Pub Date : 2010-03-04DOI: 10.1109/INEC.2010.5425067
T. Suriwong, T. Thongtem, S. Thongtem
The utility of microwave heating and microwave generating of plasma as a synthetic technique toward the synthesis of Sb2Te3 is reported. The solid-state microwave synthetic method was studied the effects of irradiation times and cycles, and molar ratio of Sb:Te at a 900 W irradiated microwave power in order to determine phase purity of the reaction products. X-ray powder diffraction, field-emission scanning and transmission electron microscopic, including Raman spectroscopic techniques were used to investigate their phase, structures, surface morphologies and vibration characteristics. Their optical properties were also investigated by UV-vis and luminescent spectrophotometries.
{"title":"Solid-state microwave induced plasma synthesis of antimony telluride","authors":"T. Suriwong, T. Thongtem, S. Thongtem","doi":"10.1109/INEC.2010.5425067","DOIUrl":"https://doi.org/10.1109/INEC.2010.5425067","url":null,"abstract":"The utility of microwave heating and microwave generating of plasma as a synthetic technique toward the synthesis of Sb2Te3 is reported. The solid-state microwave synthetic method was studied the effects of irradiation times and cycles, and molar ratio of Sb:Te at a 900 W irradiated microwave power in order to determine phase purity of the reaction products. X-ray powder diffraction, field-emission scanning and transmission electron microscopic, including Raman spectroscopic techniques were used to investigate their phase, structures, surface morphologies and vibration characteristics. Their optical properties were also investigated by UV-vis and luminescent spectrophotometries.","PeriodicalId":6390,"journal":{"name":"2010 3rd International Nanoelectronics Conference (INEC)","volume":"39 1","pages":"1016-1017"},"PeriodicalIF":0.0,"publicationDate":"2010-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85062455","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 : 2010-03-04DOI: 10.1109/INEC.2010.5424836
K. Wong-ek, N. Nuntawong, K. Jaruwongrungsee, A. Tuantranont
In this work, we report a comparative study of quartz crystal microbalance sensors for Cardiac marker detection. These sensors are deposited with two different polymers, polyvinylchroride (PVC) and polyethylenemine (PEI) using spray coating technique for preparation of adsorption surface. The AFM measurements show that the maximum RMS roughness of coated films occur at around 20 seconds of deposition time, under spraying pressure of 1 bar using precursors concentration of 1% w/v. The results indicate that PEI is far superior to PVC in term of surface roughness which is corresponding to the presence of micropores. The hydrophilic properties between these two materials confirm that PEI have a higher potentials of attracting bimolecular due to a lower contact angle to a droplet of DI water. The absorption of proteins A (103 molecules) suspension on PEI surface is verified by a SEM image.
{"title":"Mass sensitive sensor, a comparative study between PVC and PEI coated on quartz crystal microbalance","authors":"K. Wong-ek, N. Nuntawong, K. Jaruwongrungsee, A. Tuantranont","doi":"10.1109/INEC.2010.5424836","DOIUrl":"https://doi.org/10.1109/INEC.2010.5424836","url":null,"abstract":"In this work, we report a comparative study of quartz crystal microbalance sensors for Cardiac marker detection. These sensors are deposited with two different polymers, polyvinylchroride (PVC) and polyethylenemine (PEI) using spray coating technique for preparation of adsorption surface. The AFM measurements show that the maximum RMS roughness of coated films occur at around 20 seconds of deposition time, under spraying pressure of 1 bar using precursors concentration of 1% w/v. The results indicate that PEI is far superior to PVC in term of surface roughness which is corresponding to the presence of micropores. The hydrophilic properties between these two materials confirm that PEI have a higher potentials of attracting bimolecular due to a lower contact angle to a droplet of DI water. The absorption of proteins A (103 molecules) suspension on PEI surface is verified by a SEM image.","PeriodicalId":6390,"journal":{"name":"2010 3rd International Nanoelectronics Conference (INEC)","volume":"9 1 1","pages":"1382-1383"},"PeriodicalIF":0.0,"publicationDate":"2010-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85531652","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 : 2010-03-04DOI: 10.1109/INEC.2010.5424672
Jiman Kim, Jinwoo Jung, Bomin Kwon, Juhong Park, Nam-Tae Kim, Yongsu Park, Jewon Lee, Hanjung Song
This paper presents design of the integrated chaotic neuron using 0.8 µm single poly CMOS technology, its dynamical behavior analysis. Proposed chaotic neuron consists of several op-amps, sample and hold circuits, a nonlinear function block for chaotic signal generation, a two-phase clock circuits and sigmoid output function block. From HSPICE simulation results of the circuit, approximated empirical equations is induced. Then the dynamical responses of the chaotic neuron such as bifurcation diagram, time series, Lyapunov exponent, and average firing rate are calculated with numerical analysis.
{"title":"Fully integrated circuit design Aihara's chaotic neuron model","authors":"Jiman Kim, Jinwoo Jung, Bomin Kwon, Juhong Park, Nam-Tae Kim, Yongsu Park, Jewon Lee, Hanjung Song","doi":"10.1109/INEC.2010.5424672","DOIUrl":"https://doi.org/10.1109/INEC.2010.5424672","url":null,"abstract":"This paper presents design of the integrated chaotic neuron using 0.8 µm single poly CMOS technology, its dynamical behavior analysis. Proposed chaotic neuron consists of several op-amps, sample and hold circuits, a nonlinear function block for chaotic signal generation, a two-phase clock circuits and sigmoid output function block. From HSPICE simulation results of the circuit, approximated empirical equations is induced. Then the dynamical responses of the chaotic neuron such as bifurcation diagram, time series, Lyapunov exponent, and average firing rate are calculated with numerical analysis.","PeriodicalId":6390,"journal":{"name":"2010 3rd International Nanoelectronics Conference (INEC)","volume":"28 1","pages":"258-259"},"PeriodicalIF":0.0,"publicationDate":"2010-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81631950","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 : 2010-03-04DOI: 10.1109/INEC.2010.5425203
Y. Mei, O. Schmidt
Ultra-thin membranes out of inorganic materials can be easily formed into various shapes and geometries on a single chip. Imagine the following experiment: A compressively strained layer is released from the substrate by e.g. selective underetching. If the layer is homogeneously strained, the film forms wrinkles, whereas it bends if there is a large enough strain gradient across the thickness of the film [1]. We exploit these two phenomena to create large periodic arrays of wrinkled nanochannel arrays and rolled-up micro-and nanotubes. The unique approach to transform a 2D layer system, defined by advanced deposition and lithography techniques, into a 3D object technology [2], opens entirely new perspectives towards reproducible, size scalable and multi-functional components for on-and off-chip applications [3]. We demonstrate ionic sensitive field-effect transistors [4], novel micro-and nanojet engines [5], optofluidic sensors [6], single microtube batteries [7], new concepts for lab-in-a-tube systems [8] and metamaterial fiber optics [9].
{"title":"Shaped nanomembranes: From fundamental perception to new concepts and applications","authors":"Y. Mei, O. Schmidt","doi":"10.1109/INEC.2010.5425203","DOIUrl":"https://doi.org/10.1109/INEC.2010.5425203","url":null,"abstract":"Ultra-thin membranes out of inorganic materials can be easily formed into various shapes and geometries on a single chip. Imagine the following experiment: A compressively strained layer is released from the substrate by e.g. selective underetching. If the layer is homogeneously strained, the film forms wrinkles, whereas it bends if there is a large enough strain gradient across the thickness of the film [1]. We exploit these two phenomena to create large periodic arrays of wrinkled nanochannel arrays and rolled-up micro-and nanotubes. The unique approach to transform a 2D layer system, defined by advanced deposition and lithography techniques, into a 3D object technology [2], opens entirely new perspectives towards reproducible, size scalable and multi-functional components for on-and off-chip applications [3]. We demonstrate ionic sensitive field-effect transistors [4], novel micro-and nanojet engines [5], optofluidic sensors [6], single microtube batteries [7], new concepts for lab-in-a-tube systems [8] and metamaterial fiber optics [9].","PeriodicalId":6390,"journal":{"name":"2010 3rd International Nanoelectronics Conference (INEC)","volume":"30 1","pages":"54-54"},"PeriodicalIF":0.0,"publicationDate":"2010-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81684503","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 : 2010-03-04DOI: 10.1109/INEC.2010.5424719
S. Kanjanachuchai, T. Limwongse
The complete formation sequence of InAs quantum dots (QDs) on lattice-mismatched InGaAs cross-hatch substrate has been identified. The InAs QDs sequentially form at the following locations: the dislocation free end, the dislocation T-section, the dislocation intersection, the [1–10] dislocation line, the [110] dislocation line and the flat area. Different surface energies at these locations give rise to QD formation at different effective thicknesses and times.
{"title":"Complete formation sequence of InAs quantum dots on lattice-mismatched InGaAs/GaAs substrates","authors":"S. Kanjanachuchai, T. Limwongse","doi":"10.1109/INEC.2010.5424719","DOIUrl":"https://doi.org/10.1109/INEC.2010.5424719","url":null,"abstract":"The complete formation sequence of InAs quantum dots (QDs) on lattice-mismatched InGaAs cross-hatch substrate has been identified. The InAs QDs sequentially form at the following locations: the dislocation free end, the dislocation T-section, the dislocation intersection, the [1–10] dislocation line, the [110] dislocation line and the flat area. Different surface energies at these locations give rise to QD formation at different effective thicknesses and times.","PeriodicalId":6390,"journal":{"name":"2010 3rd International Nanoelectronics Conference (INEC)","volume":"17 1","pages":"626-627"},"PeriodicalIF":0.0,"publicationDate":"2010-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81870955","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 : 2010-03-04DOI: 10.1109/INEC.2010.5424589
Meitang Liu, M. Pu, Hongwen Ma
A molecular dynamics study was performed to analyze the effects of different organic modifiers (OMs) on the atomic scale structure, binding energies and basal spacing of polylactic acid/organoclay nanocomposites. Each supercell comprising one molecule of polylactic acid (PLA), montmorillonite (MMT) with a cation exchange capacity (CEC) of 102mmol/100g organomodified with several quaternary alkylammonium ions (Quats) and two positively charged amino acids(arginine and lysine) was constructed during simulation tasks. According to the results, amino acids exhibit strong affinity to MMT surface and create considerable spacing room which is very important to intercalation procedure. In contrasting, ordinary Quats demonstrate weaker interaction with MMT unless they are carboxylic modified. This work gave an instructive suggestion for PLA nanocomposites preparation.
{"title":"Molecular dynamics simulation of polylactic acid/ organoclay nanocomposites: Effects of different organic modifiers","authors":"Meitang Liu, M. Pu, Hongwen Ma","doi":"10.1109/INEC.2010.5424589","DOIUrl":"https://doi.org/10.1109/INEC.2010.5424589","url":null,"abstract":"A molecular dynamics study was performed to analyze the effects of different organic modifiers (OMs) on the atomic scale structure, binding energies and basal spacing of polylactic acid/organoclay nanocomposites. Each supercell comprising one molecule of polylactic acid (PLA), montmorillonite (MMT) with a cation exchange capacity (CEC) of 102mmol/100g organomodified with several quaternary alkylammonium ions (Quats) and two positively charged amino acids(arginine and lysine) was constructed during simulation tasks. According to the results, amino acids exhibit strong affinity to MMT surface and create considerable spacing room which is very important to intercalation procedure. In contrasting, ordinary Quats demonstrate weaker interaction with MMT unless they are carboxylic modified. This work gave an instructive suggestion for PLA nanocomposites preparation.","PeriodicalId":6390,"journal":{"name":"2010 3rd International Nanoelectronics Conference (INEC)","volume":"33 1","pages":"148-149"},"PeriodicalIF":0.0,"publicationDate":"2010-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81965612","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 : 2010-03-04DOI: 10.1109/INEC.2010.5424508
Hyun Jong Lee, Eunji Jang, Saemi Park, P. Murthy, W. Koh
In this study, to improve efficiency and functionality of cell-based biosensor microarrays, we introduced nano-topographical features on cell adhesive region. Micropatterned surface was created by poly (ethylene glycol) (PEG) hydrogel microstructures via photolithography. Nano-topographical features were introduced using polymeric nanofibers which were produced by electrospinning technique. Combining PEG hydrogel microstructure and polymeric nanofibers created a clear contrast between adhesion resist hydrogel walls and adhesion promoting nanofiber surfaces. When mammalian cells were seeded onto micropatterned nanostructure, cells only selectively adhered to nanofiber maintaining their viability, while adherent cells were not present on the hydrogel wall.
{"title":"Cell-based biosensor system using micropatterned polymer nanofiber","authors":"Hyun Jong Lee, Eunji Jang, Saemi Park, P. Murthy, W. Koh","doi":"10.1109/INEC.2010.5424508","DOIUrl":"https://doi.org/10.1109/INEC.2010.5424508","url":null,"abstract":"In this study, to improve efficiency and functionality of cell-based biosensor microarrays, we introduced nano-topographical features on cell adhesive region. Micropatterned surface was created by poly (ethylene glycol) (PEG) hydrogel microstructures via photolithography. Nano-topographical features were introduced using polymeric nanofibers which were produced by electrospinning technique. Combining PEG hydrogel microstructure and polymeric nanofibers created a clear contrast between adhesion resist hydrogel walls and adhesion promoting nanofiber surfaces. When mammalian cells were seeded onto micropatterned nanostructure, cells only selectively adhered to nanofiber maintaining their viability, while adherent cells were not present on the hydrogel wall.","PeriodicalId":6390,"journal":{"name":"2010 3rd International Nanoelectronics Conference (INEC)","volume":"9 1","pages":"419-420"},"PeriodicalIF":0.0,"publicationDate":"2010-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82056111","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 : 2010-03-04DOI: 10.1109/INEC.2010.5424787
L. Supadee, W. Titiroongruang
3D surface topography of read / write head fabrication is difficult for lithography process. Photoresist deposition by using the conventional spin coating method is troubled. Spray coating is a replacement technique that eliminates the problem by producing micro-resist droplets that adhere firmly to the deposition location; thus, spray coating with optimal parameters from designed experiment is a suitable method for photoresist deposition on structures with high aspect ratio. By using proper nitrogen flow rate to spread out AZ4999 resist to be micro-droplet in the same time with proper traveling nozzle speed, the photoresist turbulence will perform good resist coverage over all surfaces. From design of experiment show the optimum condition for conformal deposition is 0.8 Bar at 117mm/s for nitrogen pressure and nozzle speed, respectively. Photoresist thickness was dropped at 30um far away from groove or edge of the head.
{"title":"Conformal photoresist coating for critical dimension improvement","authors":"L. Supadee, W. Titiroongruang","doi":"10.1109/INEC.2010.5424787","DOIUrl":"https://doi.org/10.1109/INEC.2010.5424787","url":null,"abstract":"3D surface topography of read / write head fabrication is difficult for lithography process. Photoresist deposition by using the conventional spin coating method is troubled. Spray coating is a replacement technique that eliminates the problem by producing micro-resist droplets that adhere firmly to the deposition location; thus, spray coating with optimal parameters from designed experiment is a suitable method for photoresist deposition on structures with high aspect ratio. By using proper nitrogen flow rate to spread out AZ4999 resist to be micro-droplet in the same time with proper traveling nozzle speed, the photoresist turbulence will perform good resist coverage over all surfaces. From design of experiment show the optimum condition for conformal deposition is 0.8 Bar at 117mm/s for nitrogen pressure and nozzle speed, respectively. Photoresist thickness was dropped at 30um far away from groove or edge of the head.","PeriodicalId":6390,"journal":{"name":"2010 3rd International Nanoelectronics Conference (INEC)","volume":"29 1","pages":"454-455"},"PeriodicalIF":0.0,"publicationDate":"2010-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84508009","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 : 2010-03-04DOI: 10.1109/INEC.2010.5425089
Chung-Chi Liau, L. Chao
Er doped ZnO (EZO) has been deposited on Si substrate at 500°C by reactive ion beam sputtering utilizing a capillaritron ion source at various oxygen partial flow rates. All the EZO films exhibit a preferred (002) growth direction. Maximum Er emission at 984 nm (4I11/2 to 4I15/2) was achieved from EZO deposited with 12.5% oxygen partial flow rate. XPS analysis of the O 1s core level shows an additional peak centered at 532.5 eV, indicating the presence of erbium oxide.
{"title":"Growth and characterization of Er doped ZnO prepared by reactive ion beam sputtering","authors":"Chung-Chi Liau, L. Chao","doi":"10.1109/INEC.2010.5425089","DOIUrl":"https://doi.org/10.1109/INEC.2010.5425089","url":null,"abstract":"Er doped ZnO (EZO) has been deposited on Si substrate at 500°C by reactive ion beam sputtering utilizing a capillaritron ion source at various oxygen partial flow rates. All the EZO films exhibit a preferred (002) growth direction. Maximum Er emission at 984 nm (4I11/2 to 4I15/2) was achieved from EZO deposited with 12.5% oxygen partial flow rate. XPS analysis of the O 1s core level shows an additional peak centered at 532.5 eV, indicating the presence of erbium oxide.","PeriodicalId":6390,"journal":{"name":"2010 3rd International Nanoelectronics Conference (INEC)","volume":"104 1","pages":"976-977"},"PeriodicalIF":0.0,"publicationDate":"2010-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85462724","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 : 2010-03-04DOI: 10.1109/INEC.2010.5424679
M. Tang, Shu-Tong Chang, Z. Pei, B. Hsieh
We investigated the novel thin film solar cell with nanoplate structure that can solve the conflict between the light absorption and the carrier transport in amorphous silicon thin film solar cell. This structure has n-type amorphous silicon nanoplate array on the substrate, and the p-layer and i-layer are sequentially grown along the surface of each n-type amorphous silicon nanoplate. Under sunlight illumination, the light is absorbed along the vertical direction of nanoplate. However, the carrier transport is along the horizontal direction. Therefore, nanoplate with the larger height can absorb most of the sunlight. In the meantime, the thickness of the solar cell is still thin enough for effective transport of photo-generated carriers.
{"title":"Nanoplate structure for photocurrent enhancement in thin film solar cell","authors":"M. Tang, Shu-Tong Chang, Z. Pei, B. Hsieh","doi":"10.1109/INEC.2010.5424679","DOIUrl":"https://doi.org/10.1109/INEC.2010.5424679","url":null,"abstract":"We investigated the novel thin film solar cell with nanoplate structure that can solve the conflict between the light absorption and the carrier transport in amorphous silicon thin film solar cell. This structure has n-type amorphous silicon nanoplate array on the substrate, and the p-layer and i-layer are sequentially grown along the surface of each n-type amorphous silicon nanoplate. Under sunlight illumination, the light is absorbed along the vertical direction of nanoplate. However, the carrier transport is along the horizontal direction. Therefore, nanoplate with the larger height can absorb most of the sunlight. In the meantime, the thickness of the solar cell is still thin enough for effective transport of photo-generated carriers.","PeriodicalId":6390,"journal":{"name":"2010 3rd International Nanoelectronics Conference (INEC)","volume":"36 1","pages":"271-272"},"PeriodicalIF":0.0,"publicationDate":"2010-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81660667","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：