Article
Optics
Laishram Thoibileima Chanu, Naorem Khelchand Singh
Summary: A well-aligned vertical nickel oxide nanowire was fabricated using glancing angle deposition through electron-beam evaporation at room temperature. After annealing, an increase in crystallite size, a decrease in lattice strain and dislocation density, and an increase in particle size of the nanowire were observed. Photoluminescence emission experiments showed a decrease in defect-related transitions and a broadening of emission peaks after annealing.
JOURNAL OF LUMINESCENCE
(2023)
Review
Chemistry, Analytical
Sarjana Yadav, Sneha Senapati, Samir Kumar, Shashank K. Gahlaut, Jitendra P. Singh
Summary: Glancing angle deposition (GLAD) is a technique for fabricating sculpted micro- and nanostructures with high sensitivity and enhanced optical and catalytic properties. GLAD-based nanostructures have broad applications in sensing, especially in the biomedical field. This review discusses the effects of morphology and deposition conditions on GLAD structures, their biosensing capability, and their use in various biosensing applications.
Article
Materials Science, Multidisciplinary
Zijian Zhou, Kai Ou, Jiahong Dai, Wenting Zhang, Yongliang Tang, Yuxiang Ni, Yudong Xia, Hongyan Wang
Summary: In this study, multifold TiO2 nanorods with highly efficient photocatalytic performance for H-2 production were prepared using electron beam evaporation. The effects of annealing temperature and morphological structure on the photocatalytic performance were investigated. The optimal annealing conditions were found to be 550°C for 300 min in air. The multifold nanorods showed improved photocatalytic performances compared to the no-fold nanorods, with Z2 achieving a maximum photocurrent density of 1.35 mA/cm(2), which was six times higher than Z0 (0.2 mA/cm(2)). The smaller overall charge transfer resistance and larger BET surface area of Z2 were identified as the reasons for the maximum photocurrent density. The increase in specific surface area and number of active sites in the multifold structure contributed to the improved photocatalytic performance.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Engineering, Electrical & Electronic
Ngasepam Monica Devi, Stacy Anastacia Lynrah, Rajshree Rajkumari, Naorem Khelchand Singh
Summary: This study successfully synthesized silver nanoparticles decorated SiOx nanowire arrays on silicon substrates using the GLAD technique. The resulting structures showed a significant enhancement in optical absorption, defect-related emissions in the UV-vis region, and exhibited properties of a Schottky diode. The device also demonstrated low turn-on voltages, high responsivity, detectivity, EQE, and an enhanced photocurrent to dark current contrast ratio, making it a promising candidate for various applications.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Physical
Marcio A. Correa, Armando Ferreira, Raphael M. Tromer, Leonardo D. Machado, Matheus Gamino, Sergio A. N. Franca Junior, Felipe Bohn, Filipe Vaz
Summary: ZnO and doped ZnO films are commonly used as biosensor elements, with room-temperature ferromagnetic behavior observed in all studied samples, including pure ZnO. Computational simulations were used to investigate the origin of ferromagnetism, revealing the influence of vacancy dynamics and columnar geometry on the magnetic properties of the films. This study highlights the potential for inducing/exploring room-temperature ferromagnetism in non-ferromagnetic metal-doped semiconductors for biosensor applications.
Article
Engineering, Electrical & Electronic
Yogita Maithani, Bijit Choudhuri, B. R. Mehta, J. P. Singh
Summary: This study introduces a flexible, conductive, antibacterial, and self-adhesive dry electrode embedded with silver nanorods in polydimethylsiloxane for long-term ECG monitoring. These electrodes have low electrical resistivity and skin contact impedance, comparable signal-to-noise ratio to conventional wet electrodes.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Materials Science, Multidisciplinary
Hannah-Noa Barad, Mariana Alarcon-Correa, Gerardo Salinas, Eran Oren, Florian Peter, Alexander Kuhn, Peer Fischer
Summary: This study presents an integrated fabrication scheme based on glancing angle physical vapor deposition to form a thin-film materials library with controlled variations in nanoshape, multinary composition, and oxidation state on a single large area substrate. The versatility of the method was demonstrated by growing an octonary materials system and revealing variations in several physico-chemical properties. The scheme can be extended to include more starting elements and transferred to other deposition methods, making it an adaptable and versatile platform for combinatorial materials science.
Article
Nanoscience & Nanotechnology
Rajnarayan De, S. Maidul Haque, M. K. Sikdar, P. K. Sahoo, K. Divakar Rao
Summary: The study utilized a modified glancing angle deposition (GLAD) technique to prepare single-sided TiO2 thin films, with an additional flux collimation plate introduced to enhance the collimation of depositing vapour flux. The reduction in TiO2 film refractive index was observed with increasing distance from the vapour source, resulting in excellent anti-reflection properties in coatings deposited at distant positions. The research demonstrates the lowest refractive index of TiO2 achieved together with the fabrication of a TiO2-based broadband single-layer anti-reflection coating.
Article
Green & Sustainable Science & Technology
Jyoti Yadav, Parul Raturi, Sarjana Yadav, J. P. Singh
Summary: This study reports the synthesis of Ag2S nanostructures with zig-zag geometry to enhance the efficiency of water splitting reaction, leading to improved photocurrent density. Theoretical simulations were performed to understand the light absorption mechanism.
Article
Materials Science, Multidisciplinary
Yi-Jun Jen, Wei-Chieh Ma, Ting-Yen Lin
Summary: By obliquely bidepositing TiN thin films with different subdeposit thicknesses, this study observed a morphological transition from a nano-zigzag array to vertically grown columnar structures. The obtained principal refractive indexes explained the anisotropic transmission and reflection, showing the potential for tunable anisotropic properties in TiN nanostructured films for future multilayer designs. The film with a subdeposit thickness of 3 nm exhibited low refractive index and extinction coefficient for visible wavelengths, indicating promising characteristics for applications in optical devices.
Article
Physics, Multidisciplinary
Stefania Oliveri, Jean-Marc Cote, Marina Raschetti, Pierre Roux, Nicolas Martin
Summary: We report on the electronic transport properties of B-doped Si thin films sputter-deposited by glancing angle deposition (GLAD) with a thickness of 400 nm. A series of 9 films were prepared with different deposition angles ranging from 0 degrees to 80 degrees. The results showed that films grown at higher deposition angles exhibited a tilted columnar morphology and higher resistivity, with significant changes in charge carrier mobility and concentration for angles greater than 30 degrees. The findings were discussed in terms of the evolution of structural defects in the columnar architecture of Si GLAD films. ©2023 Elsevier B.V. All rights reserved.
Article
Nanoscience & Nanotechnology
Jamal Ahmad Khan, Yogita Maithani, J. P. Singh
Summary: In this study, Ag2Se nanorod arrays were fabricated using the GLAD technique and two-zone furnace, and Ag2Se planar films of different thickness were also prepared. The tilted Ag(2)Se nanorod arrays exhibited excellent thermoelectric performance with zT of 1.14 and a power factor of 3229.21 μW/m-K-2 at 300 K. The superior thermoelectric properties of the nanorod arrays could be attributed to the unique nanocolumnar architecture that facilitated efficient electron transport and phonon scattering at the interfaces. Furthermore, the nanoindentation measurements showed that the nanorod arrays had lower hardness values and elastic modulus compared to the Ag(2)Se films, indicating improved mechanical properties. The synergistic dependence between the tilt structure and thermoelectric properties, along with the simultaneous improvement in mechanical properties, provides a new avenue for the practical applications of Ag2Se in next-generation flexible thermoelectric devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biophysics
Xun Lu, Seongmin Lee, Jun Kim, Naseem Abbas, Mohsin Ali Badshah, Seok-min Kim
Summary: A selective fabrication method of Ag nanorods on the microcolumn structure using the GLAD process was proposed to enhance the signal-to-background noise ratio of the metal-enhanced fluorescence substrate.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Chemistry, Physical
J. Potocnik, N. Bozinovic, M. Popovic, T. Barudzija, M. Nenadovic, M. Novakovic
Summary: In this study, copper thin films with zigzag and square spiral nanostructures were deposited using glancing angle deposition. The morphological, chemical, structural, optical, and electrical properties of the films were investigated. The results showed that the porousness and growth mechanism of the nanostructures significantly influenced the properties of the films, and the optical and electrical properties were closely related to the concentration of defects.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Gaurav Shukla, S. Angappane
Summary: The study demonstrates the successful growth of high temperature stable anatase phase TiO2 nanostructures using the glancing angle deposition technique. The annealed TiO2 nanorods exhibit unique wetting properties, with the structural contribution playing a key role in contact angle and increasing hydrophobicity over time.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Kenan Ozel, Abdullah Atilgan, Nur Efsan Koksal, Abdullah Yildiz
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Materials Science, Multidisciplinary
A. Atilgan, A. Yildiz, U. Harmanci, M. T. Gulluoglu, K. Salimi
MATERIALS TODAY COMMUNICATIONS
(2020)
Article
Optics
N. E. Koksal, M. Sbeta, A. Yildiz
Article
Physics, Condensed Matter
Nur Efsan Koksal, Mohamed Sbeta, Abdullah Atilgan, Abdullah Yildiz
Summary: The study presents a facile method to produce heterojunction diodes by depositing AGZO thin films on Si substrates and examines the impact of AGZO layer thickness on diode performances. While the thickness of AGZO has insignificant effects on structural, morphological, and optical properties, it can effectively enhance device characteristics. Diodes with 125 nm AGZO exhibit improved performance with remarkable rectification properties.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Energy & Fuels
Aycan Atli, Irem Sutcu, Z. Kerem Yildiz, Abdullah Yildiz
Summary: A simple deposition process was developed to fabricate dye-sensitized solar cells (DSSCs) with significantly improved power conversion efficiency by soaking the compact layer in a solution and preheating it. These results highlight the critical importance of deposition conditions for enhancing the performance of DSSCs.
IEEE JOURNAL OF PHOTOVOLTAICS
(2021)
Review
Chemistry, Multidisciplinary
Cesur Altinkaya, Erkan Aydin, Esma Ugur, Furkan H. Isikgor, Anand S. Subbiah, Michele De Bastiani, Jiang Liu, Aslihan Babayigit, Thomas G. Allen, Frederic Laquai, Abdullah Yildiz, Stefaan De Wolf
Summary: Tin oxide (SnO2) has emerged as a promising alternative to electron-selective layers (ESLs) in perovskite solar cells (PSCs), offering advantages such as high optical transmission, high carrier mobility, and low-temperature processability. It has the potential to play a key role in large-scale deployment and manufacturing.
ADVANCED MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
O. F. Goktas, N. E. Koksal, O. Kaplan, A. Yildiz
Summary: The sol-gel method was used to fabricate Al-doped ZnO (AZO) thin films on p-Si substrates with smooth surfaces and highly oriented crystal structures. The analysis revealed that the AZO/Si heterojunctions exhibited nonideal diode behavior, with the 80 nm thick AZO layer demonstrating good rectifying properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
E. Kutlu-Narin, P. Narin, A. Yildiz, S. B. Lisesivdin
Summary: The study looked at the effects of magnesium content and growth temperature on the optical and structural properties of magnesium zinc oxide films, finding a linear correlation between magnesium mole fraction and magnesium content in the liquid solution. The peak of the (0002) diffraction for the grown samples shifted to higher angles and became stronger with increasing magnesium content in the liquid solution. Both growth temperature and magnesium content in the liquid solution are crucial parameters in controlling the magnesium mole fraction of the samples.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Energy & Fuels
Yavuz Kocak, Abdullah Yildiz
Summary: Utilizing carminic acid as a photosensitizer in dye-sensitized solar cells showed promising results in terms of light absorption and surface anchoring, but the suppression of electron recombination was found to be inadequate. Quantum chemical calculations confirmed the compatibility of carminic acid with the conduction band edge of TiO2, leading to improved photo-conversion efficiency compared to natural dye-based DSSCs under simulated solar light.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Kenan Ozel, Abdullah Yildiz
Summary: The author proposed a novel design scheme by integrating a nanostructured SnO2 layer into the n-SnO2/p-Si heterojunction, resulting in devices with high photoresponsivity, quantum efficiency, and detectivity. These PDs possess self-powered characteristics and exhibit high performance for 311 nm wavelength without any power supply.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Abdullah Atilgan, Ahmet Yigit Kurtulus, Mehmet Fatih Oktem, Abdullah Yildiz
Summary: A simple method was employed to synthesize undoped and W-doped ZnO nanostructures, with temperature strongly affecting the structural, optical, and electrical properties of the films. Undoped NSs showed better performance based on transparency and sheet resistance values, and W-doped ZnO was found to be a promising transparent conducting oxide for various applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Kenan Ozel, Abdullah Yildiz
Summary: This study introduces a p-n heterojunction photodetector based on metal oxide materials, demonstrating efficient detection of UV-B light with high detectivity, responsivity, and UV/visible rejection ratio.
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Abdullah Yildiz, Takwa Chouki, Aycan Atli, Moussab Harb, Sammy W. Verbruggen, Rajeshreddy Ninakanti, Saim Emin
Summary: Transition metal phosphides, particularly the Fe2P phase, show comparable solar-to-current conversion efficiency with platinum (Pt) as a counter electrode in dye-sensitized solar cells (DSSCs) while exhibiting improved stability, making them a promising Pt-free alternative for efficient DSSCs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Betul Sekertekin, Kenan Ozel, Abdullah Atilgan, Abdullah Yildiz
Summary: In this paper, a UV photodiode based on TiO2 nanorods has been successfully fabricated, showing superior UV detection capability. The presented fabrication approach can also be applied to other metal-oxide semiconductor optoelectronic devices.
Article
Engineering, Electrical & Electronic
K. Ozel, A. Yildiz
SENSORS AND ACTUATORS A-PHYSICAL
(2020)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)
