965,421 research outputs found
Bonding InGaAsP/ITO/Si Hybrid Laser With ITO as Cathode and Light-Coupling Material
No full textA 1.5-mu m InGaAsP/ITO/Si hybrid laser with indium tin oxide (ITO) as both a cathode and a light-coupling material is presented. The InGaAsP gain structure with a transparent ITO cathode is flip-chip bonded onto a patterned silicon-on-insulator wafer. The light generated in the InGaAsP multiquantum wells is coupled through the ITO cathode into the Si waveguide to form an InGaAsP/ITO/Si hybrid laser. The threshold current density of this hybrid laser is 20 kA/cm(2) at 210 K. Due to the advantages of post-bonding and simplicity of the fabrication process, such a hybrid laser may be a promising Si light source.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000302534300023&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Engineering, Electrical & ElectronicOpticsPhysics, AppliedSCI(E)EI14ARTICLE8712-7142
Hydroptila nanseiensis Ito 2011
No full textHydroptila nanseiensis Ito 2011, in Ito et al. 2011 (Fig. 6) Hydroptila nanseiensis Ito 2011, in Ito et al. 2011, 14–15, male, female, Japan (Ryukyu).Published as part of Ito, Tomiko, 2021, Descriptions of final instar larvae of six species of the genus Hydroptila Dalman (Trichoptera, Hydroptilidae) in Japan, pp. 339-350 in Zootaxa 4915 (3) on page 347, DOI: 10.11646/zootaxa.4915.3.3, http://zenodo.org/record/445649
ITO-Free Solution-Processed Flexible Electrochromic Devices Based on PEDOT:PSS as Transparent Conducting Electrode
No full textElectrochromic devices (ECDs) are
emerging as novel technology for various applications ranging from
commercialized smart window glasses, goggles, and autodimming rear
view mirrors to uncommon yet more sophisticated applications such
as infrared camouflage in military and thermal control in space satellites.
The development of low-power, lightweight, inexpensive, and flexible
devices is the need of the hour. In this respect, utilizing PEDOT:PSS
as transparent conducting electrode (TCE) to replace indium tin oxide
(ITO) and metal based TCEs for ECDs is a promising solution for the
aforementioned requirements. In this work we have demonstrated the
performance of PEDOT:PSS films coated on flexible substrates, treated
with PTSA-DMSO, as TCEs for ECD applications and their comparison
with that of ITO based ECDs. The PEDOT:PSS based flexible TCEs used
in this study have conductivity of 1400–1500 S·cm–1 and figure of merit (FoM) of 70–77. The process
of increasing the conductivity of PEDOT:PSS films also led to the
broadening of the conducting potential window (CPW), which is important
for electrochemical applications of PEDOT:PSS when used as a stand-alone
electrode. More than achieving a comparable electrochromic contrast,
switching time, and coloration efficiency with respect to the ITO
based ECDs, PEDOT:PSS devices also had the added advantage of good
mechanical flexibility. These devices demonstrated superior stability
during electrochemical cycling and multiple mechanical bending tests,
making them an inexpensive alternative to the costly ITO based ECD
technology
Método potenciodinâmico aplicado ao estudo da difusão iônica limitada por camada porosa em substratos de ITO
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Física, Florianópolis, 2013.Esta dissertação tem como objetivo estudar o comportamento do substrato transparente condutor composto por óxido de índio dopado com estanho (ITO) durante tratamento catódico em eletrólitos inertes de NaCl, KCl, KI e AlCl3, em diferentes concentrações possuindo a mesma força iônica e em seu pH natural. Após o tratamento é observada a formação de partículas esféricas metálicas de In-Sn, decorrentes da redução do ITO. A morfologia dos depósitos varia com o eletrólito usado e com a velocidade do processo de redução. Os resultados obtidos através dos estudos potenciodinâmicos dos eletrodos indicam um processo controlado por resistência ôhmica. O comportamento resistivo observado durante a formação da camada porosa metálica sugere a aplicação do modelo de resistência de camada porosa LPRM (do inglês Layer-Pore Resistance Model) para análise do processo. No entanto, o modelo LPRM, na forma como foi originalmente desenvolvido, não descreve bem o processo. Uma modificação ao modelo é proposta, a partir da qual, logra-se obter bons ajustes do modelo às curvas potenciodinâmicas. O conjunto de parâmetros extraído do ajuste de curvas obtidas com diferentes taxas de varredura mostra boa correlação com o crescimento da camada porosa e pode ser interpretado como uma medida do caminho difusivo que os íons do eletrólito necessitam percorrer para atingir a camada de ITO subjacente. A modificação da morfologia do substrato durante o processo de redução catódica foi caracterizada por microscopia eletrônica de varredura (MEV) e microscopia de força atômica (AFM). Da análise da rugosidade superficial, obtida das micrografias de AFM, extraiu-se o comprimento de correlação, que mede a granularidade da camada porosa. Usando conceitos simples de passeio aleatório, foi possível estabelecer uma relação entre o caminho difusivo iônico determinado eletroquimicamente, e a morfologia da camada porosa, para os diferentes eletrólitos utilizados.Abstract : This work investigates the behavior of transparent conducting substrates composed of indium tin oxide (ITO) during cathodic treatment in inert aqueous electrolytes (NaCl, KCl, KI e AlCl3), using different concentrations with same ionic force. The treatment causes the formation of spherical metallic particles of In-Sn, resulting from ITO reduction. It is possible to observe that the morphology of deposits is affected by the electrolyte composition and sweep rate. Potentiodynamic studies indicate a process controlled by Ohmic resistance. The resistive behavior observed during growth of the porous metallic layer suggests the application of the Layer-Pore Resistance Model (LPRM) to analyze the results. However, the LPRM model, in its original form, does not give a good description of the process. A modified version of the LPRM is proposed, which yields very good fits to the potentiodynamic curves. The set of fit parameters extracted from the curves, obtained at different scan rates, shows a good correlation with the growth of the porous layer, and could be interpreted as a measure of diffusion paths that ions must travel to reach the underlying ITO layer. The changes on morphology of the substrates during the cathodic reduction was characterized by scanning electron microscope (SEM) and atomic force microscope (AFM). From the roughness analysis obtained from the AFM micrographs, a correlation length was determined that describes the granularity of the porous layer. Using simple concepts of random walk, it was possible to establish a relationship between the ionic diffusion path determined electrochemically, and the morphology of porous layer, for the different electrolytes used
Magnetoresistance in triphenyl-diamine derivative blue organic light emitting devices
No full textCopyright 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. This article appeared in Journal of Applied Physics 103, 043706 (2008) and may be found at
Satoshi Ito Oral History Interview
No full textSatoshi Ito was Instructor in Sociology and Anthropology, 1965-1966; Assistant Professor of Sociology, 1966-1971; Associate Professor of Sociology, 1971-2002; and an Emeritus Professor from 2002 forward at the College of William and Mary."Stony the Road We Trod" was an independent study project conducted by College of William and Mary student Jenay Jackson (class of 2005) in 2005. This oral history project was intended to serve as the initial part of an ongoing project to document African American history at the College of William and Mary. Ms. Jackson interviewed College administrators, faculty, and alumni
Microptila orienthula Kjaerandsen and Ito
No full text<i>Microptila orienthula</i> Kjaerandsen and Ito <p>(Figs 1, 4 A, 5)</p> <p> <i>Microptila orienthula</i> Kjaerandsen and Ito 2009, 177–180, male, female, Japan (Hokkaido, Honshu); Nishimoto and Nishimoto 2014, 63, Japan (Honshu).</p> <p> <b>Male</b>. Length of each forewing and hind wing 1.6–2.2 mm and 1.4–1.8 mm, respectively (n = 4). Antennae each 19-segmented and 0.6–0.9 mm long (n = 4).</p> <p>Genitalia (Figs. 1 B–1G). Segment IX (IX) annular, dorsally with deep and wide triangular excision at anterior margin, posterior margin with shallow and wide concavity, transverse tergal bridge very narrow, dorsal midline about 1/10 as long as segment IX in dorsal view (Fig. 1 C); in ventral view (Fig. 1 D) anteroventral margin with shallow triangular concavity, posteroventral margin with deep wide concavity. Tergite X (t X) quadrate with large median triangular concavity caudally in dorsal view (Fig. 1 C), semimembranous and transparent, lateral margins lightly sclerotized. Subgenital plate (sg plate) semimembranous with slightly sclerotized lateral margins, twice as long as tergite X (Figs. 1 B, 1C), long ovate with tiny U- or V-shaped excavation caudally in dorsal view (Fig. 1 E). Inferior appendages (inf app) well developed, setose, without any branches, each with basal 2/3 stout, tapered in distal 1/3 (Figs. 1 B, 1D), apex in ventral view incurved and acute (Fig. 1 D), in ventromesal view (Fig. 1 F) basal 2/ 3 with longitudinal setose ridge mesally and apical 1/3 triangular with strongly sclerotized dorsomesal edge. Phallus elongate, with slender titillator (ti) arising near apical 1/3, wrapped around phallus 1.5 times (Fig. 1 G).</p> <p> <b>Female</b>. Length of each forewing and hind wing 1.3–1.8 mm and 1.3–1.6 mm, respectively (n = 4). Antennae each 18-segmented and 0.4–0.6 mm long (n = 4).</p> <p>Abdominal segments I–VII densely covered with long thick setae. Segment VII (VII) tergite and sternite fused laterally, conical in ventral view (Fig. 1 H). Segment VIII (VIII) almost as long as segment VII, often withdrawn into segment VII, ventroposterior margin slightly protruded in some specimens (Figs. 1 H–1J).</p> <p> <b>Specimens examined</b>. <b>Type specimens</b>: 3 males, 2 females, <b>Japan</b>, <b>Hokkaido</b>, Shiriuchi-cho, hygropetric zone beside Idesu-gawa, 12.vii.2008, T. Ito (CBM-ZI 135131–135135, on slides).</p> <p> <b>Additional records</b> (other than those of Kjaerandsen and Ito 2009): <b>Japan, Honshu, Niigata</b>: 42 males, 12 females, Itoigawa-shi, Kotaki-gawa, 300–400 m above sea level (a.s.l.), 14.viii.1998, T. Hattori. <b>Toyama</b>: 3 males, Nanto-shi, Taira-mura, Nashidani-gawa, 450 m a.s.l., 30.vii.1995, T. Hattori. <b>Shizuoka</b>: 10 males, 2 females, Shizuoka-shi, Nyujima, 400 m a.s.l., hygropetric zone, 5.vii.1989, T. Hattori; 10 males, same locality, 11.vi.1999, T. Hattori; 2 males, same locality, 18.vi.2001, T. Hattori; 18 males, 2 females, Shizuoka-shi, Yugashima, 400 m a.s.l., hygropetric zone, 30.viii.2005, T. Hattori; 3 males, 1 female, Shizuoka-shi, Akazawa, hygropetric zone, 2.ix.2009, T. Hattori; 1 male, same locality, 19.ix.2013, T. Hattori & T. Ito; 9 males, 4 females, Hamamatsu-shi, Komyo-san, 29.viii.2009, T. Torii. <b>Aichi</b>: 5 males, 2 females, Shinshiro-shi, Horai, 4.viii.1998, H. Nishimoto. <b>Shiga</b>: 2 males, Higashi-omi-shi, Eigenji, Kanzaki-gawa, hygropetric zone near Kazakoshi-bashi, 9.ix.2014, T. Ito; 8 males, 1 female, same locality, 11.vi.2016, T. Ito. <b>Shikoku</b>, Kochi: 2 males, Tosa-shimizu-shi, Akasho, small stream, 21.v.1999, T. Ito & A. Ohkawa. <b>Kyushu</b>, Nagasaki: 1 male, Isahaya-shi, Korai-cho, Todoroki-kyo, 18.ix.2000, A. Ohkawa. <b>Yakushima</b>: 1 male, 2 females, Nagata, Hamanaka, Nakano-bashi, 30.viii.1986, Y. Takemon; 1 female, unnamed tributary of Miyanoura-gawa, 10.v.2006, T. Ito.</p> <p> <b>Remarks</b>. The males of this species are distinguished from other congeneric species by the large, stout inferior appendages and long oval subgenital plate with tiny U- or V-shaped excavation apically.</p> <p> <b>Habitat</b> (Fig. 4 A). Adults of this species were collected from hygropetric zones and fast flowing streams with large rocks.</p> <p> <b>Distribution</b> (Fig. 5). Japan (Hokkaido, Honshu, Shikoku, Kyushu, Yakushima). New to Shikoku, Kyushu and Yakushima.</p> <p> <b>Japanese name</b>. Mikuro-himetobikera.</p>Published as part of <i>Ito, Tomiko, 2017, The genus Microptila Ris (Trichoptera, Hydroptilidae) in Japan, pp. 104-112 in Zootaxa 4232 (1)</i> on pages 105-107, DOI: 10.11646/zootaxa.4232.1.7, <a href="http://zenodo.org/record/292743">http://zenodo.org/record/292743</a>
Microptila orienthula Kjaerandsen & Ito 2009
No full text<i>Microptila orienthula</i> Kjaerandsen & Ito 2009 <p>(Figs 1–3)</p> <p> <i>Microptila orienthula</i> Kjaerandsen & Ito 2009, 177–180, male, female, Japan (Hokkaido, Honshu); Ito 2017a, 105–107, male, female, Japan (Hokkaido, Honshu, Shikoku, Kyushu, Yakushima); Ito in press, adult flight period, Japan (Honshu).</p> <p> <b>Final instar larva</b> (Figs 1, 2, 3D, 3E).</p> <p>Body length up to about 2.2 mm in alcohol.</p> <p> <i>Head</i> (Figs 1A–1G). Elongate, sides subparallel, ecdysial sutures indistinct.Width about 0.22 mm; width: length: depth about 1.0: 1.25: 0.85; uniformly brown; longest seta (seta 9 of Wiggins 1996) situated mesal side of eye spot, about 1.5 times head width. Labrum symmetrical with four pairs of setae at anterior half and numerous fine setae on anterior margin. Mandibles robust, asymmetrical, left one with acute apex and long mesal blade distinguished by basal notch, right one with blunt apex and sinuous mesal blade lacking distinguishing notch. Antennae situated mid-way between eye spots and anterolateral corners, each with seta at mid-length and sensillum apically. Dorsal surface densely covered with short hair-like spines (<i>sensu</i> Graf <i>et al</i>. 2004; “minute spinules” of Wells 1985).</p> <p> <i>Thoracic segments</i> (Figs 2A–2F). Pronotum completely covered with pair of brown plates, round at anterolateral corners, concave at posterolateral corners. Each of meso- and metanota covered with a pair of rectangular brown plates. Dorsal surfaces of plates covered with short hair-like spines. Number of setae about 30 on each plate of pronotum, about 20 on each plate of meso- and metanota. Sternites absent.</p> <p>Foretrochantins and pleura of meso- and metathoraces subquadrate. Thoracic legs similar in structure except foretibiae each with apicoventral lobe with subapicolateral seta, subapicodistal plate with brush of fine hairs, and stout apical spur; femora successively longer from foreleg to hind leg.</p> <p> <i>Abdomen</i> (Figs 1A, 2A, 2G, 2H, 3D, 3E). Slightly compressed laterally, distended, segments gradually enlarging from I to IV (or V) then decreasing, curvature of abdomen slight. Segment I with ellipsoidal tergite, very weakly sclerotized especially at middle, with three pairs of setae on tergite and about 5–6 pairs of setae around tergite; dorsal chloride epithelia on terga II–VIII; large dorsal ellipsoidal sclerite on segment IX; two roundish sclerites on segment X dorsolaterally; anal claws each with two accessary hooks.</p> <p> <i>Case</i> (Figs 1I, 1J, 3D). Compressed laterally, composed of two ellipsoidal valves, with slit openings at anterior and posterior edges, made of silk together with few slender plant pieces. Length up to 3.0 mm.</p> <p> <b>Diagnosis from other congeneric species.</b> The larva of <i>M. orienthula</i> is very similar to that of a West Palearctic species, <i>M. minutissima</i> Ris, but can be discriminated from the latter by hair-like spines of thoracic dorsal plates; the hair-like spines are present on each of pro-, meso- and metanota in <i>M. orienthula</i> (Fig. 2B), but on pronotum and anterior half of mesonotum in <i>M. minutissima</i> (Graf <i>et al</i>. 2004).</p> <p> <b>Microhabitat</b> (Figs 3A–3C). The <i>M. orienthula</i> larvae were studied in a hygropetric habitat,Akazawa, Shizuoka, Honshu, Japan (35.0386˚N, 138.2594˚E, 140 m a.s.l.) on 14 April 2023. At this site, 85 males and 25 females of <i>M. orienthula</i>, 985 males of <i>Stactobia japonica</i> Iwata 1930, 246 males of <i>S. distinguenda</i> Botosaneanu & Nozaki 1996 and many unidentified females of <i>Stactobia</i> were collected with net sweeping efforts during 44 visits by Mr. Toshio Hattori during 2009–2013 (Ito in press).</p> <p> <i>Microptila</i> larvae were not found on bare, uncovered rock surfaces (where <i>Stactobia</i> pupae and larvae were abundant; Ito in press, figs 1D, 1E) but rather in plant clusters composed of mosses and liverworts, sometimes accompanied by short grasses (Figs 3B, 3C, indicated by circles). Larvae of many caddisfly taxa, such as <i>Rhyacophila</i> sp. (Rhyacophilidae), <i>Dolophilodes</i> sp. (Philopotamidae), <i>Homoplectra</i> sp. (Hydropsychidae), <i>Micrasema</i> sp. (Brachycentridae), <i>Helicophyche</i> sp. (Helicopsychidae), were also found in the plant clusters. Moreover, water mites, freshwater worms, freshwater crabs, and larvae of various stoneflies and midges were found among these plants.</p> <p> Four hydroptilid genera, <i>Plethus</i> Hagen 1887, <i>Pseudoxyethira</i> Schmid 1958, <i>Stactobia</i> McLachlan 1880, and <i>Microptila</i>, are found in waterfalls and hygropetric habitats in Japan (Ito 2017a, 2017b, 2017c; Ito & Saito 2016). Among them, the larvae and cases of <i>Plethus</i> and <i>Stactobia</i> are depressed dorsoventrally and larvae live on bare rock surfaces (Ito 2017c; Ito & Saito 2016). Their flattened shapes are adapted for life on top of flattened hard substrates in running waters (Huryn <i>et al</i>. 2008; table 9. A). On the other hand, the larva and case of <i>Pseudoxyethira</i> is compressed laterally and larvae live among mosses in hygropetric habitats and waterfalls (Cairns & Wells 2008; Ito 2017a). <i>Microptila</i> is the second genus known to inhabit plant clusters of hygropetric habitats and are similar to <i>Pseudoxyethira</i> in their laterally compressed larvae and cases.</p> <p> <b>Distribution.</b> Japan (Hokkaido, Honshu, Shikoku, Kyushu, Yakushima).</p> <p> <b>Specimens examined</b>. <b>Japan, Honshu</b>: 11 larvae, hygropetric habitat, Akazawa, Shizuoka, 14.iv.2023, T. Ito.</p> <p> <b>Japanese name.</b> Mikuro-hime-tobikera.</p>Published as part of <i>Ito, Tomiko, 2023, The larva of Microptila orienthula Kjaerandsen & Ito (Trichoptera, Hydroptilidae), with a description of its microhabitat in Japan, pp. 445-450 in Zootaxa 5357 (3)</i> on pages 445-449, DOI: 10.11646/zootaxa.5357.3.7, <a href="http://zenodo.org/record/10063481">http://zenodo.org/record/10063481</a>
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Ito and Sarmiento
No full textFuko Ito hails from Kobe, Japan where she grew her love for storytelling through reading books and comics. She moved to the US to study printmaking and drawing and currently resides and works in Lexington, KY as an artist and educator.Link to the artist\u27s website. Eugene Sarmiento is an artist and educator from Oak Cliff, Dallas, TX currently teaching in Concord, NH. Link to the artist\u27s website.https://egrove.olemiss.edu/art_talks/1011/thumbnail.jp
- …
