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Corrigendum: Synthesis and characterization of mordenite-type zeolites with varying Si/Al ratio (2019 Mater. Res. Express 6 015515)

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materials Research Express 2018年第3期6卷

作者： Mon Bryan Z Gili Marlon T Conato Material Science and Engineering Program College of Science University of the Philippines Diliman Quezon City Philippines Philippine Nuclear Research Institute—Department of Science and Technology Quezon City Philippines Institute of Chemistry University of the Philippines Diliman Quezon City Philippines

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Effect of compaction pressure of green body and heating current on photoluminescence property of ZnO crystal grown by electric current heating method

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IOP Conference Series: materials science and Engineering 2018年第1期290卷

作者： A G E Sutjipto M H Mazwir H L Yee S R Misskon A G M Shaitir M A Jusoh R Othman Material Technology Program Faculty of Industrial Sciences & Technology Universiti Malaysia Pahang (UMP) Gambang 26300 Pahang Malaysia Department of Science in Engineering Faculty of Engineering International Islamic University Malaysia (IIUM) Jalan Gombak 53300 Kuala Lumpur Malaysia

In this study, we reported the effect of applied compaction pressure on green body and electric current heating on ceramic bar on the ZnO crystal growth and its photoluminescence characteristic. Crystals grown on ZnO bar sintered by 1100 °C were mostly on (1 0 1) orientation. Sample with 3.0 ton and 3.0 A for applied pressure and current, respectively revealed the shortest photoluminescence (PL) wavelength of 409.5 nm with highest emission energy of 3.03 eV.

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Galactic transient sources with the Cherenkov Telescope Array Observatory

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Monthly Notices of the Royal Astronomical Society 2025年第1期540卷 205–238页

作者： Abe, K Abe, S Abhir, J Abhishek, A Acero, F Acharyya, A Adam, R Aguasca-Cabot, A Agudo, I Aguirre-Santaella, A Alfaro, J Alfaro, R Alvarez-Crespo, N Alves Batista, R Amans, J-P Amato, E Ambrosi, G Ambrosino, F Angüner, E O Antonelli, L A Aramo, C Arcaro, C Arnesen, T T H Asano, K Ascasibar, Y Aschersleben, J Ashkar, H Augusto Stuani, L Baack, D Backes, M Balazs, C Balbo, M Baquero Larriva, A Barbosa Martins, V Barres de Almeida, U Barrio, J A Barrios-Jiménez, L Batković, I Batzofin, R Baxter, J Becerra González, J Becker Tjus, J Belmont, R Benbow, W Bernete, J Bernlöhr, K Berti, A Bertucci, B Beshley, V Bhattacharjee, P Bhattacharyya, S Bigongiari, C Bissaldi, E Blanch, O Blazek, J Bocchino, F Boisson, C Bolmont, J Bonnoli, G Bonollo, A Bordas, P Bosnjak, Z Bottacini, E Böttcher, M Bradascio, F Bronzini, E Brown, A M Brunelli, G Bulgarelli, A Burelli, I Burger-Scheidlin, C Burmistrov, L Burton, M Buscemi, M Cailleux, J Campoy-Ordaz, A Cantlay, B K Capasso, G Caproni, A Capuzzo-Dolcetta, R Caraveo, P Caroff, S Carosi, A Carosi, R Carquin, E Carrasco, M-S Cascone, E Cassol, F Castaldini, L Castrejon, N Castro-Tirado, A J Cerasole, D Ceribella, G Cerruti, M Chadwick, P M Chaty, S Chen, A W Chernyakova, M Chiavassa, A Chudoba, J Chytka, L Cicciari, G M Cifuentes, A Coimbra Araujo, C H Colapietro, M Conforti, V Contreras, J L Cortina, J Costa, A Costantini, H Cotter, G Cristofari, P Cuevas, O Curtis-Ginsberg, Z D’Aì, A D’Amico, G D’Ammando, F Dai, S Dazzi, F de Bony de Lavergne, M De Caprio, V De Cesare, G De Frondat Laadim, F de Gouveia Dal Pino, E M De Lotto, B De Lucia, M de Martino, D de Menezes, R de Naurois, M de Ona Wilhelmi, E de Souza, V del Peral, L del Valle, M V Delgado, C Dell’aiera, M Della Valle, M della Volpe, D Depaoli, D Devin, J Di Girolamo, T Di Piano, A Di Pierro, F Di Tria, R Di Venere, L Diebold, S Dignam, C Dima, R Dinesh, A Djuvsland, J Dominik, R M Dominis Prester, D Donini, A Dorner, D Dörner, J Doro, M Dubos, C Ducci, L Dwarkadas, V V Ebr, J Eckner, C Egberts, K Einecke, S Elsässer, D Emery Department of Physics Tokai University 4-1-1 Kita-Kaname Hiratsuka Kanagawa 259-1292 Japan Institute for Cosmic Ray Research University of Tokyo 5-1-5 Kashiwa-no-ha Kashiwa Chiba 277-8582 Japan ETH Zürich Institute for Particle Physics and Astrophysics Otto-Stern-Weg 5 CH-8093 Zürich Switzerland INFN and Università degli Studi di Siena Dipartimento di Scienze Fisiche della Terra e dell’Ambiente (DSFTA) Sezione di Fisica Via Roma 56 I-53100 Siena Italy Université Paris-Saclay Université Paris Cité CEA CNRS AIM F-91191 Gif-sur-Yvette Cedex France FSLAC IRL 2009 CNRS/IAC E-38205 La Laguna Tenerife Spain University of Alabama Tuscaloosa Department of Physics and Astronomy Gallalee Hall Box 870324 Tuscaloosa AL 35487-0324 USA Université Côte d’Azur Observatoire de la Côte d’Azur CNRS Laboratoire Lagrange UF 06304 Nice France Laboratoire Leprince-Ringuet CNRS/IN2P3 École Polytechnique Institut Polytechnique de Paris F-91120 Palaiseau France Departament de Física Quàntica i Astrofísica Institut de Ciències del Cosmos Universitat de Barcelona IEEC-UB Martí i Franquès 1 E-08028 Barcelona Spain Instituto de Astrofísica de Andalucía-CSIC Glorieta de la Astronomía s/n E-18008 Granada Spain Institute for Computational Cosmology and Department of Physics Durham University South Road Durham DH1 3LE UK Pontificia Universidad Católica de Chile Av. Libertador Bernardo O’Higgins 340 8331150 Santiago Chile Universidad Nacional Autónoma de México Delegación Coyoacán 04510 Ciudad de México Mexico IPARCOS-UCM Instituto de Física de Partículas y del Cosmos and EMFTEL Department Universidad Complutense de Madrid E-28040 Madrid Spain Instituto de Física Teórica UAM/CSIC and Departamento de Física Teórica Universidad Autónoma de Madrid c/ Nicolás Cabrera 13-15 Campus de Cantoblanco UAM E-28049 Madrid Spain LUTH GEPI and LERMA Observatoire de Paris Université PSL Université Paris Cité CNRS 5 place Jules Janssen F-92190 Meudon France INAF – Osservatorio

A wide variety of Galactic sources show transient emission at soft and hard X-ray energies: low- and high-mass X-ray binaries containing compact objects, isolated neutron stars exhibiting extreme variability as magnetars as well as pulsar-wind nebulae. Although most of them can show emission up to MeV and/or GeV energies, many have not yet been detected in the TeV domain by Imaging Atmospheric Cherenkov Telescopes. In this paper, we explore the feasibility of detecting new Galactic transients with the Cherenkov Telescope Array Observatory (CTAO) and the prospects for studying them with Target of Opportunity observations. We show that CTAO will likely detect new sources in the TeV regime, such as the massive microquasars in the Cygnus region, low-mass X-ray binaries with low-viewing angle, flaring emission from the Crab pulsar-wind nebula or other novae explosions, among others. Since some of these sources could also exhibit emission at larger time-scales, we additionally test their detectability at longer exposures. We finally discuss the multiwavelength synergies with other instruments and large astronomical facilities.

关键词： binaries: general stars: magnetars novae cataclysmic variables pulsars: general gamma-rays: general

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Different Chemical Compound Profiles of Indonesian Coffee Beans as Studied Chromatography/Mass Spectrometry

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IOP Conference Series: Earth and Environmental science 2019年第1期276卷

作者： Surjani Wonorahardjo Nurakhmah Yuniawati Antonius D. P. Molo Hanumi O. Rusdi Hari Purnomo Department of Chemistry Faculty of Mathematics and Science Universitas Negeri Malang Jl. Semarang 5 Malang 65145 Indonesia Centre of Advanced Material for Renewable Energy State Universitas Negeri Malang Jl. Semarang 5 Malang 65145 Indonesia Magister Program in Chemistry Departement Universitas Negeri Malang Jl. Semarang 5 Malang 65145 Indonesia Food Technology Department Ciputra University UC Town CitraLand Surabaya 60219 Indonesia

Coffee is a favourite beverage worldwide, with all of its benefits. The taste and flavour of coffee depending on the chemical components of the coffee. And the presence of chemicals in the coffee ground depends on the original tree as well as on processing. In this report, some volatiles from ground and brewed coffee beans of Robusta, Arabica, and peaberry coffee beans were extracted to be described after chemical analysis. Mainly gas chromatography/mass spectrometry methods were the main spectroscopy utilized to obtain chemistry information that was taken from hot brewed coffees. The result showed that peaberry coffee beans were very rich in components compared to others. Arabica coffee beans also had stronger in taste and flavour compared to robusta as seen from the profile compositions of chloroform and n-hexane extracts. Better processing would also be suggested for each type of coffee beans.

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Controlled synthesis, characterization and reduction of graphene oxide: A convenient method for large scale production

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Egyptian Journal of Basic and Applied sciences 2017年第1期4卷 74-79页

作者： Tarko Fentaw Emiru Delele Worku Ayele Material Science and Engineering Program College of Science Bahir Dar University P.O. Box 79 Bahir Dar Ethiopia Department of Chemistry College of Science Bahir Dar University P.O. Box 79 Bahir Dar Ethiopia Energy Research Center Bahir Dar Institute of Technology Bahir Dar University P.O. Box 79 Bahir Dar Ethiopia

In this work, graphene oxide was synthesized by treating graphite powder with KMnO 4 and a mixture of concentrated H 2 SO 4 /H 3 PO 4 and reduced with ascorbic acid to produce reduced graphene oxide. The effects of reaction parameters such as reaction time, reaction temperature and amount of KMnO 4 on the degree of oxidation of graphite powder to graphene oxide were studied. The prepared graphene oxide and reduced graphene oxide were characterized by UV–Visible spectroscopy, FT-IR spectroscopy, and XRD. The results showed that treating graphite powder with KMnO 4 at 40 °C for 12 h resulted in better degree of oxidation. The designed synthesis strategy could be simple/convenient, easily controlled and an alternative approach for large scale production of graphene oxide (GO) and reduced graphene oxide (rGO).

关键词： Graphite powder Graphene oxide Reduced graphene oxide Optical properties Large scale production

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Designing a Perylene Diimide/Fullerene Hybrid as Effective Electron Transporting material in Inverted Perovskite Solar Cells with Enhanced Efficiency and Stability

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Angewandte Chemie 2019年第25期131卷

作者： Zhenghui Luo Fei Wu Teng Zhang Xuan Zeng Yiqun Xiao Tao Liu Cheng Zhong Xinhui Lu Linna Zhu Shihe Yang Chuluo Yang Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Department of Chemistry Wuhan University Wuhan 430072 P. R. China Shenzhen Key Laboratory of Polymer Science and Technology College of Materials Science and Engineering Shenzhen University Shenzhen 518060 P. R. China Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energy Faculty of Materials & Energy Southwest University Chongqing 400715 P. R. China Nano Science and Technology Program Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong P. R. China Department of Physics Chinese University of Hong Kong New Territories Hong Kong P. R. China Guangdong Key Lab of Nano-Micro Material Research School of Chemical Biology and Biotechnology Shenzhen Graduate School Peking University Xili University Town Shenzhen 518055 Guangdong P. R.China

Electron transport materials (ETM) play an important role in the improvement of efficiency and stability for inverted perovskite solar cells (PSCs). This work reports an efficient ETM, named PDI‐C 60 , by the combination of perylene diimide (PDI) and fullerene. Compared to the traditional PCBM, this strategy endows PDI‐C 60 with slightly shallower energy level and higher electron mobility. As a result, the device based on PDI‐C 60 as electron transport layer (ETL) achieves high power conversion efficiency (PCE) of 18.6 %, which is significantly higher than those of the control devices of PCBM (16.6 %) and PDI (13.8 %). The high PCE of the PDI‐C 60 ‐based device can be attributed to the more matching energy level with the perovskite, more efficient charge extraction, transport, and reduced recombination rate. To the best of our knowledge, the PCE of 18.6 % is the highest value in the PSCs using PDI derivatives as ETLs. Moreover, the device with PDI‐C 60 as ETL exhibits better device stability due to the stronger hydrophobic properties of PDI‐C 60 . The strategy using the PDI/fullerene hybrid provides insights for future molecular design of the efficient ETM for the inverted PSCs.

关键词： Elektronentransportmaterial Fullerene Perowskit-Solarzellen Perylendiimide Stromwandlungswirkungsgrad

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Hardness evaluation of carbonate apatite cement based on various ratio of precursor

Hardness evaluation of carbonate apatite cement based on var...

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29th Symposium and Annual Meeting of the International Society for Ceramics in Medicine, ISCM 2017

作者： Djustiana, Nina Amaranila, Mitha Greviana, Nadia Zakaria, Myrna Nurlatifah Sunarso Cahyanto, Arief Department of Dental Material Science and Technology Faculty of Dentistry Universitas Padjadjaran Jalan Raya Bandung-Sumedang KM 21 Jatinangor-West-Java45363 Indonesia Faculty of Dentistry Universitas Padjadjaran Jalan Raya Bandung-Sumedang KM 21 Jatinangor-West-Java45363 Indonesia Department of Endodontology and Operative Dentistry Study Program of Dentistry Universitas Jenderal Achmad Yani Jalan Terusan Jenderal Sudirman PO BOX 148 Cimahi-West-Java Indonesia

ISBN: (纸本)9783035712209

Carbonate Apatite (CO3Ap) cement is considered as an ideal bone substitute due to its biocompatibility and osteoconductivity. Also, CO3Ap cement has the chemical composition that closes to natural bone. During cement preparation, precursors play an important role that affects the properties of CO3Ap cement. Cement hardness is one of the important properties that need to be evaluated before the obtained cement can be applied as a bone substitute. Therefore, the purpose of this study is to determine the effect of precursor ratio of CaCO3 and CaHPO4 on the hardness level of CO3Ap cement. In the present study, the CO3Ap cement was prepared from CaCO3 and CaHPO4. Both Commercial and synthesized CaCO3 were used. The CO3Ap cement obtained from commercial CaCO3 was used as a control group. Synthesized CaCO3 was obtained from Indonesian natural limestone. Three different CaCO3:CaHPO4 ratios, 40:60, 30:70 and 20:80 were mixed with 1 mol/L Na2HPO4. Samples were kept at 37°C with 100% relative humidity for 24 hours then tested using micro Vickers hardness testing machine. The micro Vickers hardness of the control group with CaCO3:CaHPO4 ratio of 40:60, 30:70 and 20:80 were 5.09 VHN, 6.34 VHN, and 6.73 VHN, respectively. Meanwhile, the micro Vickers hardness of the CO3Ap cement obtained from synthesized CaCO3 were 6.22 VHN, 7.50 VHN, and 10.37 VHN for the CaCO3:CaHPO4 ratio of 40:60, 30:70 and 20:80, respectively. The micro Vickers hardness level of CO3Ap cement precursor ratio from the lowest to the highest was 40:60 3Ap cement. The hardness level of CO3Ap cement obtained from synthesized CaCO3 was higher compared with that obtained from commercial CaCO3. © 2017 Trans Tech Publications, Switzerland.

关键词： Calcium carbonate

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Honeycomb Networks of Metal Oxides from Self-Assembling PS-PMMA Block Copolymers

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Microscopy and Microanalysis 2017年第S1期23卷 1654-1655页

作者： Frank Barrows Paul Nealey Tamar Segal-Peretz Liliana Stan Jeffrey Elam Anil Mane Ellie Porath Charudatta Phatak Amanda Petford-Long Applied Physics Program Northwestern University Evanston IL USA Material Science Division Argonne National Laboratory Argonne IL USA Technion- Israel Institute of Technology Haifa Israel Center for Nanoscale Materials Argonne National Laboratory Argonne IL USA Energy Science Division Argonne National Laboratory Argonne IL USA Physics Department University of Chicago Chicago IL USA

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Comparative study on the ionic conductivities and redox properties of LiPF6 and LiTFSI electrolytes and the characteristics of their rechargeable lithium ion batteries

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IOP Conference Series: materials science and Engineering 2018年第1期432卷

作者： A R Septiana W Honggowiranto Sudaryanto E Kartini R Hidayat Physics Program Study Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung Jl. Ganesha 10 40132 West Java Indonesia Center for Science and Technology of Advanced Material National Nuclear Energy Agency of Indonesia Kawasan PUSPIPTEK Serpong Tangerang Selatan 15314 Banten Indonesia

The ionic conductivities of two different electrolytes, namely lithium hexafluorophosphate (LiPF6) and lithium bis (trifluoromethylsulfonyl) imide (LiTFSI), in carbonate-based solvents have been investigated. The ionic conductivity of LiTFSI electrolyte is slightly larger than the LiPF6 electrolyte, namely 2.7 mS/cm vs. 2.4 mS/cm. The results of cyclic voltammetry and electrochemical impedance spectroscopy measurements show that LiTFSI electrolyte exhibit a better reversible redox reaction. Therefore, in this work, the full-cell battery using LiTFSI electrolyte exhibited higher specific capacity than the battery cell using LiPF6 electrolyte, namely 83.1 mAh/g and 101.5 mAh/g for the LiPF6 and LiTFSI electrolytes, respectively. Higher capacity in LiTFSI battery is thus related to better ionic conductivity and reversible redox reaction of LiTFSI electrolyte.

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CuFeO2 formation using fused deposition modeling 3D printing and sintering technique

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Journal of Physics: Conference Series 2017年第1期901卷

作者： A Salea A Dasaesamoh R Prathumwan T Kongkaew K Subannajui Advanced Material Processing Laboratory Material science and engineering program Faculty of science Mahidol University Bangkok 10400 Thailand Faculty of Science technology and Agricultural Yala Rajabhat University Yala 95000 Thailand

CuFeO2 is a metal oxide mineral material which is called delafossite. It can potentially be used as a chemical catalyst, and gas sensing material. There are methods to fabricate CuFeO2 such as chemical synthesis, sintering, sputtering, and chemical vapor deposition. In our work, CuFeO2 is prepared by Fused Deposition Modeling (FDM) 3D printing. The composite filament which composed of Cu and Fe elements is printed in three dimensions, and then sintered and annealed at high temperature to obtain CuFeO2. Suitable polymer blend and maximum percent volume of metal powder are studied. When percent volume of metal powder is increased, melt flow rate of polymer blend is also increased. The most suitable printing condition is reported and the properties of CuFeO2 are observed by Scanning Electron Microscopy, and Dynamic Scanning Calorimeter, X-ray diffraction. As a new method to produce semiconductor, this technique has a potential to allow any scientist or students to design and print a catalyst or sensing material by the most conventional 3D printing machine which is commonly used around the world.

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