Article
Chemistry, Physical
Ting Hu, Zhi Xing, Lu Huang, Dengxue Li, Xiangchuan Meng, Xiaotian Hu, Yiwang Chen
Summary: To address the limitations of two-dimensional perovskites in photovoltaic applications, a strategy for developing high-quality patterned 2D perovskites was proposed. The patterned films showed improved light absorption and interfacial contact, leading to enhanced efficiencies and stability of the solar cells.
CHEMISTRY OF MATERIALS
(2022)
Article
Engineering, Biomedical
Mahya Ganjian, Khashayar Modaresifar, Dionysios Rompolas, Lidy E. E. Fratila-Apachitei, Amir A. A. Zadpoor
Summary: Developing a high-throughput nanopatterning technique with precise control over feature dimensions is crucial for studying cell-nanopattern interactions. This study presents a process that fulfills these criteria by using electron-beam lithography to fabricate controlled arrays of submicron pillars and developing etching procedures to create the desired height. The study demonstrates the significance of the fabricated pillars in inducing osteogenic differentiation and utilizes replication techniques to pattern bio-instructive surfaces. Overall, the method enables the precise fabrication of submicron and nanopatterns for systematic cell studies.
ACTA BIOMATERIALIA
(2022)
Article
Optics
Florian Bienert, Thomas Graf, Marwan Abdou Ahmed
Summary: In this paper, a theoretical investigation is conducted on deliberately bending the substrate during laser interference lithography to compensate for the period chirp. By optimizing the surface geometry and using an off-center placement of the substrate with a fourth-order polynomial, effective compensation for the period chirp is achieved.
Article
Physics, Multidisciplinary
Xianglin Hao, Ke Yin, Jianlong Zou, Ruibin Wang, Yuangen Huang, Xikui Ma, Tianyu Dong
Summary: Significant progress has been made in nonradiative wireless power transfer (WPT) technology with the utilization of the parity-time (PT) symmetry concept. In this study, we extend the standard second-order PT-symmetric Hamiltonian to a high-order symmetric tridiagonal pseudo-Hermitian Hamiltonian, allowing for the relaxation of limitations in multisource/multiload systems based on non-Hermitian physics. We propose a three-mode pseudo-Hermitian dual-transmitter-single-receiver circuit and demonstrate that robust efficiency and stable frequency WPT can be achieved without the presence of PT symmetry. Furthermore, no active tuning is required when the coupling coefficient between the intermediate transmitter and the receiver is changed. The application of pseudo-Hermitian theory to classical circuit systems provides new possibilities for expanding the application of coupled multicoil systems.
PHYSICAL REVIEW LETTERS
(2023)
Article
Biochemistry & Molecular Biology
Natalia Turek, Piotr Pala, Andrea Szpecht, Adrian Zajac, Teresa Sembratowicz, Tadeusz Martynkien, Marcin Smiglak, Katarzyna Komorowska
Summary: We propose a method to fabricate microstructures on the tip of an optical fiber using a UV soft-imprint process of a polymerizable ionic liquid-based optical resist. The process involves using an ionic liquid with UV-sensitive groups and non-hazardous propylene glycol as a liquid material for imprinting. The method is simple and can lead to the fabrication of diffraction gratings and a grism component for an optical fiber spectrometer.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Lea Marichez, Genevieve Chadeyron, Daniel Zambon, Francois Reveret, Audrey Potdevin, Damien Boyer, Valentin Gate, Isabelle Verrier, Damien Jamon, Emilie Gamet, Yves Jourlin
Summary: Sol-gel layers doped with Rhodamine B phosphors were microstructured using nanoimprint lithography to produce sub-lambda 2D gratings. Surface microstructuring improved fluorophore emission and resulted in 3-4 times higher emissions compared to flat surfaces. This approach holds great promise for low-cost, high-performance anti-counterfeiting marking processes and object traceability based on unique optical effects.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Bharat Nowduri, Anette Britz-Grell, Monika Saumer, Dominique Decker
Summary: Nanostructuring is a promising approach to improve biosensors by tailoring functional layers and enhancing characteristics such as signal transmission and cell-surface coupling. However, effective techniques to recreate natural nanostructures with random distribution are still lacking.
Article
Nanoscience & Nanotechnology
Shady Sayed, P. R. Selvaganapathy
Summary: A new imprinting technique enables the production of high-resolution nanostructures below 50 nm, with the preservation of topographical features achieved by applying constraints in the vertical direction.
Article
Engineering, Electrical & Electronic
Ran Zhang, Da Huang, Yuanyi Fan, Xiao Liu, Ze Liu, Jinkui Chu
Summary: This study proposes a new method for fabricating nanochannels using nanoimprint lithography, with silicon nitride as a bonding layer to achieve efficient bonding between nanochannels and PDMS microchannels. Experimental results show that the fabricated nanochannels have high accuracy and strength, meeting the expected quality of fabrication.
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Stefanie Lochmann, Susann Kintzel, Yannik Braeuniger, Thomas Otto, En Zhang, Julia Grothe, Stefan Kaskel
Summary: A combination of soft lithographic printing and soft templating was used to fabricate high-resolution interdigitated micro-supercapacitors with high surface area ordered mesoporous carbons. The devices, printed with nano-imprint lithography, have crack-free structures, low specific resistance, and show good device capacitance.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Physical
O. Aleksejeva, N. Nilsson, V Genevskiy, K. Thulin, S. Shleev
Summary: The study successfully designed a dual-feature photobioanode and combined it with an indium tin oxide biocathode to create a photoelectric biosupercapacitor with remarkable characteristics.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Christine Thanner, Martin Eibelhuber
Summary: The UV Nanoimprint Lithography is efficient in producing resist layers with features ranging from micrometers to nanometers. Understanding material properties, pattern size, and shape is crucial for optimizing processes for reliable manufacturing. Comparing results for different pattern geometries can provide a helpful overview of relevant process parameters.
Article
Multidisciplinary Sciences
Woo Young Kim, Bo Wook Seo, Sang Hoon Lee, Tae Gyung Lee, Sin Kwon, Won Seok Chang, Sang-Hoon Nam, Nicholas X. Fang, Seok Kim, Young Tae Cho
Summary: A challenge in making a flexible mold stamp using roll-to-roll nanoimprint lithography is to increase area while minimizing perceptible seams. A method that enables the fabrication of scalable, quasi-seamless functional surfaces without the use of alignment marks is proposed. This method is capable of fabricating scalable functional surfaces and imprint molds with quasi-seamless and alignment mark-free patterning.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Dayang Lin, Jinbo Liu, Ross Haroldson, Jiyoung Moon, Zhitong Li, Anvar Zakhidov, Wenchuang Hu, Qing Gu
Summary: This study overcomes the challenge of achieving high responsivity and fast speed simultaneously in metal-semiconductor-metal (MSM) perovskite photodetectors (PSPDs) by using a directly patterned nanograting methylammonium lead iodide (MAPbI3) film and interdigitated indium tin oxide (ITO) electrodes. The PSPDs exhibit excellent optoelectronic properties and maintain good photocurrent performance after 20 days of air exposure.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Physical
Yan Gu, Yishuo Zhang, Jieqiong Lin, Huibo Zhao, Haihang Ma, Hongwei Yao, Mingshuo Kang, Bin Fu, Silin Liu
Summary: In this study, a piezoelectric-driven vibration-assisted UV nanoimprint method was proposed to improve the performance of diffraction gratings. It was found that introducing one-dimensional lateral vibrations with low frequency and low amplitude improved surface quality and filling rate of the grating. The effects of grating properties and vibration parameters were investigated, and a novel asymmetric vibration stage was designed. The method was verified to accurately fabricate diffraction gratings with superior performance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Wided Chebil, Anisha Gokarna, Afif Fouzri, Nejeh Hamdaoui, Komla Nomenyo, Gilles Lerondel
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Engineering, Electrical & Electronic
F. B. Abdallah, A. Benali, M. Triki, E. Dhahri, K. Nomenyo, G. Lerondel
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2019)
Article
Nanoscience & Nanotechnology
Yi Huang, David Legrand, Remi Vincent, Ekoue Athos Dogbe Foli, Derek Nowak, Gilles Lerondel, Renaud Bachelot, Thierry Taliercio, Franziska Barho, Laurent Cerutti, Fernando Gonzalez-Posada, Beng Kang Tay, Aurelien Bruyant
Article
Materials Science, Multidisciplinary
J. Zhou, L. O. Le Cunff, K. Nomenyo, A. Vial, T. Pauporte, G. Lerondel
Article
Physics, Applied
Alma K. Gonzalez-Alcalde, Miguel A. G. Mandujano, Rafael Salas-Montiel, Loic O. Le Cunff, Gilles Lerondel, Eugenio R. Mendez
JOURNAL OF APPLIED PHYSICS
(2019)
Article
Green & Sustainable Science & Technology
S. M. Mizanur Rahman, Junbeum Kim, Gilles Lerondel, Youcef Bouzidi, Laure Clerget
Article
Physics, Applied
Anisha Gokarna, Roy Aad, Junze Zhou, Komla Nomenyo, Alain Lusson, Patrice Miska, Gilles Lerondel
JOURNAL OF APPLIED PHYSICS
(2019)
Article
Multidisciplinary Sciences
Junze Zhou, Komla Nomenyo, Clotaire Chevalier Cesar, Alain Lusson, Adam Schwartzberg, Chun-Chieh Yen, Wei-Yen Woon, Gilles Lerondel
SCIENTIFIC REPORTS
(2020)
Article
Optics
C. Silvestre Castro, E. R. Mendez, A. Vial, G. Lerondel, Y. Battie, A. Bruyant, R. Vincent
Article
Materials Science, Coatings & Films
L. Radjehi, L. Aissani, A. Djelloul, S. Lamri, K. Nomenyo, S. Achache, G. Lerondel, F. Sanchette
Summary: The experimental results show that the critical temperature for the transformation of Cu4O3 phase to Cu2O phase is 300 degrees C during vacuum annealing treatment at different temperatures. Increasing the annealing temperature leads to a more compact morphology, with the grain shape changing from elongated to spherical, and the film structure showing a coexistence of Cu4O3 and Cu2O mixture. UV-VIS analysis reveals a gradual increase in transmittances and a maximum band gap value of 2 eV at 500 degrees C corresponding to the Cu2O phase.
SURFACE ENGINEERING
(2021)
Article
Chemistry, Analytical
Nour Beydoun, Yann Niberon, Laurent Arnaud, Julien Proust, Komla Nomenyo, Shuwen Zeng, Gilles Lerondel, Aurelien Bruyant
Summary: This research demonstrates that applying a thin layer of aluminum oxide to copper films can effectively slow down the oxidation rate. This simple method could provide a new approach for producing alternative and more sustainable biochips.
Review
Chemistry, Multidisciplinary
Jimmy Soueiti, Rim Sarieddine, Hind Kadiri, Akram Alhussein, Gilles Lerondel, Roland Habchi
Summary: Since the discovery of black silicon, scientists worldwide have been exploring various methods to utilize this super material in different industries due to its low reflectivity and excellent electronic and optoelectronic properties. This review presents common fabrication methods of black silicon, including metal-assisted chemical etching, reactive ion etching, and femto-second laser irradiation. It assesses different nanostructured silicon surfaces based on their reflectivity and applicable properties in both visible and infrared ranges. The review also discusses the most cost-efficient technique for mass production of black silicon and potential alternative materials to replace silicon. Furthermore, it investigates the applications of black silicon in solar cells, IR photo-detectors, and antibacterial purposes, along with the challenges faced.
Article
Chemistry, Multidisciplinary
Alina Muravitskaya, Anisha Gokarna, Artur Movsesyan, Sergei Kostcheev, Anna Rumyantseva, Christophe Couteau, Gilles Lerondel, Anne-Laure Baudrion, Sergey Gaponenko, Pierre-Michel Adam
Proceedings Paper
Materials Science, Multidisciplinary
J. Ph Girard, W. Geng, G. Lerondel, C. Couteau
OXIDE-BASED MATERIALS AND DEVICES X
(2019)
Article
Materials Science, Multidisciplinary
A. Iskandar, A. Gwiazda, J. Younes, M. Kazan, A. Bruyant, M. Tabbal, G. Lerondel