bulk. Hence, intensively research on the preparative techniques has been reported by many groups. Techniques based on physical vapor deposition such as pulsed laser deposition (PLD), sputtering and thermal decomposition usually require expensive equipment, highly cost maintenance and limited to small scale production. Whereas, wet chemical synthesis such as sol-gel, hydrothermal, sonochemical and precipitation often yields large-scale production, low cost equipment and inexpensive raw material.","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":"10 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88295370","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 : 2010-12-01DOI: 10.1109/ESCINANO.2010.5701080
I. Gebeshuber
Structural colours refer to colours generated by nanostructures, with the characteristic dimension of the structures on the wavelength of the visible light (i.e., some hundreds of nanometers). Structural colouration occurs e.g., in CDs and DVDs, in soap bubbles or oil films on water, in butterfly wings [1] and in the wings of the carpenter bee [2].
{"title":"Nanocolours: Correlating structure with function","authors":"I. Gebeshuber","doi":"10.1109/ESCINANO.2010.5701080","DOIUrl":"https://doi.org/10.1109/ESCINANO.2010.5701080","url":null,"abstract":"Structural colours refer to colours generated by nanostructures, with the characteristic dimension of the structures on the wavelength of the visible light (i.e., some hundreds of nanometers). Structural colouration occurs e.g., in CDs and DVDs, in soap bubbles or oil films on water, in butterfly wings [1] and in the wings of the carpenter bee [2].","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":"105 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91251225","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}
Carbon Nanotubes based sensors are gaining popularity due to their high selectivity, sensitivity, fast response and recovery time, low operating temperatures and low power consumption. However, due to a strong sp2 carbon-carbon bonding within CNTs, the interaction between defect free CNT walls and gas molecules had been expected to be relatively weak and consequently, the electronic transport properties of the nanotubes are insensitive to the exposure of CNTs to various gas molecules.
{"title":"Ab initio study of topological defects in single walled carbon nanotubes and their effect on gas sensing mechanism","authors":"A. Srirangarajan, M. Upadhyay Kahaly","doi":"10.1063/1.3587023","DOIUrl":"https://doi.org/10.1063/1.3587023","url":null,"abstract":"Carbon Nanotubes based sensors are gaining popularity due to their high selectivity, sensitivity, fast response and recovery time, low operating temperatures and low power consumption. However, due to a strong sp2 carbon-carbon bonding within CNTs, the interaction between defect free CNT walls and gas molecules had been expected to be relatively weak and consequently, the electronic transport properties of the nanotubes are insensitive to the exposure of CNTs to various gas molecules.","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":"72 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90600656","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 : 2010-12-01DOI: 10.1109/ESCINANO.2010.5701081
Zhang Hua
Nanostructures have been attracted great attentation for many years due to their novel properties and advantages associated with the scale. In this plenary talk, I will present the artificial nanostructures and devices developed in our group. I will also discuss their applications in light source, light manipulation and high resolution imaging for next generation photonic technology.
{"title":"Nanostructures and devices","authors":"Zhang Hua","doi":"10.1109/ESCINANO.2010.5701081","DOIUrl":"https://doi.org/10.1109/ESCINANO.2010.5701081","url":null,"abstract":"Nanostructures have been attracted great attentation for many years due to their novel properties and advantages associated with the scale. In this plenary talk, I will present the artificial nanostructures and devices developed in our group. I will also discuss their applications in light source, light manipulation and high resolution imaging for next generation photonic technology.","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":"148 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77905402","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 benefits of developing Vertical MOSFETs compared with Planar MOSFETs have been recognized for past decades as the alternative for MOSFET downscaling to nanoscale. The prominent advantages of vertical MOSFETs are higher current drive, enhanced short channel immunity, higher reliability and increased packing density, thus promising new opportunities for scaling and advanced design [1–2]. In addition, Double Gate (DG) Vertical MOSFETs reduced the SCEs. The most promising concepts in this direction are double and surround gate MOSFETs [3].
{"title":"The influence of body-tied and floating-body structure in Double Gate Vertical n-MOSFET","authors":"N. Alias, M. Riyadi, K. Abdullah, R. Ismail","doi":"10.1063/1.3586972","DOIUrl":"https://doi.org/10.1063/1.3586972","url":null,"abstract":"The benefits of developing Vertical MOSFETs compared with Planar MOSFETs have been recognized for past decades as the alternative for MOSFET downscaling to nanoscale. The prominent advantages of vertical MOSFETs are higher current drive, enhanced short channel immunity, higher reliability and increased packing density, thus promising new opportunities for scaling and advanced design [1–2]. In addition, Double Gate (DG) Vertical MOSFETs reduced the SCEs. The most promising concepts in this direction are double and surround gate MOSFETs [3].","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":"10 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88671967","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 : 2010-12-01DOI: 10.1109/ESCINANO.2010.5701031
R. Mishr, Bahniman Ghosh, S. Banerjee
Investigation on Tunnel FETs in recent years have proved them to be better than conventional MOSFETs lower subthreshold swing, lower power consumption and their scaling is not limited by quantum mechanical effects [1]. Improvement in the on-current of TFETs has been proposed by the use of SiGe layer on the source side [2]. This paper investigates the effect of different Ge mole fractions on the performance of various benchmark circuits (inverter, inverter with constant load, 8 bit ripple carry adder (RCA), 5 stage ring oscillator, 10 stage NAND and NOR chain). A method of the Ion/Ioff ratio of TFETs with high Ge composition, by grading the Ge composition has also been suggested.
{"title":"Device and circuit performance evaluation and improvement of SiGe Tunnel FETs","authors":"R. Mishr, Bahniman Ghosh, S. Banerjee","doi":"10.1109/ESCINANO.2010.5701031","DOIUrl":"https://doi.org/10.1109/ESCINANO.2010.5701031","url":null,"abstract":"Investigation on Tunnel FETs in recent years have proved them to be better than conventional MOSFETs lower subthreshold swing, lower power consumption and their scaling is not limited by quantum mechanical effects [1]. Improvement in the on-current of TFETs has been proposed by the use of SiGe layer on the source side [2]. This paper investigates the effect of different Ge mole fractions on the performance of various benchmark circuits (inverter, inverter with constant load, 8 bit ripple carry adder (RCA), 5 stage ring oscillator, 10 stage NAND and NOR chain). A method of the Ion/Ioff ratio of TFETs with high Ge composition, by grading the Ge composition has also been suggested.","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":"19 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75880650","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}
Md. Eaqub Ali, U. Hashim, Md. Fazul Bari, T. S. Dhahi
Selective detection of specific DNA sequences is increasingly getting momentum in clinical diagnosis, pathology, genetics [1–3] and food analysis [4, 5]. The polymerase chain reaction (PCR) is a commonly used technique to amplify specific sequence segment in nearly all DNA-based assays [3]. The use of PCR addresses both the sensitivity issues and sample purification steps producing a large quantity DNA from as little as single copy. However, post- PCR analysis of PCR amplified DNA involves complex and time consuming electrophoresis, blot analysis or sequencing [3].
{"title":"Colorimetric sensor for label free detection of porcine PCR product","authors":"Md. Eaqub Ali, U. Hashim, Md. Fazul Bari, T. S. Dhahi","doi":"10.1063/1.3587027","DOIUrl":"https://doi.org/10.1063/1.3587027","url":null,"abstract":"Selective detection of specific DNA sequences is increasingly getting momentum in clinical diagnosis, pathology, genetics [1–3] and food analysis [4, 5]. The polymerase chain reaction (PCR) is a commonly used technique to amplify specific sequence segment in nearly all DNA-based assays [3]. The use of PCR addresses both the sensitivity issues and sample purification steps producing a large quantity DNA from as little as single copy. However, post- PCR analysis of PCR amplified DNA involves complex and time consuming electrophoresis, blot analysis or sequencing [3].","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":"11 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89943263","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 : 2010-12-01DOI: 10.1109/ESCINANO.2010.5701073
H. Sadeghzadeh, A. Morsali
Nano-structure of a new Pb(II) two-dimensional coordination polymer, [Pb(2-pyc) (N3)(H2O)]n (1), 2-Hpyc =2-pyridinecarboxylic acid} were synthesized by a sonochemical method. The new nano-structures were characterized by scanning electron microscopy, X-ray powder diffraction, IR spectroscopy and elemental analyses. Compound 1 was structurally characterized by single-crystal X-ray diffraction and consists of two-dimensional polymeric units. The thermal stability of compounds 1 was studied by thermal gravimetric and differential thermal analyses and compared. PbO nanopowders were obtained by calcinations of the nano-structure of compound 1 at 400°C. This study demonstrates the coordination polymers may be suitable precursors for the preparation of nanoscale materials and dependent on their packing they may produce different and interesting morphologies.
{"title":"Syntheses and characterization of a new nano-structure lead (II) coordination polymer by sonochemical method","authors":"H. Sadeghzadeh, A. Morsali","doi":"10.1109/ESCINANO.2010.5701073","DOIUrl":"https://doi.org/10.1109/ESCINANO.2010.5701073","url":null,"abstract":"Nano-structure of a new Pb(II) two-dimensional coordination polymer, [Pb(2-pyc) (N3)(H2O)]n (1), 2-Hpyc =2-pyridinecarboxylic acid} were synthesized by a sonochemical method. The new nano-structures were characterized by scanning electron microscopy, X-ray powder diffraction, IR spectroscopy and elemental analyses. Compound 1 was structurally characterized by single-crystal X-ray diffraction and consists of two-dimensional polymeric units. The thermal stability of compounds 1 was studied by thermal gravimetric and differential thermal analyses and compared. PbO nanopowders were obtained by calcinations of the nano-structure of compound 1 at 400°C. This study demonstrates the coordination polymers may be suitable precursors for the preparation of nanoscale materials and dependent on their packing they may produce different and interesting morphologies.","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":"1 1","pages":"1-1"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83085621","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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