Article
Multidisciplinary Sciences
Yooji Hwang, Young Hyun Hwang, Kwang Wook Choi, Seungwon Lee, Soojin Kim, Soo Jong Park, Byeong-Kwon Ju
Summary: A new type of flexible and transparent capacitive photodetector was fabricated in this study to address the limitations of conventional photodetectors, with graphene electrodes introduced for excellent overall chemical, thermal, and mechanical durability. Compared to photodetectors with pristine Ag nanowire electrodes, hybrid AgNW/graphene electrode-based photodetectors showed 20% higher photosensitivity, along with low sheet resistance and relatively high transmittance.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Seongchan Kim, Sae Byeok Jo, Jihyun Kim, Dongjoon Rhee, Yoon Young Choi, Do Hwan Kim, Joohoon Kang, Jeong Ho Cho
Summary: A highly retentive and synaptic-functional transistor memory device architecture based on remote doping of graphene via MXene nano-floating-gates is presented. The introduction of core/shell-like MXene induces a cooperative evolution of the hysteresis loop, resulting in a deterministic remote doping of the graphene layer. The device exhibits a highly retentive memory behavior and can emulate synaptic functions on a flexible substrate.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Alexander Yu Gerasimenko, Artem Kuksin, Yury P. Shaman, Evgeny P. Kitsyuk, Yulia O. Fedorova, Denis T. Murashko, Artemiy A. Shamanaev, Elena M. Eganova, Artem Sysa, Mikhail S. Savelyev, Dmitry Telyshev, Alexander A. Pavlov, Olga E. Glukhova
Summary: This study proposes a technology for the formation and bonding of hybrid carbon nanostructures with a substrate using laser radiation. It reveals the mechanism of field emission centers formation and determines the mechanical and emission characteristics of the hybrid nanostructures. The developed technology shows potential for creating high-performance and stable field emission cathodes, as well as other applications requiring nanomaterials coating with good adhesion, strength, and electrical conductivity.
Article
Physics, Applied
Alex E. Kaloyeros, Spyros Gallis
Summary: Semiconductor nanowires have great potential in controlling light-matter interactions. In this study, the polarization dependence of photoluminescence (PL) properties from silicon carbide nanowire (NW) arrays doped with oxygen and erbium ions was investigated. The anisotropic behavior of visible NW PL for different polarizations was observed and found consistent with simulations and the classical dielectric contrast model. The effect of this anisotropy on carrier dynamics and erbium-induced 1540 nm emission was also explored, demonstrating the potential for applications in chip-scale photonics and quantum photonics.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Bilal Kousar, Damon J. Carrad, Lukas Stampfer, Peter Krogstrup, Jesper Nygard, Thomas S. Jespersen
Summary: In this study, the performance of devices consisting of InAs nanowires in electrical contact with MoRe superconducting alloys was investigated. The MoRe thin films exhibited high transition temperatures and critical magnetic fields, and the devices maintained superconductivity at temperatures up to around 10 K. The MoRe-based Josephson devices showed supercurrents and multiple Andreev reflections. Additionally, the induced superconducting gap was found to be lower than expected and exhibited gap softening at finite magnetic fields.
Article
Materials Science, Multidisciplinary
Rajib Kar, Shreya Ghatak Sarkar, Love Mishra, Rashmi Tripathi, D. C. Kar, R. O. Dusane, D. S. Patil, Namita Maiti
Summary: Graphene nanowalls (GNWs), also called carbon nanowalls (CNWs) and GNWs-carbon nanofibers (CNFs) hybrid nanostructures, are grown on metallic wires using a two-step microwave plasma enhanced chemical vapour deposition (MW-PECVD) process. The combination of Raman and transmission electron microscopy studies revealed the presence of herringbone CNFs in the hybrid nanostructures. A new approach for field emission (FE) analysis is proposed, combining FN equation with an "orthodoxy test", which showed that the hybrid nanostructures exhibited higher current and more repeatable field emission characteristics over 4 cycles of operation. Post FE investigations indicated that pristine GNWs underwent deformities and structural changes, while the hybrid structures remained almost unaffected. These findings highlight the potential of a novel synthesis mechanism for growing GNW based hybrid nanostructures for various applications such as X-ray sources involving field emission.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Han-Wen Zhang, Yan-Gang Bi, Dong-Ming Shan, Zhi-Yu Chen, Yi-Fan Wang, Hong-Bo Sun, Jing Feng
Summary: Flexible perovskite solar cells (FPSCs) have attracted attention for their potential applications in next generation electronics, but the current transparent conductive electrodes (TCEs) hinder their flexible performance. In this study, a hybrid electrode (PUA/AgNWs/PH1000) consisting of a thin layer of silver nanowires (AgNWs) on a flexible substrate (PUA) modified with a conductive layer (PH1000) was proposed. This electrode showed high optical transmittance, electrical conductivity, and mechanical flexibility. When used in FPSCs, the ITO-free devices with the hybrid electrode exhibited desired flexibility and mechanical stability, retaining 77.4% of their initial power conversion efficiency after 10,000 bending cycles with a bending radius of 5 mm.
Article
Chemistry, Multidisciplinary
Minghui Duan, Yi Ren, Xuyang Sun, Xiyu Zhu, Xuelin Wang, Lei Sheng, Jing Liu
Summary: A fibrous supercapacitor based on EGaIn is designed and demonstrated with flexible and stretchable properties, showing potential in the field of flexible electronics and wearable devices.
Article
Nanoscience & Nanotechnology
Yuzhou Wang, Yan Liu, Tao Wang, Shuhui Liu, Zeng Chen, Shaobo Duan
Summary: This study presents a highly transparent and conductive hybrid electrode for flexible optoelectronic devices, which is fabricated by a simple spray method. The hybrid electrode exhibits excellent performance, including high transmittance and low sheet resistance.
Article
Chemistry, Physical
Anna S. Miroshnichenko, Konstantin Deriabin, Maria Baeva, Fedor M. Kochetkov, Vladimir Neplokh, Vladimir V. Fedorov, Alexey M. Mozharov, Olga Yu Koval, Dmitry Krasnikov, Vlad A. Sharov, Nikita A. Filatov, Dmitry S. Gets, Albert G. Nasibulin, Sergey Makarov, Ivan S. Mukhin, Vadim Yu Kukushkin, Regina M. Islamova
Summary: The combination of transparent and durable silicone rubbers with semiconductor materials has enabled the design of highly flexible LEDs. By developing electrodes based on composite materials and nanowires, a novel platform for fabrication of flexible optoelectronic devices has been proposed.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Harishankar Balakrishnan, Ruben Millan-Solsona, Marti Checa, Rene Fabregas, Laura Fumagalli, Gabriel Gomila
Summary: This study demonstrates that Scanning Dielectric Microscopy (SDM) can map the depth distribution of metallic nanowires within polymer nanocomposite materials in a non-destructive way. The researchers were able to determine the spatial distribution of silver nanowires in gelatin films under different ambient conditions. These findings suggest that SDM can be a valuable subsurface characterization technique for optimizing nanowire-based nanocomposite materials for various applications.
Article
Chemistry, Multidisciplinary
Zongqi Bai, Yang Xiao, Qing Luo, Miaomiao Li, Gang Peng, Zhihong Zhu, Fang Luo, Mengjian Zhu, Shiqiao Qin, Kostya Novoselov
Summary: The emergence of two-dimensional materials has led to important applications in electronic and optoelectronic devices. However, there are limitations such as low ON/OFF ratio and Schottky barrier formation. In this study, highly tunable field-effect tunneling transistors based on vertical graphene-WS2-graphene heterostructures were demonstrated, overcoming these limitations and achieving low off-state current, high ON/OFF ratio, and controllable carrier transport polarity.
Article
Chemistry, Analytical
Hao Wang, Zifen Zhao, Panpan Liu, Xiaogang Guo
Summary: This paper reviews the recent progress and applications of laser-induced graphene (LIG) in various fields such as mechanical sensors, temperature and humidity sensors, and electrochemical sensors. The advantages of LIG in flexible design, excellent electrical conductivity, and diverse choice of substrates are highlighted, and the remaining challenges and opportunities of LIG are discussed.
Article
Multidisciplinary Sciences
Qing Wei, Ling Wu, Meiwen Zhu, Zhipeng Wang, Zheng-Hong Huang, Ming-Xi Wang
Summary: Constructing high-performance enzyme-free biosensors for glucose detection is crucial for early diagnosis of diabetes. In this study, copper oxide nanoparticles (CuO@Cu2O NPs) were immobilized in porous nitrogen-doped reduced graphene oxide (PNrGO) to create a CuO@Cu2O/PNrGO/GCE hybrid electrode for sensitive glucose detection. The hybrid electrode demonstrated excellent glucose sensing performance, surpassing that of the pristine CuO@Cu2O electrode, due to the synergistic effects between the numerous high activation sites of CuO@Cu2O NPs and the unique properties of PNrGO, such as excellent conductivity and large surface area with accessible pores. The enzyme-free glucose biosensor exhibited a significant glucose sensitivity of 2,906.07 mA mM(-1) cm (-2), an ultralow limit of detection of 0.13 mM, and a wide linear detection range of 3 mu M-6.772 mM. Additionally, the glucose detection method displayed outstanding reproducibility, favorable long-term stability, and excellent selectivity. Importantly, this study provides promising results for the continuous improvement of non-enzyme sensing applications.
Article
Chemistry, Physical
Min Li, Bilin Xu, Linjuan Zheng, Jialiang Zhou, Zhengxin Luo, Wanfei Li, Wujun Ma, Qinghui Mao, Hengxue Xiang, Meifang Zhu
Summary: In this study, a PANI@CNT/PRGO hybrid fiber was designed and fabricated, enabling rapid ion diffusion, fast electron transport, and sufficient utilization of active sites. The strong interfacial interaction between PANI and CNT/PRGO fiber resulted in excellent deformation and cycling stability, while achieving a high volumetric capacitance of 50.2 F cm-3 and outstanding energy density of 6.97 mWh cm-3.
Article
Nanoscience & Nanotechnology
Hee-Book Lee, Jeong-In Kang, Woo Jae Chung, Do Hoon Lee, Byung Yang Lee, Seung-Wuk Lee, So Young Yoo
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Nanoscience & Nanotechnology
Wonbin Song, Jong-Kwon Lee, Mi Sic Gone, Kwang Heo, Woo-Jae Chung, Byung Yang Lee
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Nanoscience & Nanotechnology
Viet Anh Pham Ba, Yoo Min Han, Youngtak Cho, Taewan Kim, Byung Yang Lee, Joo Sung Kim, Seunghun Hong
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Chemistry, Analytical
Minjun Park, Hyun Soo Kim, Taewan Kim, Junhyup Kim, Sungchul Seo, Byung Yang Lee
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Materials Science, Multidisciplinary
Yeon Beom Jeong, Sung Hwan Hong, Jeong Tae Kim, Hae Jin Park, Young Seok Kim, Hoo Dam Lee, Jong Kook Lee, Sang Chul Mun, Yun Jung Hwang, Kwang Heo, Ki Buem Kim
METALS AND MATERIALS INTERNATIONAL
(2019)
Article
Chemistry, Analytical
Mi Sic Gong, Gyuyeob Oh, Jinhyo Chung, Hyung-Seok Jang, Byung Yang Lee, Woo-Jae Chung
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
Article
Chemistry, Physical
Kwang Heo, Hyo-Eon Jin, Han Kim, Ju Hun Lee, Eddie Wang, Seung-Wuk Lee
Article
Chemistry, Physical
In Woo Park, Jinhyeok Choi, Kyu Young Kim, Junseok Jeong, Dham Gwak, Yonghun Lee, Yong Hoe Ahn, Young Jin Choi, Young Joon Hong, Woo-Jae Chung, Minbaek Lee, Kwang Heo
Article
Nanoscience & Nanotechnology
Sang Hyun Yoon, Dham Gwak, Hong Hee Kim, Hwi Je Woo, Jinhee Cho, Jin Woo Choi, Won Kook Choi, Young Jae Song, Chang-Lyoul Lee, Jongnam Park, Kwang Heo, Young Jin Choi
Article
Materials Science, Multidisciplinary
Hyun Soo Kim, Jongyeop An, Byung Yang Lee
ADVANCED MATERIALS TECHNOLOGIES
(2019)
Article
Chemistry, Analytical
Joung In Lee, Seok Cheon Jang, Jinhyo Chung, Woong-Ku Choi, Caleb Hong, Geum Ran Ahn, Seong Hwan Kim, Byung Yang Lee, Woo-Jae Chung
Summary: The study presents a simple and rapid colorimetric strategy for detecting Aspergillus niger based on interactions between fungal spores and gold nanoparticles modified with a specific binding peptide. This approach showed high sensitivity and rapid detection time, making it suitable for the detection of large microorganisms using the specificity of ligands and the optical properties of gold nanoparticles.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Han Kim, Ju-Hyuck Lee, Ju Hun Lee, Byung Yang Lee, Byoung Duk Lee, Kento Okada, Seungwook Ji, Jihwan Yoon, Jong Hyuk Lee, Seung-Wuk Lee
Summary: By genetically engineering charged structures of M13 bacteriophage, it was found that more negatively charged phages can generate higher triboelectric potentials and diffuse electric charges faster. Computational results showed that glutamate-engineered phages lower the LUMO energy level, enabling easier acceptance of electrons from other materials upon contact.
Article
Chemistry, Multidisciplinary
Hyungho Kwon, Dong Jin Han, Byung Yang Lee
Article
Chemistry, Physical
Ye Rim Lee, Jongyeop An, Hyun Soo Kim, In Woo Park, Kwang Heo, Hyungwoo Lee, Byung Yang Lee
Article
Engineering, Manufacturing
Gyuyeol Park, Hyun Soo Kim, Byung Yang Lee
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2019)