Article
Biochemistry & Molecular Biology
Roberto Eggenhoffner, Paola Ghisellini, Cristina Rando, Eugenia Pechkova, Tercio Terencio, Barbara Mazzolai, Luca Giacomelli, Katia Barbaro, Stefano Benedicenti
Summary: The possibility of improving dental restorative materials through the addition of fillers is investigated. The surface morphological properties of composite resins with different fillers are characterized and compared using analytical techniques. Ways to optimize the mechanical, surface, and aesthetic properties of reinforced polymer composites for dental treatments are discussed.
Article
Polymer Science
Khalil D. Omotosho, Zachary Lyon, Elena V. Shevchenko, Diana Berman
Summary: The conformal nanoporous inorganic coatings with accessible pores that are stable under applied thermal and mechanical stresses represent an important class of materials used in the design of sensors, optical coatings, and biomedical systems. In this study, porous AlOx and ZnO coatings were synthesized using the sequential infiltration synthesis (SIS) method. The experiment showed that alumina precursors infiltrate both polymer templates more efficiently than zinc oxide precursors. The study also investigated the porosity and mechanical stability of the coatings under different conditions, demonstrating their potential application in various environments and temperature conditions.
Article
Chemistry, Multidisciplinary
Alexander M. Haruk, Pravini S. Fernando, Detlef-M Smilgies, Jeffrey M. Mativetsky
Summary: Nanoconfinement of organic semiconductors in nanoporous templates can manipulate polymorphism and molecular orientation to form nanowires with controlled dimensions. Upon removal of the template, small molecule systems undergo subtle molecular rearrangement, while polymer systems may experience significant structural rearrangement, leading to networked structures. The study reveals the impact of template removal on nanowire morphology, crystallography, and photophysics in different organic semiconductor systems.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Chemistry, Analytical
Gennady Gorokh, Anna Zakhlebayeva, Igor Taratyn, Andrei Lozovenko, Valery Zhylinski, Michael Iji, Vladimir Fedosenko, Abdelhafed Taleb
Summary: This paper presents the design and fabrication process of an efficient gas sensor. The optimal dimensions and deformation of the sensor elements were determined using geometric modeling and calculated moduli of elasticity and thermal conductivity coefficients. SnxBikMoyOz thin films were used as gas-sensitive layers and showed different resistance and sensitivity at different temperatures.
Article
Nanoscience & Nanotechnology
R. Magalhaes, M. P. Proenca, J. P. Araujo, C. Nunes, A. M. Pereira, C. T. Sousa
Summary: One-dimensional FePt nanowires have emerged as promising nanomaterials for biomedical applications due to their high biocompatibility and chemical inertness. In this work, the fabrication of FePt nanowires was achieved through pulsed electrodeposition into nanoporous aluminium oxide templates. The composition of the nanostructures was controlled by adjusting the thickness of the barrier layer in the template and the current density during the electrodeposition process. The obtained nanostructures exhibited a heterogeneous length distribution when Pt was present, and the magnetic characterization revealed an increase in magnetic properties with higher Fe atomic percent.
APPLIED NANOSCIENCE
(2022)
Article
Electrochemistry
Samantha Luong, Marwa Atwa, Manila Ozhukil Valappil, Viola Birss
Summary: High surface area carbon powders are commonly used in electrochemical applications, but are susceptible to oxidation and corrosion in oxidizing environments. This study demonstrates that attaching surface groups using diazonium chemistry can effectively reduce surface roughening and oxidation of carbon powders in sulfuric acid, offering insights into the protection mechanisms of these modified carbon surfaces.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Dentistry, Oral Surgery & Medicine
Yueh-Tse Lee, Eric Jein-Wein Liou, Sinn-Wen Chen
Summary: This experimental study demonstrated that nanoporous surfaces of orthodontic miniscrews promote higher survival rates and removal torque values (RTVs) compared to microporous miniscrews. This could be attributed to the presence of TiO2 nanotube structures with thicker oxide layers in the nanoporous miniscrews.
JOURNAL OF OROFACIAL ORTHOPEDICS-FORTSCHRITTE DER KIEFERORTHOPADIE
(2022)
Article
Engineering, Electrical & Electronic
Kai Ni, Pankaj Sharma, Jianchi Zhang, Matthew Jerry, Jeffery A. Smith, Kandabara Tapily, Robert Clark, Souvik Mahapatra, Suman Datta
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2018)
Article
Materials Science, Multidisciplinary
M. A. Mamun, K. Tapily, O. Moutanabbir, H. Baumgart, A. A. Elmustafa
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2018)
Article
Materials Science, Multidisciplinary
M. N. Bhuyian, P. Shao, A. Sengupta, Y. Ding, D. Misra, K. Tapily, R. D. Clark, S. Consiglio, C. S. Wajda, G. J. Leusink
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2018)
Article
Physics, Applied
Vineetha Mukundan, Steven Consiglio, Dina H. Triyoso, Kandabara Tapily, Sandra Schujman, Clemens Mart, Thomas Kaempfe, Wenke Weinreich, Jean Jordan-Sweet, Robert D. Clark, Gert J. Leusink, Alain C. Diebold
APPLIED PHYSICS LETTERS
(2020)
Article
Engineering, Electrical & Electronic
Y. Kim, S-C Seo, S. Consiglio, P. Jamison, H. Higuchi, M. Rasch, E. Y. Wu, D. Kong, I Saraf, C. Catano, R. Muralidhar, S. Nguyen, S. DeVries, O. Van der Straten, M. Sankarapandian, R. N. Pujari, A. Gasasira, S. M. Mcdermott, H. Miyazoe, D. Koty, Q. Yang, H. Yan, R. Clark, K. Tapily, S. Engelmann, R. R. Robison, C. Wajda, A. Mosden, T. Tsunomura, R. Soave, N. Saulnier, W. Haensch, G. Leusink, P. Biolsi, V Narayanan, T. Ando
Summary: The novel process demonstrated reduces forming voltage and increases switching resistance for building a ReRAM stack, making it suitable for scalable AI models. With this process, analog switching characteristics above 100k and 4-bit programming have been achieved, with 90% accuracy in CIFAR-10 inference simulation.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Vineetha Mukundan, Steven Consiglio, Dina H. Triyoso, Kandabara Tapily, Martin E. McBriarty, Sandra Schujman, Karsten Beckmann, Jubin Hazra, Vidya Kaushik, Nathaniel Cady, Robert D. Clark, Gert J. Leusink, Alain C. Diebold
Summary: The recent discovery of ferroelectric behavior in hafnia-based dielectrics attributed to the formation of noncentrosymmetric orthorhombic phase has opened up potential uses in numerous applications. This study reports the relative amounts of ferroelectric orthorhombic phase in thin films of three different compositions and verifies the ferroelectric behavior through polarization measurements. The assessment of relative phase percentages using GIXRD and GI-EXAFS methods provides insights into the structure-property function correlation in these ultrathin hafnia-zirconia films.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Nujhat Tasneem, Muhammad M. Islam, Zheng Wang, Hang Chen, Jae Hur, Dina Triyoso, Steven Consiglio, Kanda Tapily, Robert Clark, Gert Leusink, Shimeng Yu, Winston Chern, Asif Khan
Summary: In this study, ferroelectric ZrO2-based p-type FEFETs were fabricated and the impact of ferroelectric and interfacial oxide layer thickness on device performance was investigated. The results showed that decreasing thickness reduces write voltages and memory window.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Nujhat Tasneem, Muhammad M. Islam, Zheng Wang, Zijian Zhao, Navnidhi Upadhyay, Sarah F. Lombardo, Hang Chen, Jae Hur, Dina Triyoso, Steven Consiglio, Kanda Tapily, Robert Clark, Gert Leusink, Santosh Kurinec, Suman Datta, Shimeng Yu, Kai Ni, Matthias Passlack, Winston Chern, Asif Khan
Summary: This article provides a generalized experimental framework to quantify the efficiency of practical FEFETs in converting the switched ferroelectric polarization into the memory window. Three efficiency metrics are proposed and measured in different FEFETs, revealing the maximum values of memory window efficiency, charge conversion efficiency, and voltage conversion efficiency.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Engineering, Electrical & Electronic
Maximilian Liehr, Jubin Hazra, Karsten Beckmann, Vineetha Mukundan, Ioannis Alexandrou, Timothy Yeow, Joseph Race, Kandabara Tapily, Steven Consiglio, Santosh K. Kurinec, Alain C. Diebold, Nathaniel Cady
Summary: In this work, 100 x 100 nm² ferroelectric tunnel junction (FTJ) devices based on hafnium zirconium oxide (HZO) were fabricated on a 300 mm wafer using a 65 nm CMOS process. The FTJs were integrated between metal 1 (M1) and via 1 (V1) layers and demonstrated optimized thickness and composition. Current measurements showed a tunneling electroresistance (TER) ratio of 2.28, and the TER ratio and endurance behavior were further improved by inserting an Al2O3 tunnel barrier layer. The modified FTJ stack exhibited an enhanced TER ratio and endurance up to 10^6 switching cycles.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Y. Kim, S. C. Seo, P. Jamison, S. Consiglio, H. Higuchi, H. Miyazoe, P. Solomon, S. Kim, T. Gokmen, K. Tapily, R. D. Clark, T. Tsunomura, C. S. Wajda, W. Haensch, R. Soave, G. J. Leusink, V Narayanan, T. Ando
Summary: The article discusses optimizing the hardware process for building a resistive RAM (RRAM) stack to increase switching resistance while reducing forming voltage, which are key factors for scalable analog computing. It also addresses challenges related to non-idealities in switching characteristics through algorithm optimization.
2021 SILICON NANOELECTRONICS WORKSHOP (SNW)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
D. H. Triyoso, R. D. Clark, W. Weinreich, C. Mart, T. Kaempfe, S. Consiglio, V Mukundan, A. Diebold, K. Tapily, C. Wajda, G. Leusink
Summary: This paper discusses the application of Hf/Zr-based oxide films in memory and artificial intelligence, focusing on past research and recent understanding of this material system, as well as the challenges in implementing it in high volume manufacturing.
2021 INTERNATIONAL SYMPOSIUM ON VLSI TECHNOLOGY, SYSTEMS AND APPLICATIONS (VLSI-TSA)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Dina H. Triyoso, Robert D. Clark, Steven Consiglio, Kandabara Tapily, Hisashi Higuchi, Takahiro Hakamata, Danny Newman, Sophia Rogalskyj, Christopher Cole, Angelique Raley, Cory Wajda, Gert Leusink
2020 IEEE ELECTRON DEVICES TECHNOLOGY AND MANUFACTURING CONFERENCE (EDTM 2020)
(2020)
Article
Materials Science, Multidisciplinary
D. Misra, P. Zhao, D. H. Triyoso, V. Kaushik, K. Tapily, R. D. Clark, S. Consiglio, T. Hakamata, C. S. Wajda, G. J. Leusink
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2020)
Article
Materials Science, Multidisciplinary
Vineetha Mukundan, Karsten Beckmann, Kandabara Tapily, Steven Consiglio, Robert Clark, Gert Leusink, Nathaniel Cady, Alain C. Diebold
Proceedings Paper
Materials Science, Multidisciplinary
Richard A. Farrell, Elliott Franke, Kanda Tapily, Jodi Hotalen, David O'Meara, Angelique Raley, Akiteru Ko, Peter Biolsi, Cory Wajda, Gert Leusink, Anton DeVilliers, David Hetzer
ADVANCES IN PATTERNING MATERIALS AND PROCESSES XXXV
(2018)
