Relevant bibliographies by topics / -BBO crystal

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic '-BBO crystal'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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Journal articles on the topic "-BBO crystal"

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Li, Zhihua, Ran Zhang, Yaohuan Wu, Bo Tang, and Guochun Zhang. "Controlled growth of large β-BaB2O4crystals based on theoretical guidelines." Journal of Applied Crystallography 48, no. 6 (October 13, 2015): 1665–71. http://dx.doi.org/10.1107/s1600576715016040.

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The diagram of phase equilibria in the BaB2O4–NaF system has been used to deduce the relationship between the cooling speed (ΔT), the pulling speed (v), the crystal radius (Rs), the slope of liquidus (m), the solution component (x) and the total quantity of melt, namely ΔT= 0.00159Rs2vmx2/G. The theoretical curves of the crystal thickness dependence on cooling rate and pulling rate have also been drawn. Under the guidance of the deduced formulas, the controlled growth of β-BaB2O4(BBO) crystals to a desired size has been achieved. A typical as-grown BBO crystal with dimensions of Ø76 × 33 mm (525.25 g) has been grown successfully by using the high-temperature top-seeded solution growth method. The measured optical homogeneity indicates that the as-grown BBO crystal has high optical quality (Δn≃ 6.9 × 10−6). The experimental curves of the crystal thicknessversusthe cooling rate and pulling rate were in line with the theoretical curves. The phenomenon of diameter shrinkage in the crystal growth has also been explained according to theory and practice. The theoretical derivation and experimental results provide the rationale for further growth of large BBO crystals with high optical quality.
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Wan, Songming, Xia Zhang, Sijie Zhao, Qingli Zhang, Jinglin You, Hui Chen, Guochun Zhang, and Shaotang Yin. "Growth units and growth habit of α-BaB2O4crystal." Journal of Applied Crystallography 40, no. 4 (July 13, 2007): 725–29. http://dx.doi.org/10.1107/s0021889807024995.

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The structure of the melt near a crystal–melt interface is a fundamental problem in the dynamics of crystal growth. In this work, high-temperature Raman spectroscopy was applied to investigatein situthe structure of the melt near the α-BaB2O4(α-BBO) crystal–melt interface. A structured melt was found in this region: (B3O6)3−groups form near the interface and vanish towards the bulk melt. The crystal growth habit was then explained by the periodic bond chain (PBC) theory. At the α-BBO crystal–melt interface, the growth units, namely the (B3O6)3−anion groups and Ba2+cations, stack mainly along four types of PBCs. These four PBCs constitute three potential F faces: {10\bar{1} 2}, {01\bar{1} 4} and {10\bar{1} 10}. The predicted results are in good agreement with the observed growth habit of α-BBO crystal.
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Wu, Shaofan, Guofu Wang, Jianling Xie, Xiquan Wu, Yangfen Zhang, and Xiang Lin. "Growth of large birefringent α-BBO crystal." Journal of Crystal Growth 245, no. 1-2 (November 2002): 84–86. http://dx.doi.org/10.1016/s0022-0248(02)01693-7.

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Cheng, Zhaonian, Yu Lei, and Dingyuan Tang. "Molecular dynamics study of BBO crystal growth melts." Journal of Crystal Growth 183, no. 1-2 (January 1998): 227–39. http://dx.doi.org/10.1016/s0022-0248(97)00381-3.

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Fang, Zhi, Lijuan Liu, Xiaoyang Wang, and Chuangtian Chen. "Thermo-physical properties of a new UV nonlinear optical crystal: NaSr3Be3B3O9F4." Journal of Applied Crystallography 51, no. 2 (February 21, 2018): 357–60. http://dx.doi.org/10.1107/s1600576718001218.

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NaSr3Be3B3O9F4(NSBBF) as a new UV nonlinear optical crystal has aroused great interest in recent years. This study investigates the thermo-physical properties of NSBBF, including thermal expansion, thermal diffusivity, thermal conductivity and specific heat, which are important parameters for applications. The specific heat of NSBBF is comparable to that of CsLiB6O10(CLBO) and larger than that of β-BaB2O4(β-BBO), indicating that NSBBF has a very high laser damage threshold. The thermal expansion coefficients of NSBBF are determined as αa= 1.05 × 10−5 K−1and αc= 1.34 × 10−5 K−1, exhibiting much smaller anisotropy than those of CLBO and β-BBO. The thermal diffusivity and conductivity of NSBBF are also obtained in the temperature region from 323 to 573 K, showing comparable anisotropies to β-BBO. All these results show that NSBBF is suitable for high-power UV laser generation.
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Pan, Shoukui, and Qingxi Chen. "The separation of β-BBO phase in α-BBO crystal by the irradiation of femtosecond laser." Journal of Alloys and Compounds 456, no. 1-2 (May 2008): L1—L2. http://dx.doi.org/10.1016/j.jallcom.2007.02.085.

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Wen, Liu, and Gao Minrong. "Inclusion observation and AEM study of new type nonlinear optical crystal β-BaB2O4." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (August 1990): 610–11. http://dx.doi.org/10.1017/s0424820100176186.

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It is well known that β-BBO is a new type nonlinear optical crystal discovered in our institute and now β-BBO is widely used in the fields of laser and nonlinear optics.However,there are still some inclusions in β-BBO crystal grown by flux method.Using AEM technique,we have studied the shape,composition and structure of inclusions which is very helpful to the explanation of the formation of inclusions.Under optical microscope,the inclusions appear to be irregular in shape and there are some micro-cracks extending to the substrate in the boundary of large inclusions.Under scanning electron microscope,they are spongy and consist of many irregular grains surrounded by voids(Fig.1).The backscattered electron image indicates that the distribution of barium in the inclusion is inhomogeneous(Fig.2).By using electron probe micro-analysis,we studied the impurities and their distribution in the inclusions and discovered that Na element is gathered in inclusions while Ba element is much less in inclusions than in substrate(Fig.3).The distribution of Na and Ba is also inhomogeneous in inclusions.
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KOUTA, Hikaru, and Yasuhiko KUWANO. "Light Scattering in a Wavelength Conversion BBO Single Crystal." Review of Laser Engineering 26, no. 3 (1998): 261–64. http://dx.doi.org/10.2184/lsj.26.261.

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Wang Yanling, 王燕玲, 李贤 Li Xian, 周绪桂 Zhou Xugui, 吴洪 Wu Hong, 徐世祥 Xu Shixiang, and 丁良恩 Ding Liangen. "Experimental Research of Cascading Nonlinear Effect in BBO Crystal." Acta Optica Sinica 28, no. 9 (2008): 1761–66. http://dx.doi.org/10.3788/aos20082809.1761.

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Yu, Pingsheng, Liangbi Su, Feng Wu, and Jun Xu. "The spectroscopic properties of Yb3+ doped α-BBO crystal." Optics Communications 285, no. 10-11 (May 2012): 2665–67. http://dx.doi.org/10.1016/j.optcom.2012.02.027.

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Dissertations / Theses on the topic "-BBO crystal"

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Weiss, Jiří. "Diagnostika impulzů Ti:Sa laseru pro generaci plazmatu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231778.

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This diploma thesis is focused on investigation of temporal characteristics of laser pulses generated by oscillator with Ti:Sapphire active laser medium. In terms of properties of laserinduced plasmas the beam quality is crucial, in particular laser pulse contrast ratio. A new prototype of third order autocorrelator was designed. Pulse contrast ratio measurement is based on sum frequency generation between pulse of fundamental wavelength and its frequency doubled replica. Dynamic range of presented autocorrelator is estimated to be up to 8×10^12 which is more than currently available commercial devices can offer.
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Carvalho, Jesiel Freitas. "Crescimento e caracterização de monocristais fotorreativos: BSO e BTO." Universidade de São Paulo, 1994. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-14012009-093345/.

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Neste trabalho crescemos monocristais de Bi12SiO20 (BSO) e de Bi12TiO20 (BTO). Os cristais de BSO foram crescidos pela técnica de Czochralski a partir da fase líquida com composição molar 6Bi2O3:1SiO2. Os melhores resultados foram obtidos para taxas de puxamento entre 1 e 2,5mm/h, a velocidade de rotação foi mantida constante em 20rpm. Os cristais de BTO foram crescidos pelo método top-seeded solution Growth (TSSG) a partir da composição molar 10Bi2O3:1SiO2, com taxas de puxamento menores que 0,3mm/h e velocidade de rotação entre 16 e 30 rpm. A qualidade dos cristais foi avaliada utilizando microscopia óptica e eletrônica, corrosão seletiva e raios-x. Por microscopia óptica identificamos os defeitos macroscópicos e discutimos sua natureza e possíveis causas. Utilizando a técnica de ataque químico seletivo, analisamos a morfologia das figuras de ataque e estimamos a densidade de deslocações. Visando identificar defeitos de estequiometria, fizemos medidas de composição por microanálise eletrônica. Para a caracterização cristalográfica, calculamos o parâmetro de rede por difração de raios-x usando o método do pó e confirmamos a estrutura cristalográfica através do método de Rietveld. E, ainda, medimos a atividade óptica que é uma constante característica dos cristais.
In this work we grew Bi12SiO20 (BSO) and Bi12TiO20 single crystals. The BSO crystals have been grown from the melt composition of 6Bi2O3:1SiO2 by the Czochralski method. The best results were obtained at pulling rates from 1 to 2.5m/h, the rotation rate of 20rpm was constant. The BTO crystals have been grown by the top-seeded solution growth technique from a 10Bi2O3:1SiO2 solution with pulling rates less than 0.3mm/h and rotation rates from 16 to 30rpm. The crystal quality was examined by optical and scanning electron microscopy, selective etching, and x-ray diffraction. We identified the macroscopic defects by optical microscopy and discussed their nature and probable origin. Using selective etching, we analyzed the etching pits morphology and evaluated the dislocation density. To identify stoichiometric defects, composition measurements by electron probe microanalysis were made. To obtain crystallographic characterization, we calculated the cell parameter by powder method x-ray diffraction and used the Rietveld method to verify the crystallographic structure. And, also, we measured the optical activity, a constant of the crystals.
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Boussert, Bertrand. "Optical switching induced by a BGO crystal." Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/14989.

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McMaster, Michael S. "Optoelectronic Applications For Bio-Based Materials." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case155257775382127.

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Quan, Qimin. "Photonic Crystal Nanobeam Cavities for Biomedical Sensing." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10421.

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Manipulation of light at the nanoscale has the promise to enable numerous technological advances in biomedical sensing, optical communications, nano-mechanics and quantum optics. As photons have vanishingly small interaction cross sections, their interactions have to be mitigated by matters (i.e. quantum emitters, molecules, electrons etc.). Waveguides and cavities are the fundamental building blocks of the optical circuits, which control or confine light to specific matters of interest. The first half of the thesis (Chapters 2 & 3) focuses on how to design various photonic nanostructures to manipulate light on nano- to micro- scale, especially to modify the light-matter interaction properties. Chapter 2 discusses how nano-slot waveguides and photonic crystal nanobeam waveguides are able to modify the emission of quantum emitters, in a different way that normal ridge waveguides are not able to. Chapter 3 focuses on a more complicated and powerful structure: the photonic crystal nanobeam cavity. The design, fabrication and characterization of the photonic crystal nanobeam cavities are described and demonstrated in detail, which lays out the foundation of the biomedical sensing applications in the second half of the thesis. The second half of the thesis (Chapters 4 & 5) focuses on the application of photonic crystal nanobeam cavities in the label-free sensing of biomedical substances. Chapter 4 demonstrates detection of solutions with different refractive index (aceton, methanol, IPA etc.), glucose concentration, single polystyrene nanoparticles and single streptavidin bio-molecules. Chapter 4 proposes a novel nonlinear optical method to further enhance the sensitivity. Chapter 4 also demonstrates high quality nanobeam cavities fabricated in polymers, that open up a new route to decrease the cost, as well as to achieve novel applications with functional polymers. The broader impact of this technology lies in its potential of commercialization of a new generation of biosensors with high sensitivity and high integration. Chapter 5 discusses progresses towards instrumentation of the nanobeam cavity sensing technology for research & development apparatus, as well as point-of-care diagnostic tools.
Engineering and Applied Sciences
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Lethbridge, Alfred John. "Bio-inspired optical systems." Thesis, University of Exeter, 2013. http://hdl.handle.net/10871/14727.

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This thesis presents an investigation into some of the structural colours that are produced in nature. There are many animals and plants that produce structural colour, with a particularly high structural colour diversity in insects. Of the species that exhibit structural colours, three species are the subjects for investigation of this thesis. Those comprise a group of beetles from South-East Asia, Torynorrhina flammea, a buttery, Parides sesostris and a fruit, Margaritaria nobilis, both from South American rainforests. The structures that produce the vivid colours of these species were analysed using electron microscopy. This information aided the design and creation of three inorganic, synthetic replicas of the natural structures. The fruit of Margaritaria nobilis was structurally analysed, yielding the discovery of a novel multilayer fibre. These fibres were cylindrical in design and were found to be layered together producing the epidermis of the fruit. The multilayer structure produced a vivid blue colour appearance, which is believed to offer a selective advantage because the colour deceives birds into thinking that the fruit contains nutritious flesh. This selective advantage earns M. nobilis the label of mimetic fruit. The structure found within the M. nobilis fruit epidermis inspired the synthesis of a structure which comprises single cylindrical multilayer fibres. The synthetic fibres were manufactured from elastic materials which allow the structure to be deformed under strain and, therefore, a change in colour can be observed. As the structure was stretched, this made the layers get thinner and, therefore, the colour of the fibre blue-shifted. The fibre was able to be stretched to over twice its original length which yields a shift in peak reflected wavelength of over 200 nm. Four beetles from the Torynorrhina flammea species were investigated with the aim of replicating the nanostructures responsible for their colour appearance. The initial interest in the beetles came from their strikingly vivid colour appearances. The structure responsible for the vivid colours in all four of the subspecies is a multilayer with high structural order and over 100 laminae. Both of these attributes contribute to the saturation of the colours exhibited. The multilayer was found to be intersected by an array of rods, the long axis of which is orthogonal to the surface. The rods are believed to be the cause of an interesting diffraction phenomenon exhibited by the beetles. Using imaging scatterometry, the structure was found to diffract the colour produced by the multilayers into an annulus around a specularly reflected white spot. This inspired the synthesis of a multilayer permeated with an array of holes with the aim of replicating a system that could reproduce the annular pattern of colour reflection. The initial synthesised system comprised a quarter-wave stack with a perfectly ordered hexagonal array of holes permeating the surface orthogonally. The sample displayed the scattering characteristics of a hexagonal array, and the reflection spectra of the multilayer stack. When disordered hexagonal arrays were milled into the structure with a focussed ion beam, the scattering pattern started to show more of the green colour from the multilayer and less of the ordered scattering pattern. The highly disordered, synthesised structure displayed no hexagonal scattering pattern, but instead it showed a highly scattered bluish-green colouration. One sample was created by directly mapping out the array of holes using an image of the original array from one of the beetle samples. This sample was expected the same annular diffraction pattern as the beetles, however, the sample instead exhibited the same scattering pattern as the highly disordered array. Some structurally coloured systems in nature have more than one light scattering structure, all of which contribute to the overall colour of the system. For complicated systems such as this, it is necessary to devise a technique to characterise the individual scattering structures separately. One such species that displays a complex, multicomponent system is Parides sesostris. The male of the species displays bright green patches on the dorsal side of the forewings which are made up of thousands of green wing scales. These green scales contain a 3D gyroid poly-crystal at centre with a membrane layer surrounding the underside of each scale and a scattering structure on top. Using focussed ion beam milling techniques allowed the individual characterisation of each of these structures. The gyroid poly-crystal was found to reflect not green but blue wavelengths. This led to the discovery by another group [1] that the scales contain at least one type of fluorophore. The removal of the membrane structure and some of the gyroid poly-crystal from the base of the scale resulted in the change of the overall scale structure from green to cyan. This suggests that the membrane maybe a significant source of fluorescence. Computational modelling, without fluorescence, suggests that the addition of the membrane layer to the gyroid does not shift the band-gap wavelengths; however, the overall reflection intensity does increase. The scattering structure on the top side of each scale is comprised a bi-grating which sits on top of the 3D gyroid structure. The long periodicity of the bi-grating protrudes above the surface, resulting in the very top layer of the scale to be a mono-grating. This whole structure decreases the angular-dependence of the colour by efficiently scattering the incident light into the gyroid and also scattering the reflected light from the gyroid, resulting in a double-scattering. FIB-milling was used to isolate the scattering part of the structure. Analysis of this component of the structure revealed that it was not a source of the green colour itself; however, it did show the characteristic scattering pattern of a mono-grating. The small periodicity of the bi-grating did not produce a scattering pattern since the periodicity is too small to produce optical diffraction at normal incidence. To characterise the effect of the fluorophores, the whole scale structure was photo-bleached using ultra-violet radiation for two months with the aim of destroying the fluorophores contained within the structure. The expected result occurred which was the blue-shifting of the peak reflected wavelengths. However, it could not be confirmed whether or not the photo-bleaching reduced the physical size of the light scattering structures which would, in theory, result in a blue-shift of the peak reflected wavelengths. The male P. sesostris green wing scales were also the subject for investigation for trying to make inorganic replicas of the gyroid-polycrystal. A surface sol-gel coating process was utilised to coat the green wing scales with titania. This coating process was performed using a few different methods. Half of the samples were coated with TiO2 and the other half with tin-doped TiO2. Half of each of these samples had their surfaces dendritically amplified before the coating processes and the other half were left untreated. The samples were coated with 25 surface sol-gel (SSG) cycles of each treatment at a time. After each 25 cycle treatment the samples were optically characterised. The total number of cycles applied to the samples at the end was 150. The addition of layers of titania resulted in a general red-shift that was higher for the tin-doped titania samples than for the titania samples. Another general trend found was that the samples that had their surfaces dendritically amplified, produced a lower red-shift in peak wavelength. This was contrary to the hypothesis that the amplification process was supposed to aid the SSG coating process and, therefore, increases the red-shift in peak wavelength.
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Duan, Zhouyang. "Water vapour permeability of bio-based polymers." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13609.

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This project investigates the moisture barrier properties of bio-based polymers and ways of improving them. The first section addresses the effect of crystallinity on the water permeability of poly(lactic acid) (PLA). The second section investigates PLA/talc composites and PLA/ montmorillonite nanocomposites. The third section is focused on a new polymer, polybutylene succinate (PBS), and its nanocomposites with montmorillonite. In the first section, the water vapour transmission rates (WVTR) through samples of polylactic acid of different crystallinities have been measured. Three different grades of commercial PLA were used with different ratios of L-lactide and D-lactide to give a range of crystallinities from 0 to 50%. Sheets of PLA were prepared by melt compounding followed by compression moulding and annealing at different temperatures and for different times to give the range of crystallinities required. Crystallinity was measured by differential scanning calorimetry (DSC) and the morphology of the samples was observed under crossed polars in a transmitted light microscope. Water vapour transmission rates through the films were measured at 38°C and at a relative humidity of 90%. It was found that the measured values of WVTR decreased linearly with increasing crystallinity of the PLA from 0 to 50%. The results are discussed in terms of the effect of crystallinity on solubility and shown to fit the tortuous path model. The model was also successfully used to explain published data on water permeability of polyethylene terephthalate. In the second section, a series of PLA/talc composites and PLA/ montmorillonite nanocomposites were prepared by melt compounding followed by compression moulding. The morphologies of the composites were investigated using transmission electron microscopy (TEM) and wide-angle X-ray diffraction (WAXD) and it was found that the fillers were well dispersed in the polymer matrix. The average aspect ratio of the compounded talc was found to be 8, and that of the nanoclay was found to be 50. Water vapour transmission rates (WVTR) through the films were measured at 38°C and at a relative humidity of 90%. It was found that the measured values of WVTR decreased with increasing filler content and the results gave good agreement with predictions from the Nielsen tortuous path model. In the third section, PBS/ montmorillonite nanocomposites were prepared by melt compounding followed by compression moulding. The melting and crystallisation behaviour of the pure PBS samples were investigated using differential scanning calorimetry (DSC) and cross polarised optical microscopy. A slight decrease of the degree of crystallinity was found in PBS containing 5% nanoclay. The morphology of the composites was investigated using transmission electron microscopy (TEM) and wide-angle X-ray diffraction (WAXD) and it was confirmed that that composite structures were intercalated. Water vapour transmission rates (WVTR) through the PBS sheets were measured using a MOCON Permatran-W®398. The measured values of WVTR decreased with increasing nanoclay content. However, the experimental values were all higher than the values predicted by the Nielsen tortuosity model. This result shows that in the case of PBS, which is a highly crystalline polymer, the nanoclay is not as well dispersed and is not as effective in reducing water vapour permeability as in the case of PLA.
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Borta, Petru. "Cristaux photoniques en diamant pour la réalisation de bio-capteurs innovants." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS006/document.

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Au cours des dernières années, la recherche dans le domaine des bio-capteurs optiques sans marquage a connu une croissance rapide du fait de la nécessité de développer des méthodes toujours plus performantes pour la détection et la mesure de faibles concentrations de molécules spécifiques dans divers domaines. Parmi les différentes méthodes optiques existantes, les cristaux photoniques (CP) offrent une alternative prometteuse du fait de leur sensibilité. D’autre part, le diamant, utilisé comme matériau pour la réalisation de ces dispositifs offre de bonnes propriétés optiques et la possibilité de réaliser une fonctionnalisation de surface efficace facilement. Dans ce contexte, cette thèse propose un nouveau design de bio-capteur optique à cristaux photonique bi-dimensionnel en diamant, fonctionnant à des longueurs d'onde proche de 800 nm.Une géométrie originale de trous d'air circulaires organisés selon une maille carrée a été choisie pour maximiser la sensibilité du bio-capteur à des changements d'indice de réfraction en leur surface. Il a été démontré analytiquement que les modes à faible vitesse de groupe avaient une plus grande sensibilité à ces changements. Des méthodes numériques ont permis de préciser les paramètres géométriques optimaux du CP. Le design proposé est basé sur la mesure de décalage angulaire dans le spectre en réflexion d'un mode lent résonant du CP quand celui-ci est éclairé par une lumière monochromatique.Des films de diamant polycristallin de quelques centaines de nanomètres à quelques micromètres d’épaisseur ont été déposés sur différents substrats. L’ensemble des procédés technologiques nécessaires à la réalisation des CP et spécifiques aux films de diamant polycristallin ont été développés ou optimisés, comme, entre autre, un procédé de lissage obtenu par gravure plasma, un procédé de transfert de films de diamant sur un autre substrat par collage, un procédé d’amincissement des films de diamant et la fabrication des CP par lithographie électronique et gravure plasma.Les échantillons réalisés dans la salle blanche du C2N ont été mesurés optiquement et les hypothèses théoriques concernant les performances du capteur ont étés validées. Un mode avec une vitesse de groupe c/100 à une longueur d'onde de 800 nm a été mesuré et la sensibilité correspondant a cette structure a été estimée à 500 degrés par unité d'indice de réfraction (°/RIU), une valeur supérieure d’un ordre de grandeur à celles rencontrées couramment dans les capteurs à CP bidimensionnels. Ces résultats représentent un premier pas vers un biocapteur hautement sensible, comprenant une fonctionnalisation de surface du diamant pour une reconnaissance de cible spécifique
Over the last years, the research on the label-free biosensor topic has experienced a very rapid growth because of the need to develop high-performing methods to detect and measure low concentrations of specific molecules in various fields. Among all the methods proposed, photonic crystals (PhC) structures offers a good alternative due to their sensitivity. Moreover, the use of diamond as material make the proposed device more attractive due to its optical properties, high chemical stability and efficiency of surface functionalization. In this context, this PhD thesis propose a new design of optical bio-sensor based on diamond two-dimensional photonic crystals, working at the wavelength near 800 nm.An original geometry of circular air holes arranged in squared lattice was chosen in order to maximize the sensitivity of such photonic structures to refractive index changes on their surface. It was analytically proven that modes with low group velocity are more sensitive to these variations. Numerical methods gave the necessary information to determine the optimal geometrical parameters of the PhC. The proposed design is based on measuring the shift of the angular reflectivity of a low group velocity guided mode resonance (GMR) PhC when probed with a single frequency light.Polycrystalline diamond films were grown on two different substrates, with thicknesses ranging from a few hundreds of nanometers to several micrometers. The technological processes required for the realization of PhC on polycrustalline diamond were developed or optimized, such as surface planarization by inductively coupled plasma (ICP) dry etching, diamond film transfer onto new substrate by wafer bonding process, diamond films thinning and surface patterning with PhC using Electronic Beam Lithography (EBL) and ICP methods.The samples realized in clean-room facilities were optically measured and the theoretical assumptions were validated. A GMR with a c/100 group velocity at a wavelength of 800 nm was measured and its sensitivity is estimated to be in the order of 500 degrees/ refractive index unit (°/RIU), a value that is one order of magnitude higher than the typical values encountered for sensors based on 2D PhC. These results represents a first step towards a highly sensitive bio-sensor, including a diamond surface functionalization for specific target recognition
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Donato, Silvia Tavares. "ComparaÃÃo de mÃtodos convencionais e semi-automatizados para identificaÃÃo de Enterococcus spp.frente à biologia molecular em identificaÃÃes discrepantes." Universidade Federal do CearÃ, 2007. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=1483.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico
Os Enterococcus sÃo cocos Gram-positivos catalase-negativos, habitantes do trato gastrintestinal e geniturinÃrio. SÃo identificados por meios manuais baseados no clÃssico de Facklam, por sistemas semi-automatizados, automatizados e por Biologia Molecular. Em vista da diversidade de mÃtodos de identificaÃÃo e com o intuito de se verificar a concordÃncia entre alguns mÃtodos, foi realizada identificaÃÃo de 62 cepas bacterianas, advindas da coleÃÃo do Centro Especializado em Micologia MÃdica (CEMM) da Universidade Federal do CearÃ, Brasil, presumidamente identificadas como Enterococcus sp. e Enterococcus faecalis pelo esquema de Facklam. Este estudo iniciou-se com a identificaÃÃo por trÃs mÃtodos manuais: esquema de facklam e dois modificados deste - Modificado 1 e Modificado 2 - e semi-automatizado â API 20 Strep. Para a definiÃÃo de resultados discordantes, recorreu-se ao semi-automatizado â BBL â e à Biologia Molecular â PCR. O esquema de Facklam identificou 16% (10) como cepas do gÃnero Enterococcus sp. e 84% (52) como E. faecalis. O esquema Modificado 1 apresentou a seguinte identificaÃÃo: 82,2% (51) E. faecalis, 9,7% (6) E. mundtii, e 8,1% (5) E. gallinarum. O Modificado 2 identificou 98,4% (61) E. faecalis e 1,6% (1) E. gallinarum. O API 20 Strep identificou 51,6% (32) E. faecalis, 19,4% (12) A viridans, 13,0% (8) E. avium, 4,8% (3) S. agalactiae, 3,2% (2) E. faecium, 1,6% (1) S. acidominimus, 1,6% (1) Leuconoctocc sp., 1,6% (1) S. uberis, 1,6% (1) A. adiacens e 1,6% (1) InaceitÃvel. Foram selecionadas 10 amostras (cepas nÂs 05, 13, 15, 20, 27, 31, 32, 33, 50 e 60), que apresentaram resultados discordantes entre os sistemas Modificado 1, Modificado 2 e API 20 Strep para serem identificadas pelo BBL Crystal e por PCR. O BBL identificou 6 amostras como E. faecium, inclusive a cepa-controle E. faecalis ATCC 29212 e nÃo identificou 4 amostras. Na PCR, uma amostra nÃo amplificou e 9 foram identificadas como Streptococcus spp.. Uma amostra apresentou-se positiva para o gÃnero Enterococcus, mas nÃo para a espÃcie E. faecalis e 1 (uma) amplificou para a espÃcie S. agalactiae. Nenhuma das amostras se apresentou positiva para a espÃcie E. gallinarum. A amostra-controle â E. faecalis ATCC 29212 - foi amplificada corretamente. Com a anÃlise dos resultados, verificou-se que houve concordÃncia de identificaÃÃo das 62 cepas em 84% das amostras entre os sistemas manuais (Facklam, Modificado 1 e Modificado 2) e em 52% das amostras entre os sistemas manuais e semi-automatizado (API 20 Strep). Nas 10 amostras com resultados discrepantes, nÃo houve concordÃncia de identificaÃÃo entre os sistemas manuais, API 20 Strep e o BBL. A PCR concordou com os sistemas manuais e o BBL e foi discordante do API 20 Strep, em gÃnero, em 01 amostra. Correlacionando a PCR com o API 20 Strep, houve concordÃncia, em gÃnero, em 01 amostra e foi discordante dos demais sistemas. Para aumentar a sensibilidade de identificaÃÃo de Enterococcus spp. devem ser utilizados pelo menos dois mÃtodos com testes fenotÃpicos. Amostras com identificaÃÃes discordantes devem ser reidentificadas por PCR
The Enterococcus are Gram-positive cocci catalase negative - which inhabit the gastrointestinal, and genitourinary tract. They are identified manually and the procedure is based on the classic of Facklam, by semi-authomatized and automatized systems as well as by Molecular Biology. Due to the diversity of identification methods and aiming to verify the concordance among some methods, it was accomplished the identification of 62 bacteria strains proceeding from the collection of the Centro Especializado em Micologia MÃdica (CEMM) of the Federal University of CearÃ, in Brazil. They were presumably identified as Enterococcus sp. e Enterococcus faecalis by the Facklam scheme. This study was begun with the identification for two manual methods, modified from the Facklam scheme â Modified 1 and Modified 2- and semi-automatized â API 20 Strep. For the inconsistent results definition we used the semi-automatized â BBL and the Molecular Biology- PRC. The Franklin scheme identified 16% (10) as strains of the genre Enterococcus sp. and 52% (84) as E. faecalis. The Modified Scheme 1 presented the following identification: 82, 2% (51) E. faecalis, 9, 7% (6) E. mundtii and 8, 1% (5) E. gallinarum. The Modified 2 identified 98, 4% (61) E. faecalis and 1, 6% (1) E. gallinarum. The API 20 Strep identified 51,6% (32) E. faecalis, 19,4% (12) A viridans, 13,0% (8) E. avium, 4,8% (3) S. agalactiae, 3,2% (2) E. faecium, 1,6% (1) S. acidominimus, 1,6% (1) Leuconoctocc sp., 1,6% (1) S. uberis, 1,6% (1) A. adiacens and1,6% (1) unacceptable. It was made the selection of 10 sample (strains), among them, the ones numbered (05, 13, 15, 20, 27, 31, 32, 33, 50 and 60), which presented discordant results among the systems Modified 1, Modified 2 and API 20 Strep to be identified by BBL Crystal and by PCR. The BBL identified 6 samples as E. faecium, including the control- strain E. faecalis ATCC 29212 and did not identify 4 samples. In the PCR, one sample did not amplify and 9 were identified as Streptococcus spp. One sample was identified as positive for the genre Enterococcus, but it did not for the species E. faecalis and 1 (one) was amplified for the species S. agalactiae. None of the samples presented were positive for the species E. gallinarum. The control-sample â E. faecalis ATCC 29212 â was correctly amplified. With the analysis of the results, it was noticed that there was identification concordance of the 62 strains in 84% of the samples among the manual systems (Facklam, Modified 1 and Modified 2) and in 52% of the samples among the manual and semi-automatized systems (API 20 Strep). In 10 samples with disagreeing results there was no identification concordance among the manual systems, API 20 Strep and the BBL. A PCR agreed with the manual systems and the BBL and did not agree with the API 20 step, in genre, in one sample. Correlating the PCR with the API 20 Strep, there was agreement, in genre, in 01 sample and disagreement with the other systems
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Mankelow, Rowena Chemistry Faculty of Science UNSW. "Creating mesophorous materials by liquid crystal templating of readily available materials." Awarded by:University of New South Wales, 2003. http://handle.unsw.edu.au/1959.4/38346.

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Books on the topic "-BBO crystal"

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Shui jing jian shang bao dian. Shanghai: Shanghai ke xue ji zhu chu ban she, 2009.

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Shui jing bao dian. Taibei Shi: Chun mao qi ye you xian gong si, 1999.

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Qihua, Zhang, ed. xiao diao shi mi ni zhu bao: Mini crystal bead bags. Taibei Shi: Qi yin chu ban she, 2006.

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Shui jing cheng bao de yue guang: Moonlight over the crystal palace. Beijing: Zuo jia chu ban she, 2010.

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Xie, Yue'e. Shi shang bao shi yu shi wu =: Gem craft. Xianggang: Wan li ji gou, De li shu ju, 2005.

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Okahata, Yoshio. Baiosenshingu no tame no suishō hasshinshi maikurobaransu-hō: Genri kara ōyōrei made = Quartz-crystal microbalance for bio-sensing, QCM. Tōkyō-to Bunkyō-ku: Kōdansha, 2013.

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Shui jing bao shi de ling xing gong neng. Taibei Shi: Chun mao qi ye you xian gong si, 1994.

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ZnO bao mo zhi bei ji qi guang, dian xing neng yan jiu. Shanghai Shi: Shanghai da xue chu ban she, 2010.

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Xu, Huazhen. Shui jing wan chuan shi yong shou ce (Neng yuan bao shi xi lie). Qun mao qi ye you xian gong si, 1996.

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Book chapters on the topic "-BBO crystal"

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Danielius, R., A. Dubietis, G. Valiulis, and A. Piskarskas. "Effective Compression of Ultrashort Pulses During Sum-Frequency Generation in BBO Crystal." In Ultrafast Processes in Spectroscopy, 387–90. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-5897-2_87.

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Gangwar, Swati, Shibu Saha, Parag Sharma, V. K. Jaiswal, and Ranjana Mehrotra. "Theoretical Calculation of Joint Spectral Intensity of Type-I BBO Crystal for SPDC." In Springer Proceedings in Physics, 211–14. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9259-1_47.

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Lin, Yi-Hsin. "Liquid Crystals for Bio-medical Applications." In Topics in Applied Physics, 337–54. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-9392-6_15.

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Surdo, S., F. Carpignano, A. Giannetti, L. M. Strambini, C. Trono, F. Baldini, S. Merlo, and G. Barillaro. "Photonic Crystal Optofluidic Silicon Microsystems for (Bio)Sensing." In Lecture Notes in Electrical Engineering, 353–57. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-3860-1_63.

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Huang, Yi-Zhi, Li-Ming Wu, and Mao-Chun Hong. "Cation Effect in Doped BBO and Halogen Anion Effect in Pb2B5O9X (X− = I−, Br−, Cl−)." In Structure-Property Relationships in Non-Linear Optical Crystals I, 223–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/430_2011_68.

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Wong-Ng, Winnie, Boris Paretzkin, and Edwin R. Fuller. "Crystal Chemistry and Phase Equilibria of the BaO-R2O3-CuO Systems." In Advances in X-Ray Analysis, 453–65. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4613-9996-4_51.

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Yao, Xin, Masaru Nakamura, Minoru Tagami, and Yuh Shiohara. "Growth Rate and Superconductivity of Y(Sm)BCO Single Crystals." In Advances in Superconductivity IX, 757–60. Tokyo: Springer Japan, 1997. http://dx.doi.org/10.1007/978-4-431-68473-2_26.

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Chaudhary, Kamal Kumar, Pooja Kannojia, and Nidhi Mishra. "Liquid Crystal Systems in Drug Delivery." In Advances in Medical Technologies and Clinical Practice, 217–43. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-0751-2.ch009.

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Liquid crystals have been recently studied as novel drug delivery system. The reason behind this is their similarity to colloidal systems in living organisms. They have proven to be advantageous over Traditional, Dermal, Parentral and Oral Dosage forms. Liquid crystals are thermodynamically stable and possess long shelf life. Liquid crystals show bio adhesive properties and sustained release effects. Objective of this book chapter is to provide in-depth information of Pharmaceutical crystal technology. It shall deal with cubic and hexagonal liquid crystal and their applications in Drug delivery system.
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Massaro, Alessandro. "Photonic Crystal Waveguides and Bio-Sensors." In Photonic Crystals - Introduction, Applications and Theory. InTech, 2012. http://dx.doi.org/10.5772/32052.

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Kirkham, Jennifer, Colin Robinson, Simon Wood, D. Alistair Smith, Steven Brookes, and Roger Shore. "Initiation and Modulation of Crystal Growth in Skeletal Tissues." In Bio-Implant Interface. CRC Press, 2003. http://dx.doi.org/10.1201/9780203491430.sec4.

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Conference papers on the topic "-BBO crystal"

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Estacio, Elmer, Shigeki Saito, Tomoharu Nakazato, Yusuke Furukawa, Toshihiro Tatsumi, Minh Hong Pham, Marilou Cadatal, et al. "Terahertz birefringence of β-BaB2O4 (BBO) crystal." In 2008 Conference on Lasers and Electro-Optics (CLEO). IEEE, 2008. http://dx.doi.org/10.1109/cleo.2008.4551731.

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Yuan, Yiqian. "Wideband tunable UV laser sources by BBO crystal." In International Conference on Optoelectronic Science and Engineering '90. SPIE, 1990. http://dx.doi.org/10.1117/12.2294822.

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Huang, Jingguo, Zhiming Huang, Yury M. Andreev, Grigory V. Lanskii, Andrey A. Lisenko, Valery F. Losev, Dmitriy M. Lubenko, and Nazar A. Nikolaev. "THz wave generation in nonlinear crystal β-BBO." In 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). IEEE, 2019. http://dx.doi.org/10.1109/irmmw-thz.2019.8874165.

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Bammer, F., T. Schumi, and R. Petkovsek. "A new material for single crystal modulators: BBO." In SPIE Optics + Optoelectronics, edited by Joachim Hein, Luis O. Silva, Georg Korn, Leonida A. Gizzi, and Chris Edwards. SPIE, 2011. http://dx.doi.org/10.1117/12.883521.

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Lin, J. T. "Type I Versus Type II BBO Crystal For Frequency Conversion." In 1988 Los Angeles Symposium--O-E/LASE '88, edited by Philippe M. Fauchet and Karl H. Guenther. SPIE, 1988. http://dx.doi.org/10.1117/12.944441.

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Jia, Yudong, Xiaoqing Zhang, Tianyi Zhang, and Lingling Lu. "BBO crystal component design for ultra-short laser pulse measurement." In 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), edited by Yadong Jiang, Junsheng Yu, and Bernard Kippelen. SPIE, 2014. http://dx.doi.org/10.1117/12.2070852.

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Lubenko, Dmitrii M., Gregory V. Lansky, Nazar A. Nikolaev, Evgenii A. Sandabkin, Valery F. Losev, and Yury M. Andreev. "Generation of THz emission in nonlinear BBO crystal at room temperature." In XIV International Conference on Pulsed Lasers and Laser Applications (AMPL-2019), edited by Anton V. Klimkin, Victor F. Tarasenko, and Maxim V. Trigub. SPIE, 2019. http://dx.doi.org/10.1117/12.2554152.

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Lu, Shi-Ping. "High power sum frequency generation of 230.8-223.2 nm in BBO crystal." In International Conference on Optoelectronic Science and Engineering '90. SPIE, 1990. http://dx.doi.org/10.1117/12.2294773.

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Kokh, Alexandr E., Nadegda G. Kononova, Vladimir N. Popov, and Pawel W. Mokruchnikov. "BBO crystal growth in static and rotating heat fields of variable symmetry." In Photonics West 2001 - LASE, edited by Jeffrey W. Pierce and Kathleen I. Schaffers. SPIE, 2001. http://dx.doi.org/10.1117/12.424640.

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Wang, Li, Jinfeng Zhou, and Liu Huang. "Linewidth compression and measurement in BBO crystal optical parametric generation and amplifier." In Optics and Optoelectronic Inspection and Control: Techniques, Applications, and Instruments, edited by Hong Liu and Qingming Luo. SPIE, 2000. http://dx.doi.org/10.1117/12.403933.

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Reports on the topic "-BBO crystal"

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Strouse, Geoffrey F. Assembling Nano-Materials by Bio-Scaffolding: Crystal Engineering in Nano-Electronics. Fort Belvoir, VA: Defense Technical Information Center, March 2000. http://dx.doi.org/10.21236/ada393942.

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