Ex situ and in situ characterization studies of spin-coated TiO2 film electrodes for the electrochemical ozone production process

2009 ◽  
Vol 55 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Kenta Kitsuka ◽  
Kazuhiro Kaneda ◽  
Mineo Ikematsu ◽  
Masahiro Iseki ◽  
Katsuhiko Mushiake ◽  
...  
Keyword(s):  
Production Process ◽  
Tio2 Film ◽  
Ozone Production ◽  
Ex Situ ◽  
In Situ Characterization ◽  
Characterization Studies

Ion Beam Study of Early Stages of Growth of GaN films on Sapphire

2002 ◽  
Vol 743 ◽  
Author(s):  
Eugen M. Trifan ◽  
David C. Ingram
Keyword(s):  
Photoelectron Spectroscopy ◽  
Ion Beam ◽  
Ex Situ ◽  
Crystallographic Axis ◽  
In Situ Characterization ◽  
X Ray ◽  
Ion Channeling ◽  
Stages Of Growth ◽  
Early Stages

ABSTRACTAn innovative approach for in-situ characterization has been used in this work to investigate the composition, growth mode, morphology and crystalline ordering of the early stages of growth of GaN films grown on sapphire by MOCVD for substrate temperatures in the range of 450°C to 1050°C. We have performed in-situ characterization by Rutherford Backscattering Spectroscopy (RBS), Ion Channeling, X-ray Photoelectron Spectroscopy (XPS), and Low Energy Electron Diffraction. Ex-situ the films have been characterized by Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD) and thickness profilometry. The films have been grown in an in-house designed and build MOCVD reactor that is attached by UHV lines to the analysis facilities. RBS analysis indicated that the films have the correct stoichiometry, have variable thickness and for low substrate temperature completely cover the substrate while for temperatures 850°C and higher islands are formed that may cover as few as 5 percent of the substrate. From Ion Channeling and LEED we have determined the crystallographic phase to be wurtzite. The crystalline quality increases with higher deposition temperature and with thickness. The films are epitaxialy grown with the <0001> crystallographic axis and planes of the GaN films aligned with the sapphire within 0.2 degrees.

scholarly journals Ex situ and in situ characterization of patterned photoreactive thin organic surface layers using friction force microscopy

Scanning ◽  
2014 ◽  
Vol 36 (6) ◽  
pp. 590-598 ◽  
Author(s):  
Quan Shen ◽  
Matthias Edler ◽  
Thomas Griesser ◽  
Astrid‐Caroline Knall ◽  
Gregor Trimmel ◽  
...  
Keyword(s):  
Friction Force ◽  
Ex Situ ◽  
Friction Force Microscopy ◽  
In Situ Characterization ◽  
Surface Layers ◽  
Force Microscopy

scholarly journals Effect of conductivity, viscosity, and density of water-in-salt electrolytes on the electrochemical behavior of supercapacitors: molecular dynamics simulations and in-situ characterization studies.

2021 ◽  
Author(s):  
Débora Ariana Corrêa da Silva ◽  
Manuel Jonathan Pinzón ◽  
Andresa Messias ◽  
Eudes E. Fileti ◽  
Aline Pascon ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Electrochemical Behavior ◽  
Experimental Studies ◽  
In Situ Characterization ◽  
Advantages And Disadvantages ◽  
Characterization Studies ◽  
Dynamics Simulations ◽  
Density Of Water

It is reported the combination of molecular dynamics simulations and different experimental studies to understand the advantages and disadvantages of departing from conventional (salt-in-water,SiWE) aqueous-based electrolytes to very concentrated (water-in-salt,...

scholarly journals In situ and genetic characterization of Gossypium barbadense populations from the states of Pará and Amapá, Brazil

2009 ◽  
Vol 44 (7) ◽  
pp. 719-725 ◽  
Author(s):  
Vanessa Cavalcante de Almeida ◽  
Lúcia Vieira Hoffmann ◽  
Gilberto Ken It Yokomizo ◽  
Joaquim Nunes da Costa ◽  
Marc Giband ◽  
...  
Keyword(s):  
Genetic Characterization ◽  
Germplasm Collection ◽  
Gossypium Barbadense ◽  
Ex Situ ◽  
In Situ Characterization ◽  
Total Genetic Diversity ◽  
High Level ◽  
Single Sequence

The objective of this work was to characterize the populations of Gossypium barbadense in the states of Amapá and Pará, Brazil. In situ characterization was conducted through interviews with the owners of the plants and environmental observations. Leaf or petal tissue as well as seed samples were collected for genetic characterization by single sequence repeats markers and for storage in germplasm banks, respectively. The plants were maintained in dooryards and used mainly for medical purposes. The genetic analysis showed no heterozygous plants at the loci tested (f = 1), indicating that reproduction occurs mainly through selfing. The total genetic diversity was high (He = 0.39); and a high level of differentiation was observed between cotton plants from the two states (F ST = 0.36). Conventional methods of in situ maintenance of G. barbadense populations are not applicable. The conservation of the genetic variability of populations present in the two states could be achieved through germplasm collection and establishing of ex situ seed banks.

AKURASI KARAKTERISASI TINGKAT IN SITU TANAMAN UBI JALAR PADA DUA KECAMATAN DI KABUPATEN SERAM BAGIAN BARAT

2017 ◽  
Vol 13 (2) ◽  
pp. 103-110
Author(s):  
Helen Hetharie ◽  
Simon H T Raharjo ◽  
Gelora H Augustyn ◽  
Marietje Pesireron
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Leaf Shape ◽  
Morphological Characters ◽  
Morphological Characterization ◽  
Ex Situ ◽  
Survey Method ◽  
In Situ Characterization

Morphological characters of above ground plant parts can be used to distinguishsweet potato accessions. The objective of this study was to get a number of diversity of sweet potato accessions based on above ground part morphology and to determine the accuracy of in situ characterization. This study used a survey method in five villages in two sub-districts, namely Inomosol and Huamual Muka, Western Ceram District. The first stage of this study involved in situ characterization, and the second stage involved planting and ex situ morphological characterization of 2-month-old plants which was used sweet potato descriptors. Data were analyzed descriptively and qualitatively. The results showed that there were 25 accessions of sweet potato found in Huamual Muka and Inomosol Sub-districts, as distinguished by leaf shape and color, leaf patterns and leaf lobe number, petiole and stem colors, and vine twisting tendency. Verification results of the above ground morphology showed accuracy of ≥80% in 3 phenotypes in leaf lobe pattern, shape of central leaf lobe, linear middle leaves, leaves with 1, 5 and 7 lobes, green abaxial leaf veins, 2 petiole color phenotypes, purplish red stem, and stem additional colors. Meanwhile, the accuracy of characterization of other phenotypes was 0-76%. Keywords: diversity, ex situ, Ipomoea batatas, Maluku, morphology   ABSTRAK Karakter morfologi tajuk ubi jalar dapat digunakan sebagai pembeda antar aksesi. Tujuan penelitian untuk mendapatkan sejumlah klon ubi jalar yang beragam berdasarkan morfologi tajuk serta ketepatan karakterisasi morfologi pada tingkat in situ. Penelitian ini menggunakan metode survei di lima desa pada dua kecamatan yaitu kecamatan Inomosol dan Huamual Muka pada Kabupaten Seram Bagian Barat, Propinsi Maluku. Tahap pertama dengan mengkarakterisasi morfologi tajuk di kebun petani (in situ), dan tahap kedua penanaman dan karakterisasi ex situ di kebun koleksi pada umur tanaman 2 bulan menggunakan deskriptor ubi jalar. Data dianalisis secara deskriptif kualitatif. Hasil penelitian menunjukkan bahwa terdapat 25 aksesi ubi jalar di kecamatan Inomosol dan Huamual Muka yang dibedakan berdasarkan bentuk dan warna daun, pola dan jumlah lekuk daun, warna tangkai dan batang, serta sifat membelit. Hasil verifikasi terhadap karakterisasi in situ didapatkan akurasi ≥80% pada 3 fenotip pada pola lekuk daun, daun dengan bentuk bagian tengah linear, daun dengan jumlah cuping 1, 5 dan 7, tulang daun permukaan bawah berwarna hijau, 2 fenotip pada warna tangkai daun, batang berwarna merah keunguan, serta ada warna tambahan pada batang. Sedangkan akurasi karakterisasi pada fenotip lainnya yaitu 0-76%. Kata kunci: ex situ, Ipomoea batatas, keragaman, Maluku, morfologi

scholarly journals Electron Beam Effects on Oxide Thin Films—Structure and Electrical Property Correlations

2019 ◽  
Vol 25 (3) ◽  
pp. 592-600 ◽  
Author(s):  
Krishna Kanth Neelisetty ◽  
Xiaoke Mu ◽  
Sebastian Gutsch ◽  
Alexander Vahl ◽  
Alan Molinari ◽  
...  
Keyword(s):  
Thin Films ◽  
Electron Beam ◽  
Structural Changes ◽  
Ex Situ ◽  
Structure Property ◽  
Oxide Thin Films ◽  
Tem Characterization ◽  
Characterization Studies ◽  
Property Correlations

AbstractIn situ transmission electron microscope (TEM) characterization techniques provide valuable information on structure–property correlations to understand the behavior of materials at the nanoscale. However, understanding nanoscale structures and their interaction with the electron beam is pivotal for the reliable interpretation of in situ/ex situ TEM studies. Here, we report that oxides commonly used in nanoelectronic applications, such as transistor gate oxides or memristive devices, are prone to electron beam induced damage that causes small structural changes even under very low dose conditions, eventually changing their electrical properties as examined via in situ measurements. In this work, silicon, titanium, and niobium oxide thin films are used for in situ TEM electrical characterization studies. The electron beam induced reduction of the oxides turns these insulators into conductors. The conductivity change is reversible by exposure to air, supporting the idea of electron beam reduction of oxides as primary damage mechanism. Through these measurements we propose a limit for the critical dose to be considered for in situ scanning electron microscopy and TEM characterization studies.

In Situ Characterization of Ain Films Grown on Silicon by MOCVD

1998 ◽  
Vol 512 ◽  
Author(s):  
A. D. Serra ◽  
H. H. Richardson
Keyword(s):  
Film Growth ◽  
Growth Parameters ◽  
Emission Spectra ◽  
Ex Situ ◽  
X Ray Diffraction ◽  
In Situ Characterization ◽  
X Ray ◽  
Ir Emission

ABSTRACTFilms of AIN were grown on Si under vacuum pressure at 900°C and examined ex situ with infrared reflectance spectroscopy and microscopy, scanning electron microscopy, x-ray diffraction and rutherford backscattering spectroscopy. Collection of IR emission spectra for in situ characterization was successful and used to identify growth parameters during film growth.

Ex Situ and In Situ Characterization of Vaccine Suspensions in Pre-Filled Syringes

2017 ◽  
Vol 106 (8) ◽  
pp. 2163-2167 ◽  
Author(s):  
Lavinia M. Lewis ◽  
Jianxin Guo ◽  
Ekaterina Torres ◽  
Jijun Wang ◽  
Hilbert Billones ◽  
...  
Keyword(s):  
Ex Situ ◽  
In Situ Characterization
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