Pub Date : 2013-08-01DOI: 10.1109/OMN.2013.6659104
Xiaojie Xue, Takenobu Suzuki, Y. Ohishi
The oleate-capped α-NaYF4:Nd3+ nanocrystals (NCs) were synthesized via solvothermal method. By a ligand exchange method, the oleate-capped NCs could be changed to citrate-capped samples which can be dispersed in polar solvents. By the relation between the measured emission lifetime and effective refractive indices of the composites containing NCs, the local field effect was investigated. It was found that the preferable model would change from the real cavity model to virtual cavity model when the particle size reduced to 6 nm in nonpolar solvent system, but the preferable model kept being real cavity model in polar solvent system.
{"title":"Local field effect on Nd3+-doped α-NaYF4 nanocrystals in liquids","authors":"Xiaojie Xue, Takenobu Suzuki, Y. Ohishi","doi":"10.1109/OMN.2013.6659104","DOIUrl":"https://doi.org/10.1109/OMN.2013.6659104","url":null,"abstract":"The oleate-capped α-NaYF4:Nd3+ nanocrystals (NCs) were synthesized via solvothermal method. By a ligand exchange method, the oleate-capped NCs could be changed to citrate-capped samples which can be dispersed in polar solvents. By the relation between the measured emission lifetime and effective refractive indices of the composites containing NCs, the local field effect was investigated. It was found that the preferable model would change from the real cavity model to virtual cavity model when the particle size reduced to 6 nm in nonpolar solvent system, but the preferable model kept being real cavity model in polar solvent system.","PeriodicalId":6334,"journal":{"name":"2013 International Conference on Optical MEMS and Nanophotonics (OMN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83572426","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 : 2013-08-01DOI: 10.1109/omn.2013.6659066
Hiroo Iwata
New methodology is required to set appropriate cells at right position to prepare 3 dimensional tissue in regenerative medicine. We have been synthesized single-stranded DNA-conjugated poly(ethylene) glycol-phospholipid (ssDNA-PEG-lipid), which is the amphiphilic conjugate of PEG-lipid and single-stranded DNA and examined as a cell adhesive. New methodology using ssDNA-PEG-lipid as a cell adhesive will be presented. It enables to display cells in certain area on a glass plate and to regenerate 3D tissue using cells as building blocks (cell LEGO). The ssDNA-PEG-lipids spontaneously anchor to the lipid bilayer of the cell membrane. The ssDNA which is presented on the cell surface can be used as an adhesive to immobilize cells on various surfaces. Various patterns can be drawn on glass plates using cells along the patterned aaDNA. Solutions of ssDNA-SHs were printed by an inkjet printer onto a glass plate covered with a gold thin layer. ssDNA-SHs were immobilized onto the surface. Cells with ssDNA'-PEG-lipid, in which ssDNA' was complementary to the ssDNA sequence of the ssDNA-SHs on the surface, were applied to the surface to induce cell attachment through the ssDNA-ssDNA' hybridization.
{"title":"Cell LEGO","authors":"Hiroo Iwata","doi":"10.1109/omn.2013.6659066","DOIUrl":"https://doi.org/10.1109/omn.2013.6659066","url":null,"abstract":"New methodology is required to set appropriate cells at right position to prepare 3 dimensional tissue in regenerative medicine. We have been synthesized single-stranded DNA-conjugated poly(ethylene) glycol-phospholipid (ssDNA-PEG-lipid), which is the amphiphilic conjugate of PEG-lipid and single-stranded DNA and examined as a cell adhesive. New methodology using ssDNA-PEG-lipid as a cell adhesive will be presented. It enables to display cells in certain area on a glass plate and to regenerate 3D tissue using cells as building blocks (cell LEGO). The ssDNA-PEG-lipids spontaneously anchor to the lipid bilayer of the cell membrane. The ssDNA which is presented on the cell surface can be used as an adhesive to immobilize cells on various surfaces. Various patterns can be drawn on glass plates using cells along the patterned aaDNA. Solutions of ssDNA-SHs were printed by an inkjet printer onto a glass plate covered with a gold thin layer. ssDNA-SHs were immobilized onto the surface. Cells with ssDNA'-PEG-lipid, in which ssDNA' was complementary to the ssDNA sequence of the ssDNA-SHs on the surface, were applied to the surface to induce cell attachment through the ssDNA-ssDNA' hybridization.","PeriodicalId":6334,"journal":{"name":"2013 International Conference on Optical MEMS and Nanophotonics (OMN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85041947","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 : 2013-08-01DOI: 10.1109/OMN.2013.6659105
V. Aksyuk, J. Zou, Yuxiang Liu, H. Miao, M. Davanco, K. Srinivasan
By integrating microdisk optical cavities with MEMS and NEMS, we achieve on-chip interferometric motion sensing with better than 1 fm/Hz½ precision and 1 GHz bandwidth. These transducers are less than 20 um in size, stable, self-aligned and fiber connectorized. Silicon-on-insulator (SOI) fabrication, operation at standard telecom wavelengths and design separating optical and mechanical parts enable a variety of applications. We read out picogram-scale nanomechanical probes for high speed atomic force microscopy (AFM). We also demonstrate 1000x suppression of random thermal motion of an electrostatically actuated MEMS transducer, using feedback to optimize for high bandwidth mechanical force sensing.
{"title":"MEMS and NEMS with integrated cavity optomechanical readout","authors":"V. Aksyuk, J. Zou, Yuxiang Liu, H. Miao, M. Davanco, K. Srinivasan","doi":"10.1109/OMN.2013.6659105","DOIUrl":"https://doi.org/10.1109/OMN.2013.6659105","url":null,"abstract":"By integrating microdisk optical cavities with MEMS and NEMS, we achieve on-chip interferometric motion sensing with better than 1 fm/Hz½ precision and 1 GHz bandwidth. These transducers are less than 20 um in size, stable, self-aligned and fiber connectorized. Silicon-on-insulator (SOI) fabrication, operation at standard telecom wavelengths and design separating optical and mechanical parts enable a variety of applications. We read out picogram-scale nanomechanical probes for high speed atomic force microscopy (AFM). We also demonstrate 1000x suppression of random thermal motion of an electrostatically actuated MEMS transducer, using feedback to optimize for high bandwidth mechanical force sensing.","PeriodicalId":6334,"journal":{"name":"2013 International Conference on Optical MEMS and Nanophotonics (OMN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90392741","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}
T. Sandner, T. Grasshoff, M. Schwarzenberg, H. Schenk
This paper presents a gimbaled MEMS scanning mirror especially developed for adaptive raster scanning in a novel 3D-ToF laser camera. Substantial quasi-static deflections of ±10° are provided by vertical comb drives in vertical direction in contrast to resonant horizontal scanning of the 2.6×3.6mm elliptical mirror at 1600Hz and 80° FOV. To guarantee the full reception aperture of effective 5mm a synchronized driven array - consisting of five hybrid assembled MEMS devices with integrated position feedback - is used by the 3D camera enabling a distance measuring rate of 1MVoxel/s and an uncertainty of ToF distance measurement of 5mm at 7.5m.
{"title":"Quasi-static microscanner with linearized scanning for an adaptive 3D-laser camera","authors":"T. Sandner, T. Grasshoff, M. Schwarzenberg, H. Schenk","doi":"10.1117/12.2064898","DOIUrl":"https://doi.org/10.1117/12.2064898","url":null,"abstract":"This paper presents a gimbaled MEMS scanning mirror especially developed for adaptive raster scanning in a novel 3D-ToF laser camera. Substantial quasi-static deflections of ±10° are provided by vertical comb drives in vertical direction in contrast to resonant horizontal scanning of the 2.6×3.6mm elliptical mirror at 1600Hz and 80° FOV. To guarantee the full reception aperture of effective 5mm a synchronized driven array - consisting of five hybrid assembled MEMS devices with integrated position feedback - is used by the 3D camera enabling a distance measuring rate of 1MVoxel/s and an uncertainty of ToF distance measurement of 5mm at 7.5m.","PeriodicalId":6334,"journal":{"name":"2013 International Conference on Optical MEMS and Nanophotonics (OMN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88489708","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 : 2013-08-01DOI: 10.1109/OMN.2013.6659075
H. Iimura, D. Deng, S. Kumagai, Y. Ohishi, M. Sasaki
The micro-channel device for passing the supercontinuum light across the liquid channel is developed. For the accurate alignment of the optical fibers, the bias spring with the reversely tapered profile is newly introduced realizing the high transmission ratio. Infra-red absorption spectrum is measured for obtaining the molecular information. When the water is introduced in the liquid channel, the characteristic absorption peak is clearly confirmed.
{"title":"Micro-channel device for spectrum measurement using optical fiber aligned with bias spring with reversely tapered profile","authors":"H. Iimura, D. Deng, S. Kumagai, Y. Ohishi, M. Sasaki","doi":"10.1109/OMN.2013.6659075","DOIUrl":"https://doi.org/10.1109/OMN.2013.6659075","url":null,"abstract":"The micro-channel device for passing the supercontinuum light across the liquid channel is developed. For the accurate alignment of the optical fibers, the bias spring with the reversely tapered profile is newly introduced realizing the high transmission ratio. Infra-red absorption spectrum is measured for obtaining the molecular information. When the water is introduced in the liquid channel, the characteristic absorption peak is clearly confirmed.","PeriodicalId":6334,"journal":{"name":"2013 International Conference on Optical MEMS and Nanophotonics (OMN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78261730","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 : 2013-08-01DOI: 10.1109/OMN.2013.6659093
Tian-ling Zhang, Bo Li, C. Ho, Chengkuo Lee
This paper demonstrated the design and fabrication of Ring-assisted Mach-Zehnder interferometer (RA-MZI) based optical sensor. The measurement result shows a free spectrum range (FSR) of 5 nm and a highest Q-factor of 2000. Finite difference time domain (FDTD) simulation result shows a sensitivity of 137.5 nm/RIU for sensing ambient refractive index (RI) change.
{"title":"High sensitive silicon optical index sensor based on Ring-assisted Mach-Zehnder interferometer","authors":"Tian-ling Zhang, Bo Li, C. Ho, Chengkuo Lee","doi":"10.1109/OMN.2013.6659093","DOIUrl":"https://doi.org/10.1109/OMN.2013.6659093","url":null,"abstract":"This paper demonstrated the design and fabrication of Ring-assisted Mach-Zehnder interferometer (RA-MZI) based optical sensor. The measurement result shows a free spectrum range (FSR) of 5 nm and a highest Q-factor of 2000. Finite difference time domain (FDTD) simulation result shows a sensitivity of 137.5 nm/RIU for sensing ambient refractive index (RI) change.","PeriodicalId":6334,"journal":{"name":"2013 International Conference on Optical MEMS and Nanophotonics (OMN)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75660277","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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