Article
Engineering, Electrical & Electronic
Anu Katiyar, Nishant Kumar, R. K. Shukla, Anchal Srivastava
Summary: ZnO nanorods are grown along the c-axis using a sonicated sol-gel immersion method at a lower temperature, where the seed-layer precursor molarity and immersion time significantly impact the structural and morphological properties of the nanorods. These hexagonal nanorods exhibit green emission and persistent photoconductivity, which can be partially quenched through annealing. Annealing also helps improve transmittance and tunes the band gap value of bulk ZnO.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Juan Agustin Badan, Guillermo Jauregui, Elena Navarrete-Astorga, Rodrigo Henriquez, Francisco Martin Jimenez, Daniel Ariosa, Enrique A. Dalchiele
Summary: The effect of solid-state thermal dewetting (SSD) parameters on the Ag NPs decorated ZnO NRs arrays was investigated, showing that bandgap tuning and light manipulation at the nanoscale can be achieved by controlling the size of Ag nanoparticles. Additionally, the surface plasmonic effect caused by silver nanoparticles attached to ZnO NRs arrays enhances room temperature photoluminescence (PL) emission and suppresses the visible light emission.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
D. Q. Trung, N. V. Quang, M. T. Tran, N. V. Du, N. Tu, N. D. Hung, Dao Xuan Viet, D. D. Anh, P. T. Huy
Summary: A novel broad-band-emitting phosphor based on Al-doped ZnO was reported, showing full spectrum emission with promising potential for UV-pump warm white light-emitting diodes.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Mengjie Li, Qilong Wang, Ji Xu, Jian Zhang, Zhiyang Qi, Xiaobing Zhang
Summary: In this study, vertical carbon nanotube arrays (VCNTAs) are reported as high-density electron sources that can modulate emission processes with laser pulses under a high applied electric field and laser illumination. The emission process shows sensitivity to a power law of the laser intensity as bias electric field and laser power density increase, supporting the mechanism of optically induced field emission followed by over-the-barrier emission. The polarization dependence exhibits a cosine behavior, confirming the likelihood of optically induced field emission.
Article
Chemistry, Inorganic & Nuclear
Majid Jafar Tafreshi, Sanaz Alamdari
Summary: This research focused on the preparation and characterization of a novel zinc oxide/cadmium tungstate (ZnO/CWO) nanocomposite using a simple chemical method. The nanocomposite exhibited strong light emission in the blue-green range and showed an excellent sensitivity under alpha irradiation, surpassing the individual components of pure ZnO or CWO. Structural analysis through FESEM, TEM, XRD, XPS, and EDX confirmed a uniform distribution of spherical nanoparticles with characteristic peaks of ZnO, CWO, and related elements, while Fourier transform infrared spectroscopy revealed the presence of various functional groups. Overall, the optical quality of the ZnO/CWO nanocomposite was found to be improved compared with pure ZnO and CWO, showcasing its potential for radiation detection and optoelectronic device applications.
APPLIED RADIATION AND ISOTOPES
(2022)
Article
Materials Science, Multidisciplinary
Wei Zhou, Yabin Hao, Xizhi Wang, Min Li, Shan Liang
Summary: Gold nanorods were synthesized using a modified seed-mediated wet chemical growth method with reduced concentrations of hexadecyltrimethylammonium bromide and sodium oleate. The weak reducing agent dopamine was employed in the growth solution. By adjusting the amounts of hexadecyltrimethylammonium bromide, silver nitrate, and hydrochloric acid in the growth solution, gold nanorods with longitudinal surface plasmon resonance wavelength ranging from 780 to 1115 nm were obtained. Furthermore, the photothermal properties of the gold nanorods at 1064 nm were investigated, demonstrating their potential applications as photothermal agents in the second near-infrared window.
Article
Chemistry, Multidisciplinary
Youqiang Chen, Xinni Zhang
Summary: By alloying Co nanoparticles on the crucial top parts of the SiC NWs, the turn-on field and the maximum current density can be drastically improved, resulting in superior field emission properties.
Article
Nanoscience & Nanotechnology
Siddharth Choudhary, Garima Vashisht, Rakesh Malik, Chung-Li Dong, Chi-Liang Chen, Asokan Kandasami, S. Annapoorni
Summary: The stimulating effects of interfacial charge transfer process between spherical Ag nanoparticles and shuttlecock-shaped ZnO nanostructures were reported through UV-visible spectroscopy and x-ray absorption spectroscopy. The red shift in plasmonic peak, increase in Urbach energy, enhanced intensity of deep-level emission, and the presence of red and blue emissions evolving with temperature indicate the interfacial interactions and increased recombination rate of electron-hole pairs. The decrease in intensities and emerging features in O K-edge and Zn L-edge suggest the charge transfer from Ag to ZnO at the interface of ZnO/Ag hybrids. Additionally, the differences in absorption edges with alternating light on/off conditions were analyzed for potential applications of this ZnO-based system.
Article
Chemistry, Multidisciplinary
Didi Prasetyo Benu, Amelia Andriani, Nadiatus Silmi, Fry Voni Steky, Fainan Failamani, Brian Yuliarto, Rino Rakhmata Mukti, Veinardi Suendo
Summary: In this study, fibrous ZnO microrods were synthesized using a macroemulsion-mediated solvothermal method. The results showed that ZnO synthesized from two different precursors had similar crystal structures but different fibrous morphologies. ZnO synthesized from zinc acetate exhibited a more uniform fibrous morphology and showed better photocatalytic performance.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Physics, Applied
M. T. Tran, D. Q. Trung, N. V. Du, N. Tu, N. M. Hieu, N. N. Ha, N. D. Hung, D. X. Viet, N. V. Quang, P. T. Huy
Summary: ZnS nanostructures with exceptional features, such as low lasing thresholds and easy fabrication, show great potential as gain media and optical waveguides. In this study, high-crystalline ZnS nanowires and nanobelts were synthesized using a thermal evaporation method, achieving remarkably low lasing thresholds and high-quality performances. The analysis of various techniques confirms the excellent quality of the synthesized nanostructures. The small full width at half maximum values and high-quality factors further highlight their great performance, making them prime candidates for ultraviolet photonic devices.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Pao-Chuan Shih, Girish Rughoobur, Zachary Engel, Habib Ahmad, William Alan Doolittle, Akintunde Akinwande, Tomas Palacios
Summary: This study demonstrates the fabrication of AlGaN SAG field emitter arrays (FEAs) using a new self-aligned-gate (SAG) process and digital-etching tip sharpening. These AlGaN SAGFEAs show comparable performance to silicon devices and exhibit high-performance and stable operation over a prolonged period.
IEEE ELECTRON DEVICE LETTERS
(2022)
Review
Chemistry, Multidisciplinary
Breanna Clarke, Khashayar Ghandi
Summary: This review provides an overview of the structure and properties of ZnO nanostructures and discusses their applications in various industries. It examines previous research on ZnO nanorod growth using UV-visible spectroscopy and scanning electron microscopy, and highlights the importance of synthesis processes in determining nanostructure properties and applications. The review also unveils the mechanism of ZnO nanostructure growth and suggests future directions for research.
Article
Engineering, Electrical & Electronic
Jai Singh, Amit Srivastava
Summary: The study demonstrates the transformation of nanostructures in ZnO thin films with increasing growth temperature, with substrate temperature and growth time identified as determinant factors. Optical measurements indicate a decreasing optical band gap in ZnO films with increasing substrate temperature. The aligned ZnO nanocones exhibit stable field emission properties with a low threshold field and high field enhancement factor.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Engineering, Environmental
Chandra Bhan, Animes Kumar Golder
Summary: In this study, hierarchical 2D vertically aligned nanostructures (VANs) of ZnO were synthesized using a bioinspired method for electrocatalytic sensing. The ZnO-VANs showed excellent performance in electrochemical sensing.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Chi Li, Mengxue Guan, Hao Hong, Ke Chen, Xiaowei Wang, He Ma, Aiwei Wang, Zhenjun Li, Hai Hu, Jianfeng Xiao, Jiayu Dai, Xiangang Wan, Kaihui Liu, Sheng Meng, Qing Dai
Summary: This research demonstrates coherent ultrafast photoemission from a single quantized energy level of a carbon nanotube, which has a narrow energy spread and the potential to achieve subangstrom spatial resolution and femtosecond temporal resolution for electron probe.
Article
Polymer Science
Marcos R. Cardoso, Renato J. Martins, Apurba Dev, Tobias Voss, Cleber R. Mendonca
JOURNAL OF APPLIED POLYMER SCIENCE
(2015)
Article
Biophysics
Apurba Dev, Josef Horak, Andreas Kaiser, Xichen Yuan, Anna Perols, Per Bjork, Amelie Eriksson Karlstrom, Pascal Kleimann, Jan Linnros
BIOSENSORS & BIOELECTRONICS
(2016)
Article
Chemistry, Multidisciplinary
Josef Horak, Ronnie Jansson, Apurba Dev, Linnea Nileback, Kiarash Behnam, Jan Linnros, My Hedhammar, Amelie Eriksson Karlstrom
ADVANCED FUNCTIONAL MATERIALS
(2018)
Article
Chemistry, Analytical
Matteo Parmeggiani, Apurba Dev, Per Bjork, Jan Linnros
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Chemistry, Multidisciplinary
A. Dev, B. Dev Choudhury, A. Abedin, S. Anand
ADVANCED FUNCTIONAL MATERIALS
(2014)
Article
Chemistry, Multidisciplinary
Wondwosen Metaferia, Apurba Dev, Himanshu Kataria, Carl Junesand, Yan-Ting Sun, Srinivasan Anand, Juha Tommila, Galia Pozina, Lars Hultman, Mircea Guina, Tapio Niemi, Sebastian Lourdudoss
Article
Physics, Applied
Jan-Peter Richters, Apurba Dev, Carsten Ronning, Jurgen Gutowski, Tobias Voss
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2014)
Article
Polymer Science
Ruben Dario Fonseca, Daniel Souza Correa, Elaine Cristina Paris, Vinicius Tribuzi, Apurba Dev, Tobias Voss, Pedro Henrique Benites Aoki, Carlos Jose Leopoldo Constantino, Cleber Renato Mendonca
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
(2014)
Article
Chemistry, Multidisciplinary
Sara Cavallaro, Josef Horak, Petra Haag, Dhanu Gupta, Christiane Stiller, Siddharth S. Sahu, Andre Gorgens, Hithesh K. Gatty, Kristina Viktorsson, Samir El Andaloussi, Rolf Lewensohn, Arnelie E. Karlstrom, Jan Linnros, Apurba Dev
Article
Biophysics
Siddharth Sourabh Sahu, Christiane Stiller, Sara Cavallaro, Amelie Eriksson Karlstrom, Jan Linnros, Apurba Dev
BIOSENSORS & BIOELECTRONICS
(2020)
Article
Biophysics
Siddharth Sourabh Sahu, Christiane Stiller, Elizabeth Paz Gomero, Abel Nagy, Amelie Eriksson Karlstrom, Jan Linnros, Apurba Dev
Summary: An electrical immuno-sandwich assay utilizing an electrokinetic-based streaming current method is proposed, demonstrating improved target selectivity and linear concentration dependent response. The study explores the role of electric charge in detection sensitivity and the potential for further improvement, showcasing a clear enhancement of detection signal with increasing DNA lengths conjugated to the detection probe.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Sara Cavallaro, Federico Pevere, Fredrik Stridfeldt, Andre Gorgens, Carolina Paba, Siddharth S. Sahu, Doste R. Mamand, Dhanu Gupta, Samir El Andaloussi, Jan Linnros, Apurba Dev
Summary: This study for the first time simultaneously investigated multiple parameters on small extracellular vesicles (sEVs) to identify both common and cell line-specific subpopulations, providing insights into their biology and functions.
Article
Nanoscience & Nanotechnology
Siddharth Sourabh Sahu, Sara Cavallaro, Petra Haag, Abel Nagy, Amelie Eriksson Karlstrom, Rolf Lewensohn, Kristina Viktorsson, Jan Linnros, Apurba Dev
Summary: The study introduces a method to enhance the detection sensitivity of a biosensor for membrane protein analysis of small extracellular vesicles (sEVs). By modulating the zeta potential of the sensor surface, the method showed feasibility in monitoring the expression of CD9, EGFR, and PD-L1 on the sEV surface. The results suggest a promising prospect for clinical application.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Biophysics
Sara Cavallaro, Petra Haag, Siddharth S. Sahu, Lorenca Berisha, Vitaliy O. Kaminskyy, Simon Ekman, Rolf Lewensohn, Jan Linnros, Kristina Viktorsson, Apurba Dev
Summary: Liquid biopsies based on extracellular vesicles (EVs) show promise for tumor treatment monitoring, with a multiplexed electrokinetic sensor capable of profiling surface protein markers in small EVs (sEVs) from non-small-cell lung cancers (NSCLC). The method detects differences in streaming current generated by EV binding to functionalized microcapillaries, allowing for simultaneous detection of multiple surface markers. Analysis of EVs isolated from the pleural effusion fluids of NSCLC patients reveals potential for monitoring treatment responses and identifying distinct interpatient differences in marker expression levels.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Sara Cavallaro, Petra Haag, Kristina Viktorsson, Anatol Krozer, Kristina Fogel, Rolf Lewensohn, Jan Linnros, Apurba Dev
Summary: The study presents a direct visual approach using scanning electron microscopy (SEM) for accurate morphological and size-based profiling of extracellular vesicles (EVs). This method showed a better capacity for analyzing smaller vesicles and a higher EV count compared to nanoparticle tracking analysis (NTA). The research also demonstrated the possibility of identifying non-EV particles based on size and morphological features.
NANOSCALE ADVANCES
(2021)
