Article
Physics, Applied
Hui Xia, Yaqian Liu, Hailu Wang, Tianxin Li, Zhongying Tong, Xiren Chen, Pingping Chen, Weida Hu, Wei Lu
Summary: A feasible route to balance the electric gain and the light absorption efficiency in semiconductor nanowire array has been discovered by injecting photocarriers in the opposite direction, which activates the photoconductive gain to the maximum degree. Experimental results show a high responsivity and bias-voltage control for different working modes.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Dedi, Ping-Chung Lee, Pai-Chun Wei, Yang-Yuan Chen
Summary: This study reports on the thermoelectric properties of topological insulator bismuth selenide nanowires, achieved using a specially designed platform for simultaneous measurements on a single wire. Experimental results on the properties of conductivity, Seebeck coefficient, and thermal conductivity were found to be in good agreement with theoretical studies.
Article
Chemistry, Multidisciplinary
Yuwei Guan, Chunhuan Zhang, Zhen Liu, Yiman Zhao, Ang Ren, Jie Liang, Fengqin Hu, Yong Sheng Zhao
Summary: Single-crystalline perovskite p-n junction nanowire arrays are demonstrated as ultra-sensitive photodetectors, which possess high crystallinity for efficient carrier transport and form built-in electric fields facilitating effective carrier separation. These results provide new insights into the design and construction of high-performance photodetectors for practical optoelectronic applications.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
G. Mannino, M. Condorelli, G. Compagnini, G. Faraci
Summary: Through AFM microscope and Micro-Raman spectrometer, we observed a significant amplification of the Raman peak in a single crystalline Si particle. We also found that thermal effects caused the Raman peak to split into two components when the laser radiation heated the particle. These results provide insights into the propagation mechanism of trapped radiation and the relationship between thermal effects and phonon confinement.
SCIENTIFIC REPORTS
(2023)
Article
Biotechnology & Applied Microbiology
Roey Elnathan, Andrew W. Holle, Jennifer Young, Marina A. George, Omri Heifler, Andriy Goychuk, Erwin Frey, Ralf Kemkemer, Joachim P. Spatz, Alon Kosloff, Fernando Patolsky, Nicolas H. Voelcker
Summary: Programmable nano-bio interfaces with tuneable vertically configured nanostructures are powerful tools for cellular manipulations and interrogations. However, the opaque nature of many nanostructured surfaces makes non-destructive, live-cell characterization challenging.
JOURNAL OF NANOBIOTECHNOLOGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Yunxiao Min, Tao Yan, Chun-Yu Lee, Yu Miao, Chenlong Chen, Min Luo, Ning Ye
Summary: Different morphologies of MgO nanostructures were fabricated by regulating the composition of raw materials and using chemical vapor deposition with gold as a catalyst. The growth orientations of the nanowires changed after reaching a certain length, which was possibly caused by the difference in surface energy and reaction temperature.
DALTON TRANSACTIONS
(2022)
Article
Nanoscience & Nanotechnology
Lukas Wind, Raphael Boeckle, Masiar Sistani, Peter Schweizer, Xavier Maeder, Johann Michler, Corban G. E. Murphey, James Cahoon, Walter M. Weber
Summary: This article discusses the formation of monolithic Al-Si heterostructures using a thermally induced exchange reaction, which provides high-quality and stable interfaces for nanoelectronic devices. Detailed electrical characterizations confirm the symmetric effective Schottky barriers for electrons and holes, demonstrating the potential for reproducible nanojunctions in next-generation electronics.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Marine
P. M. Carrica, Y. Kim, J. E. Martin
Summary: A study on the 10/10 vertical zigzag maneuver of the generic submarine Joubert BB2 was conducted, with CFD simulations matching well with experimental data. Model scale simulations are a good surrogate for full scale for parameters related to motions, but forces are strongly affected by scale.
Article
Chemistry, Multidisciplinary
Ziyuan Li, Li Li, Fan Wang, Lei Xu, Qian Gao, Ahmed Alabadla, Kun Peng, Kaushal Vora, Haroldo T. Hattori, Hark Hoe Tan, Chennupati Jagadish, Lan Fu
Summary: The absorption and photoresponse of nanowires in arrays are influenced by the array geometry and surrounding environment, highlighting the importance of array design for practical applications.
Article
Chemistry, Multidisciplinary
Yuan Wang, Qiaowen Zhao, Sen Liang, Mingliang Mei, Guangwei She, Wensheng Shi, Lixuan Mu
Summary: A silicon nanowire-based fluorescence lifetime thermometer (NWFLT) was developed for measuring intra- and extra-cellular temperatures simultaneously. The NWFLT revealed significant temperature heterogeneity along the longitudinal direction, particularly between the inside and outside of the cell.
CHEMICAL COMMUNICATIONS
(2023)
Article
Thermodynamics
Du Yanzheng, Shi Shaoyi, Miao Tingting, Ma Weigang, Mai Liqiang, Zhang Xing
Summary: Nanowires show excellent thermoelectric performance due to their unique physical properties. In this paper, the thermoelectric properties of suspended Sb2Se3 nanowire were characterized using the T-type method, revealing high thermal and electrical conductivity, as well as low Seebeck coefficient and figure of merit.
JOURNAL OF THERMAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Tetsuro Soejima, Haruki Inoue, Keigo Egashira, Yaozong Yan, Hiroaki Tada
Summary: A simple process has been developed to create single-crystalline beta-MnO2 nanowire arrays on a glass plate, which has a large surface area and functions as a highly active three-dimensional photothermal catalyst under near infrared light. The efficient light harvesting and heat confinement near the reaction field, along with the large surface area, contribute to its excellent performance.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Songyan Yin, Yu Wang, Charlie Kong, Bin Gong, Christopher E. Marjo, Veena Sahajwalla
Summary: This study elucidates the mechanism of synthesizing AlN nanowires from plastic packaging waste, showing the direct nitridation process of aluminum foil and highlighting the growth characteristics of the nanowires. The research provides crucial insights into the intermediate products and the growth of nanowires, offering valuable references for future device applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Optics
Sajad Haghanifar, Paul W. Leu
Summary: We conducted a detailed balance analysis on vertical GaAs nanowire arrays using rigorous coupled-wave analysis (RCWA). Both freestanding and arrayed nanowires on a perfect back reflector were evaluated. Both types of vertical nanowire arrays demonstrated efficiencies surpassing the Shockley Queisser (SQ) or radiative efficiency limit when the nanowires were long enough. The implementation of a back reflector enhanced the efficiency of nanowire solar cells by increasing solar absorption and suppressing emission from the backside of the solar cell. We studied the advantages of light trapping and material reduction in nanowires. Furthermore, we compared the simulations evaluating detailed balance efficiency with ultimate efficiency and showed that ultimate efficiency studies can determine near-optimal solar cells while significantly reducing the number of simulations needed. Although open circuit voltages above the radiative limit can be achieved, tradeoffs with short circuit current must be carefully considered. We also compared our simulation results to claims in the literature that nanowires are capable of exceeding the SQ limit.
Article
Engineering, Electrical & Electronic
Varun Chitransh, Akshatha Shetty, Annoy Kumar Das, Joseph Olorunfemi Ojo, Mummadi Veerachary, Baylon G. Fernandes, Jan Abraham Ferreira
Summary: This article introduces topologies capable of integrating different electrical power sources and presents three possible topologies with renewable energy sources/battery integration, working on the principle of orthogonal power transfer. Power transfer at multiple frequencies shows an effective way of decoupling individual sources, which is validated experimentally in terms of feasibility and potential benefits.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Nadine J. Schrenker, Zhuocheng Xie, Peter Schweizer, Marco Moninger, Felix Werner, Nicolas Karpstein, Mirza Makovic, George D. Spyropoulos, Manuela Goebelt, Silke Christiansen, Christoph J. Brabec, Erik Bitzek, Erdmann Spiecker
Summary: This study investigates the fundamental deformation modes of five-fold twinned AgNWs in anisotropic networks and observes the impact of network anisotropy on electrical performance. By using a scale-bridging microscopy approach, three fundamental deformation modes of NWs are identified, which can explain the behavior observed in the study.
Review
Microscopy
Richard Busch, Christopher Tielemann, Stefan Reinsch, Ralf Mueller, Christian Patzig, Michael Krause, Thomas Hoeche
Summary: A novel method using initial notches for broad ion beam based sample sectioning is introduced, creating terraces with different erosion depths by milling a notch into the sample surface, followed by ion beam erosion. The method allows for efficient access to depth-dependent microstructure of materials and can be applied to both conducting and non-conducting specimens. Experimental parameters influencing preparation success are determined, and the method is used to analyze orientation dependent crystal growth phenomena during growth of surface crystals into the bulk.
Article
Materials Science, Multidisciplinary
E. Parinova, S. S. Antipov, V Sivakov, E. A. Belikov, I. S. Kakuliia, S. Yu Trebunskikh, S. Yu Turishchev
Summary: Successful integration of ferritin Dps protein with silicon nanowires has been demonstrated, allowing effective removal of buffer solution salts while retaining ferritin Dps on the porous surface of silicon nanowires.
RESULTS IN PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
D. Yakimchuk, U. Prigodich, S. E. Demyanov, J. Ustarroz, H. Terryn, K. Baert, S. A. Khubezhov, D. Tishkevich, A. Trukhanov, V Sivakov, E. Yu Kaniukov
Summary: Template synthesis is a method for obtaining nanostructures with predetermined shapes and sizes. This study successfully created silver nanostructures with complex geometry by changing only the pore volume of the template without altering other chemical kinetic conditions, and the growth mechanism of these nanostructures was examined and discussed in detail.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Optics
Wilhelm Eschen, Lars Loetgering, Vittoria Schuster, Robert Klas, Alexander Kirsche, Lutz Berthold, Michael Steinert, Thomas Pertsch, Herbert Gross, Michael Krause, Jens Limpert, Jan Rothhardt
Summary: Microscopy with extreme ultraviolet radiation offers high-resolution imaging and excellent material contrast, making it ideal for studying complex structures and material composition.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Chemistry, Physical
Tingsen Ming, Benjamin Dietzek-Ivansic, Xiaoju Lu, Xiaohua Zuo, Vladimir Sivakov
Summary: This study investigates the effects of decorating highly n-doped silicon nanowires with silver nanoparticles on hydrogen generation. The results show that the presence of silver nanoparticles can enhance the efficiency of hydrogen generation, and the decorated silicon nanowires can maintain their morphology after hydrogen release.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Pharmacology & Pharmacy
E. Tolstik, M. B. Gongalsky, J. Dierks, T. Brand, M. Pernecker, N. V. Pervushin, D. E. Maksutova, K. A. Gonchar, J. V. Samsonova, G. Kopeina, V. Sivakov, L. A. Osminkina, K. Lorenz
Summary: This study evaluated the effectiveness of drug delivery, release, and toxicity of pSiNPs nanocontainers in colon cancer cells and cardiac cells. The results demonstrated that pSiNPs effectively loaded and localized the drug within cells, and showed good tolerance and potential protective effects against toxicity in cardiac cells.
FRONTIERS IN PHARMACOLOGY
(2022)
Article
Microscopy
Michael Krause, Christian Thieme, Georg Schusser, Thomas Hoeche
Summary: This study presents novel workflows for sample preparation using ultra-short pulsed lasers, allowing for reproducible fabrication, safe extraction, and mounting of samples. These workflows are illustrated through nano-CT measurements of glass ceramics and laser-modified glass, while considering the requirements of other analytical techniques. The prepared samples can serve as a starting point for correlative microstructural analyses involving multiple techniques.
JOURNAL OF MICROSCOPY
(2023)
Article
Materials Science, Multidisciplinary
Dzmitry Yakimchuk, Soslan A. Khubezhov, Uladzislau Prigodich, Daria Tishkevich, Sergei Trukhanov, Alex Trukhanov, Vladimir Sivakov, Egor Y. Kaniukov
Summary: This paper presents a detailed study on the influence of the shape of silver nanostructures on the efficiency of Raman signal amplification. It is found that silver crystals, dendrites, and sunflower-like nanostructures can be used for Raman signal amplification in SiO2/Si template, but with different efficiencies.
Article
Chemistry, Multidisciplinary
Sergey Turishchev, Alexander Schleusener, Olga Chuvenkova, Elena Parinova, Poting Liu, Maxim Manyakin, Sergei Kurganskii, Vladimir Sivakov
Summary: The composition, atomic and electronic structure of a silicon nanowire array coated with tin oxide were studied. The results showed that tin-oxide nanocrystals of 20 nm in size formed a continuous and highly developed surface with a complex phase composition. The use of photoemission electron microscopy in XANES mode revealed that the entire SiNW surface is covered with a tin(IV) oxide layer and traces of tin(II) oxide and metallic tin phases.
Article
Chemistry, Multidisciplinary
Poting Liu, Alexander Schleusener, Gabriel Zieger, Arne Bochmann, Matthijs A. van Spronsen, Vladimir Sivakov
Summary: Tin-containing layers with different degrees of oxidation are uniformly distributed along the length of silicon nanowires formed by a top-down method. The electronic and atomic structure of the obtained layers is investigated using nondestructive X-ray absorption spectroscopy. The distribution effect of tin-containing phases in the nanostructured silicon matrix is demonstrated, and the amount and distribution of tin-containing phases can be varied and controlled by adjusting the geometric parameters.
Article
Nanoscience & Nanotechnology
Kirill Gubanov, Manuel Johnson, Melda Akay, Benedikt C. C. Wolz, Dan Shen, Xing Cheng, Silke Christiansen, Rainer H. H. Fink
Summary: Advances in organic materials manufacturing have enabled the creation of electronic devices using solution-processing techniques. This study demonstrates the use of micro-contact for high-quality structured electrodes in top-contact organic field-effect transistors (OFETs) by depositing poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) polymer ink. The optimized solution-processing fabrication of OFETs shows promising potential for simple and cost-effective roll-to-roll manufacturing processes, with comparable electrical performance to transistors with gold electrodes and lower contact resistance (R-c) due to carbon-based organic electrodes.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Lamborghini Sotelo, Tommaso Fontanot, Sanjana Vig, Patrick Herre, Peyman Yousefi, Maria Helena Fernandes, George Sarau, Gerd Leuchs, Silke Christiansen
Summary: This study investigates the effect of the initial surface roughness of TiAl6V4 samples on laser-induced periodic surface structures (LIPSS), surface wettability, and chemistry. Different polishing grain sizes were used to adjust the surface roughness of the samples. Laser irradiation was performed with varying laser power and distance. The resulting structures were characterized by SEM, AFM, Raman spectroscopy, and contact angle measurements. The study also explores the bone implant viability of the generated structures. The results demonstrate that initial surface roughness affects the wettability and orientation of the resulting LIPSS, and structures with higher integrated fluence enhance cell differentiation and reduce bacterial activity, making them promising for bone implant compatibility and durability.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Nanoscience & Nanotechnology
Lucia H. Prado, David Boehringer, Anca Mazare, Lamborghini Sotelo, George Sarau, Silke Christiansen, Ben Fabry, Patrik Schmuki, Sannakaisa Virtanen, Wolfgang H. Goldmann, Alexander B. Tesler
Summary: Researchers have developed a convenient UV-grafting technique to covalently attach silicone-based coatings to solid substrates. The short-time exposure to UV light results in the formation of lubricant-infused slippery surfaces (LISS), while longer exposure leads to the formation of semi-rigid cross-linked polydimethylsiloxane (PDMS) coatings. These coatings exhibit excellent resistance to corrosion and biofouling in aquatic environments. Due to its simple fabrication, low cost, rapid binding kinetics, eco-friendliness, non-toxicity to aquatic life, and excellent wetting-repellent characteristics, this technology has great potential for implementation in aquatic environments.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Computer Science, Interdisciplinary Applications
Benedikt Christopher Wolz, Christian Jaremenko, Florian Vollnhals, Lasse Kling, Jan Wrege, Silke Christiansen
Summary: Through silicon vias (TSVs) are a key enabling technology for interconnection and realization of complex three-dimensional integrated circuit (3D-IC) components. X-ray microscopy (XRM) is a rising method for analyzing the internal structure of samples without destructive sample preparation. However, there is a lack of evaluated scan recipes or best practices for studying TSVs using XRM. In recent years, there has been increased interest in automated machine learning and deep learning approaches for qualitative and quantitative inspection processes.
ENGINEERING REPORTS
(2022)