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":null,"pages":null},"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}
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":null,"pages":null},"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}
Pub Date : 2010-12-01DOI: 10.1109/ESCINANO.2010.5700955
M. Osman, Taejin Kim
Thermal flow across the interface between two different materials is strongly affected by the differences in the electronic properties and vibrational modes of the two materials which give rise to the thermal interface resistance[1]. The thermal interface resistance results in a finite temperature discontinuity at the interface between the two materials. Reducing the thermal interface resistance between silicon chips and the packaging material is very critical for efficiently extracting heat and ensuring reliable operation of ICs. The large thermal conductivity of carbon nanotubes makes them very ideal for developing thermal switches and thermal interface materials [2]. We have investigated the thermal interface resistance between carbon nanotubes and silicon using molecular dynamic (MD) simulations.
{"title":"Effect of chirality on the silicon-carbon nanotube thermal interface resistance","authors":"M. Osman, Taejin Kim","doi":"10.1109/ESCINANO.2010.5700955","DOIUrl":"https://doi.org/10.1109/ESCINANO.2010.5700955","url":null,"abstract":"Thermal flow across the interface between two different materials is strongly affected by the differences in the electronic properties and vibrational modes of the two materials which give rise to the thermal interface resistance[1]. The thermal interface resistance results in a finite temperature discontinuity at the interface between the two materials. Reducing the thermal interface resistance between silicon chips and the packaging material is very critical for efficiently extracting heat and ensuring reliable operation of ICs. The large thermal conductivity of carbon nanotubes makes them very ideal for developing thermal switches and thermal interface materials [2]. We have investigated the thermal interface resistance between carbon nanotubes and silicon using molecular dynamic (MD) simulations.","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75966733","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":null,"pages":null},"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}
Pub Date : 2010-12-01DOI: 10.1109/ESCINANO.2010.5701097
Chua Soo Jin
Lighting has evolved over the last 150 years from the primordial use of fire, incandescence from filaments, to fluorescence and electrical discharge in gases. The use of each new material has led to the improvement in luminous efficacy by an order of magnitude. The incandescent light bulb, invented by Edison in 1879, will be phased out over the next few years as governments sought to ban its manufacture and use because of its low efficiency (< 5%) and to introduce green technology. The fluorescent lamp, which is widely used to replace the incandescent bulb with its use of mercury and presence of lead in some phosphors, is seen as an interim measure.
{"title":"Nanotechnology for solid-state lighting","authors":"Chua Soo Jin","doi":"10.1109/ESCINANO.2010.5701097","DOIUrl":"https://doi.org/10.1109/ESCINANO.2010.5701097","url":null,"abstract":"Lighting has evolved over the last 150 years from the primordial use of fire, incandescence from filaments, to fluorescence and electrical discharge in gases. The use of each new material has led to the improvement in luminous efficacy by an order of magnitude. The incandescent light bulb, invented by Edison in 1879, will be phased out over the next few years as governments sought to ban its manufacture and use because of its low efficiency (< 5%) and to introduce green technology. The fluorescent lamp, which is widely used to replace the incandescent bulb with its use of mercury and presence of lead in some phosphors, is seen as an interim measure.","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75748019","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 effects of physical properties and molecular structure of 200 nm polystyrene nanospheres (PSN) coated on silicon wafer exposed with daily solar flux were explored by field emission scanning electron microscope (FE-SEM) and attenuated total reflectance-Fourier transform infrared (ATR-FT-IR) spectrometer. It is revealed that the particles shape of PSN changed from spheric to eight-shaped after solar radiation. Reduction of the size as much as 29.5% after 5 minutes exposure was also observed in PSN particles. Changes in the molecular structure of the PSN particles after solar radiation were observed where some of the phenyl moieties of polystyrene broke down to facilitate carbon-carbon cross linkage bonds. These results demonstrated that the shrinkage of PSN particles is caused by the change of the molecular structure of polystyrene.
{"title":"Changes in physical properties and molecular structure of polystyrene nanospheres exposed with daily solar flux","authors":"P. J. Wibawa, M. Agam, Hadi Nur, H. Saim","doi":"10.1063/1.3586954","DOIUrl":"https://doi.org/10.1063/1.3586954","url":null,"abstract":"The effects of physical properties and molecular structure of 200 nm polystyrene nanospheres (PSN) coated on silicon wafer exposed with daily solar flux were explored by field emission scanning electron microscope (FE-SEM) and attenuated total reflectance-Fourier transform infrared (ATR-FT-IR) spectrometer. It is revealed that the particles shape of PSN changed from spheric to eight-shaped after solar radiation. Reduction of the size as much as 29.5% after 5 minutes exposure was also observed in PSN particles. Changes in the molecular structure of the PSN particles after solar radiation were observed where some of the phenyl moieties of polystyrene broke down to facilitate carbon-carbon cross linkage bonds. These results demonstrated that the shrinkage of PSN particles is caused by the change of the molecular structure of polystyrene.","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75268335","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.2010.5700970
Hendrik Oktendy Lintang, K. Kinbara, T. Yamashita, T. Aida
Self-repairable optoelectronic devices from a heat-induced structural damaged are potentially important for sensor [1] and display [2] applications. Recently, self-healing phenomena have attracted particular attention for developing sustainable structural materials [3], where extensive studies have been reported on polymeric materials capable of autonomous repairing macroscopic fractures or restoration lost mechanical strengths [4, 5]. On the other hand, for exploiting molecular devices that can self-repair elaborate functions, one may encounter different problems originating from much smaller size regimes. However, no rational strategies have yet been proposed for addressing this challenging issue. In our previous paper, when a phosphorescent columnar assembly of trinuclear gold(I) pyrazolate complex [Au3Pz3] is confined in the nanoscopic channel of hexagonal mesoporous silica [Au3Pz3]/silicahex (Fig. 1), upon stepwise heating from 20 °C to 140 °C in 45 min, the one-dimensional molecular assemblies are not only protected from thermal disruption but also strongly encouraged to self-recover to 100% in 5 h from a heat-induced structural damaged [6].
{"title":"Heating effect of a one-dimensional molecular assembly on self-repairing capability in the nanoscopic channels of mesoporous silica","authors":"Hendrik Oktendy Lintang, K. Kinbara, T. Yamashita, T. Aida","doi":"10.1109/ESCINANO.2010.5700970","DOIUrl":"https://doi.org/10.1109/ESCINANO.2010.5700970","url":null,"abstract":"Self-repairable optoelectronic devices from a heat-induced structural damaged are potentially important for sensor [1] and display [2] applications. Recently, self-healing phenomena have attracted particular attention for developing sustainable structural materials [3], where extensive studies have been reported on polymeric materials capable of autonomous repairing macroscopic fractures or restoration lost mechanical strengths [4, 5]. On the other hand, for exploiting molecular devices that can self-repair elaborate functions, one may encounter different problems originating from much smaller size regimes. However, no rational strategies have yet been proposed for addressing this challenging issue. In our previous paper, when a phosphorescent columnar assembly of trinuclear gold(I) pyrazolate complex [Au3Pz3] is confined in the nanoscopic channel of hexagonal mesoporous silica [Au3Pz3]/silicahex (Fig. 1), upon stepwise heating from 20 °C to 140 °C in 45 min, the one-dimensional molecular assemblies are not only protected from thermal disruption but also strongly encouraged to self-recover to 100% in 5 h from a heat-induced structural damaged [6].","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74068874","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.2010.5701011
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":null,"pages":null},"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}
Pub Date : 2010-12-01DOI: 10.1109/ESCINANO.2010.5700937
Pu Yong, Choy Kwang Leong, Hou Xianghui
With the ongoing miniaturization of devices such as FETs [1], the synthesis of ZnO NWs (building blocks) has attracted extensive research interest. ZnO NWs have been synthesized via different routes by many research groups [2–4]. In order for these building blocks to be incorporated into functional nano-devices, controlled synthesis of the ZnO NWs to obtain features such as the desired size, shape and alignment should be fulfilled. This is a rather challenging task. A better understanding of the growth mechanism of ZnO NWs may be helpful to resolve these uncertainties. However, the underlying mechanism for the growth of the ZnO NWs for both self-catalyzed and Au-catalyzed ZnO NWs, have not been well elucidated. In addition, there is no fully developed cohesive model that explains the growth mechanism of both self-catalyzed and Au-catalyzed ZnO NWs.
{"title":"Growth of Au-catalyzed and self-catalyzed ZnO nanowires using chemical vapor deposition technique","authors":"Pu Yong, Choy Kwang Leong, Hou Xianghui","doi":"10.1109/ESCINANO.2010.5700937","DOIUrl":"https://doi.org/10.1109/ESCINANO.2010.5700937","url":null,"abstract":"With the ongoing miniaturization of devices such as FETs [1], the synthesis of ZnO NWs (building blocks) has attracted extensive research interest. ZnO NWs have been synthesized via different routes by many research groups [2–4]. In order for these building blocks to be incorporated into functional nano-devices, controlled synthesis of the ZnO NWs to obtain features such as the desired size, shape and alignment should be fulfilled. This is a rather challenging task. A better understanding of the growth mechanism of ZnO NWs may be helpful to resolve these uncertainties. However, the underlying mechanism for the growth of the ZnO NWs for both self-catalyzed and Au-catalyzed ZnO NWs, have not been well elucidated. In addition, there is no fully developed cohesive model that explains the growth mechanism of both self-catalyzed and Au-catalyzed ZnO NWs.","PeriodicalId":6354,"journal":{"name":"2010 International Conference on Enabling Science and Nanotechnology (ESciNano)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83068017","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":null,"pages":null},"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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