Article
Chemistry, Analytical
Joevonte Kimbrough, Lauren Williams, Qunying Yuan, Zhigang Xiao
Summary: This study successfully fabricated carbon nanotube field-effect transistors on a wafer scale using dielectrophoresis method, and tested their performance. It was found that 87% of the fabricated CNTFETs were functional, with 30% having an I-DS on/off ratio larger than 20 and 70% having a ratio lower than 20. The research provides an effective method for the wafer-scale fabrication of CNT electronic devices.
Article
Nanoscience & Nanotechnology
Hao Liu, Fengjing Liu, Zhaolou Sun, Xiaoyong Cai, Huijuan Sun, Yuan Kai, Li Chen, Chao Jiang
Summary: In this study, highly ordered semiconducting single-walled carbon nanotubes (sc-SWCNTs) array with high performance field effect transistors (FETs) were obtained through dielectrophoresis, which can be further applied in large-area, low-cost carbon-based integrated circuits.
Article
Chemistry, Physical
Kyung-Tae Kim, Keon Woo Lee, Sanghee Moon, Joon Bee Park, Chan-Yong Park, Seung-Ji Nam, Jaehyun Kim, Myoung-Jae Lee, Jae Sang Heo, Sung Kyu Park
Summary: Research on the surface and interfacial electro-chemical behaviors of s-SWCNTs has led to the development of a cost-effective purification process, HAP, which minimizes polymers bound to s-SWCNT surfaces to improve charge carrier transport. By introducing conformal dielectric configuration for s-SWCNT FETs and optimizing gate-field-induced surface and interfacial behaviors, highly capacitive s-SWCNT FETs with ion-gel dielectrics were achieved, exhibiting a field-effect mobility of approximately 8.19 cm(2)/V.s and on/off current ratio of approximately 10(5) with negligible hysteresis.
Review
Chemistry, Multidisciplinary
Jianping Zou, Qing Zhang
Summary: Single-walled carbon nanotubes (SWCNTs) are considered a promising electronic material for the future of electronics, with sub-10 nm SWCNT-field effect transistors (FETs) outperforming Si-based FETs. Recent advances in SWCNT electronics focus on fundamental electronic structures, carrier transport mechanisms, and metal/SWCNT contact properties, highlighting subthreshold switching properties for low-power device operations. Challenges and prospects for future SWCNT-based electronics include material preparation, device fabrication, and large-scale ICs integration.
Article
Materials Science, Multidisciplinary
Chenwei Fan, Xiaohan Cheng, Lin Xu, Maguang Zhu, Sujuan Ding, Chuanhong Jin, Yunong Xie, Lian-Mao Peng, Zhiyong Zhang
Summary: This study demonstrates a multilayer stackable process for the integration of high-performance carbon nanotube transistors and ICs. The high-quality nanotube layer is prepared through a low-temperature process, resulting in high-performance transistors. The resulting 3D ICs show fast signal propagation and compact size.
Article
Energy & Fuels
Hyun-Woo Kim, Jeong-Un Jin, Dongju Lee, Seo Gyun Kim, Bon-Cheol Ku, Seongwoo Ryu, Nam-Ho You
Summary: In this study, an effective method for controlling the viscosity of liquid crystal SWCNT phases was reported. By functionalizing single-walled carbon nanotubes, the viscosity and phase transformation of the liquid crystal phases could be precisely controlled. The resulting SWCNT fibers exhibited higher mechanical properties and electrical conductivity, as well as flexibility and durability for wearable and flexible electronic electrode devices. Moreover, the SWCNT fibers demonstrated excellent performance as Zn-ion supercapacitors with high capacitance retention after bending tests.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Ya Feng, Yuta Sato, Taiki Inoue, Rong Xiang, Kazu Suenaga, Shigeo Maruyama
Summary: Thermal conductivity of a suspended single-walled carbon nanotube (SWCNT) is significantly enhanced by introducing an axial tensile strain, and the enhancement is positively correlated with the strain magnitude. Furthermore, the reduction of thermal conductivity with temperature is alleviated for the strained nanotube compared to unstrained cases.
Article
Chemistry, Physical
Fatemeh Shoghi, Suraj Mal, Monique Tie, Antonella Badia, Richard Martel
Summary: In this study, a pH responsive optical probe comprised of Single-Walled Carbon Nanotubes (SWCNTs) in contact with a platinum redox couple (Pt-SWCNTs) was developed for accurate monitoring of pH in solutions. The probe demonstrated precise pH measurements across different ionic strengths, showing a strong Raman shift of the G-band as a function of pH. This work introduces an optical pH sensing scheme analogous to conventional pH sensors equipped with a built-in internal reference.
Article
Chemistry, Multidisciplinary
Salome Forel, Leandro Sacco, Alice Castan, Ileana Florea, Costel Sorin Cojocaru
Summary: Single-walled carbon nanotubes (SWCNTs) show promise in gas sensing applications due to their ability to address device miniaturization challenges and reduce power consumption. SWCNT gas sensors typically rely on field-effect transistors (SWCNT-FETs) to detect gas by modifying current flow, but face limitations in measuring their transfer curves due to the small current range. This study proposes an innovative inverter device that simplifies data processing and enables gas detection based on electric potential variation in the volt range, with a proof of concept done using NO2 gas.
NANOSCALE ADVANCES
(2021)
Article
Materials Science, Multidisciplinary
Hu Chen, Jun Chen
Summary: This study reports a self-driven near-infrared photodetector based on carbon nanotubes and graphene, which improves photocurrent and Schottky barrier, achieving high sensitivity photoresponse and fast response time.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Brendan Mirka, Nicole A. Rice, Phillip Williams, Mathieu N. Tousignant, Nicholas T. Boileau, William J. Bodnaryk, Darryl Fong, Alex Adronov, Benoit H. Lessard
Summary: This study demonstrates that excess unbound polymer during semiconductor film fabrication is not necessarily detrimental to device performance, and removal of such polymers may not always be necessary. Simple solvent rinsing can reduce this loss. Additionally, a Machine Learning algorithm can be utilized for analyzing the surface characteristics of SWNT films.
Article
Chemistry, Physical
Wenshan Li, Frank Hennrich, Benjamin S. Flavel, Simone Dehm, Manfred Kappes, Ralph Krupke
Summary: Dielectrophoresis (DEP) describes the motion of suspended objects in an inhomogeneous electric field. Researchers have extensively studied DEP in aqueous and organic solutions, with recent applications focused on polymer-wrapped single-walled carbon nanotubes (SWCNTs) in organic solvents due to the availability of ultra-pure SWCNT content.
Article
Materials Science, Multidisciplinary
Dan Zhao, Rui Liu, Cheng Luo, Yang Guo, Chengyi Hou, Qinghong Zhang, Yaogang Li, Wei Jia, Hongzhi Wang
Summary: The study focuses on the in-situ assembly of carbon nanotubes (CNTs) using macroscopic dielectrophoresis, overcoming the limitation of small size in traditional manipulation methods. Through optimizing voltage and frequency, ordered CNTs chains can be obtained under the action of alternating current dielectrophoresis, which can restore immediately upon powering up after being damaged. Different conductive patterns on non-woven fabric can be achieved by controlling the position of the electrodes in a wet environment.
ADVANCED FIBER MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Abdullah Abdulhameed, Izhal Abdul Halin, Mohd Nazim Mohtar, Mohd Nizar Hamidon
Summary: pH sensors were fabricated using the dielectrophoresis method, showing high sensitivity and fast response time. The sensors were enhanced in stability and repeatability with the assistance of airflow and thermal annealing. The sensors performed well in environments with different pH values, demonstrating reliable long-term performance.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Environmental
Lazaro Adrian Gonzalez-Fernandez, Nahum Andres Medellin-Castillo, Raul Ocampo-Perez, Hector Hernandez-Mendoza, Maria Selene Berber-Mendoza, Cristobal Aldama-Aguilera
Summary: Simple Walled Carbon Nanotubes (SWCNTs) were used as adsorbents to remove triclosan (TCS) from aqueous solution. The maximum adsorption capacity of TCS onto SWCNTs was found to be 30.3 mg g(-1) at a pH value of 7. The adsorption kinetics of TCS on SWCNTs was correctly interpreted by the First Order Kinetic Model and the Diffusional Model.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Electrical & Electronic
Z. Xiao, K. Kisslinger, E. Dimasi, J. Kimbrough
MICROELECTRONIC ENGINEERING
(2018)
Article
Materials Science, Multidisciplinary
Qunying Yuan, Manjula Bomma, Zhigang Xiao
Summary: Phytochelatins can enhance the efficiency of gold nanoparticle synthesis mediated by bacterial soluble intracellular extracts, indicating the potential value of extracellular nanoparticle synthesis platform for large-scale production of high-purity nanoparticles.
Article
Materials Science, Multidisciplinary
Brandon Sueoka, Md Mehedi Hasan Tanim, Lauren Williams, Zhigang Xiao, Ying Zhi Seah, Kuan Yew Cheong, Feng Zhao
Summary: This paper investigates neural facilitation in natural organic honey based synaptic memristor and compares the effects of two different drying conditions for the honey thin film. The results show that the drying process has a significant impact on the performance of the honey memristor, with lower temperature and longer time resulting in better synaptic emulation.
ORGANIC ELECTRONICS
(2022)
Article
Nanoscience & Nanotechnology
Zhigang Xiao, Gregory Doerk, Kim Kisslinger, Abram Jones, Rebhadevi Monikandan
Summary: Nanostructured molybdenum disulfide (MoS2) thin films were grown on a nanohole-patterned silicon substrate using plasma-enhanced atomic layer deposition. The nanoscale holes on the substrate significantly increased the surface area and facilitated the growth of hexagonal-like structures. The MoS2 film exhibited both amorphous and crystalline characteristics, with the latter being induced by high-temperature annealing.
Article
Microbiology
Qunying Yuan, Rong Xiao, Mojetoluwa Afolabi, Manjula Bomma, Zhigang Xiao
Summary: Selenium nanoparticles (SeNPs) synthesized chemically with bovine serum albumin (BSA) as a stabilizer and capping agent showed inhibition on the growth of Listeria monocytogenes and Staphylococcus epidermidis starting at 0.5 μg/mL, but higher concentrations were needed for Staphylococcus aureus, Vibrio alginolyticus, and Salmonella enterica. No inhibition was observed on the growth of the other five test bacteria. These findings suggest that chemically synthesized SeNPs have the potential to be used as food preservatives to reduce bacteria-mediated food spoilage, but factors such as size, shape, synthesis method, and combination with other preservatives should be considered.
Article
Materials Science, Multidisciplinary
Zhigang Xiao, Kim Kisslinger, Rebhadevi Monikandan
Summary: Carbon thin films were successfully grown using PE-ALD method, and it was found that the presence of defective sites on the substrate could facilitate the formation of nanolayered carbon films. This finding could be beneficial for controlled growth of nanolayered carbon films or other two-dimensional nanomaterials with modern nanopatterning techniques.
C-JOURNAL OF CARBON RESEARCH
(2021)
Article
Engineering, Electrical & Electronic
Bruno Galizia, Patrick Fiorenza, Corrado Bongiorno, Bela Pecz, Zsolt Fogarassy, Emanuela Schiliro, Filippo Giannazzo, Fabrizio Roccaforte, Raffaella Lo Nigro
Summary: This study demonstrates the growth of oriented AlN thin films on 4H-SiC substrates using PE-ALD technique, and investigates the impact of NH3 plasma pulsing on the microstructure and orientation degree of the AlN layers. The structural characterization reveals different polymorphic structures depending on the NH3 plasma pulsing time, and electrical nanoscopic characterization shows a correlation between the AlN crystalline phases and the insulating properties.
MICROELECTRONIC ENGINEERING
(2024)
Article
Engineering, Electrical & Electronic
Theo Levert, Alter Zakhtser, Julien Duval, Chloe Raguenez, Stephane Verdier, Delphine Le Cunff, Jean-Herve Tortai, Bernard Pelissier
Summary: In this study, the robustness of optical constants and optical band gap determination of three different materials is compared using a combination of spectroscopic ellipsometry and energy loss signal of X-ray photoelectron spectroscopy. The hybridization of these two techniques provides a new robust method for determining the band gap of the studied materials and other optical properties over a wide energy range.
MICROELECTRONIC ENGINEERING
(2024)
