Article
Chemistry, Physical
Yi Zhang, Dezhi Feng, Yi Xu, Ziwei Yin, Wei Dou, Um E. Habiba, Changyi Pan, Zongkun Zhang, Hao Mou, Huiyong Deng, Xianqiang Mi, Ning Dai
Summary: Molybdenum disulfide (MoS2) field-effect transistor (FET) biosensors are highly sensitive and label-free, with ultrahigh sensitivity to target proteins and a wide linear detection range after functionalization with DNA tetrahedron and biotin-streptavidin.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Junqing Wei, Zhihan Zhao, Fengting Luo, Kuibo Lan, Ruibing Chen, Guoxuan Qin
Summary: In this study, a functionalized MoS2-field effect transistor (FET) was developed for sensitive and quantitative detection of SARS-CoV-2 antibodies. This method showed high specificity and has potential clinical applications for vaccine development and efficacy evaluation.
Article
Chemistry, Multidisciplinary
Robin T. K. Schock, Jonathan Neuwald, Wolfgang Moeckel, Matthias Kronseder, Luka Pirker, Maja Remskar, Andreas K. K. Huettel
Summary: It is demonstrated that adding a bismuth semimetal layer between the contact metal and the nanomaterial significantly improves the properties of the contacts, leading to better stability and less trap states.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Analytical
Samira Mansouri Majd, Fatemeh Mirzapour, Mojtaba Shamsipur, Iraj Manouchehri, Elaheh Babaee, Afshin Pashabadi, Rostam Moradian
Summary: This paper introduces a new method for early detection of breast cancer, using robust assay platforms and appropriate biomarkers. The method utilizes an electrolyte-gated MoS2 FET modified with aptamer and molecularly imprinted polymer hybrid as a synthetic receptor film. The device shows high selectivity and sensitivity for the detection of BRCA1 gene biomarker, with linear response over a concentration range of 10 aM to 1 nM of BRCA1 ssDNA.
Article
Chemistry, Physical
Yoonsok Kim, Taeyoung Kim, Eun Kyu Kim
Summary: Molybdenum disulfide (MoS2) is a promising semiconductor material, but its electrical performances in transistor structures are suppressed by interface trap density. Using MoS2 heterojunctions, high performance characteristics can be achieved, but varying the channel length leads to degradation of electrical performance.
Article
Chemistry, Physical
Hedyeh Rahmani, Samira Mansouri Majd, Abdollah Salimi
Summary: Since the evaluation of CA 19-9 antigen level in human serum is important for the early diagnosis of various diseases, researchers developed a simple, rapid, and sensitive immunosensor using an electrolyte-gated field-effect transistor with MoS2 nanosheets. The immunosensor showed high selectivity and accurately detected trace amounts of the CA 19-9 antigen in real human serum samples. Its properties enable the early diagnosis of pancreatic cancer, increasing the chance of successful treatment.
Article
Chemistry, Multidisciplinary
Hyunmin Cho, Donghee Kang, Yangjin Lee, Heesun Bae, Sungjae Hong, Yongjae Cho, Kwanpyo Kim, Yeonjin Yi, Ji Hoon Park, Seongil Im
Summary: In addressing the high contact resistance in 2D devices, the use of thermal-evaporated ultrathin LiF between channel and source/drain metal has shown promising results in reducing RC values in MoS2 FETs. By utilizing the 4-bar FET method, lower RC values can be achieved, while transparent conducting oxide contact enables transparent MoS2 FETs to be realized.
Article
Chemistry, Multidisciplinary
Bolun Wang, Xuewen Wang, Enze Wang, Chenyu Li, Ruixuan Peng, Yonghuang Wu, Zeqin Xin, Yufei Sun, Jing Guo, Shoushan Fan, Chen Wang, Jianshi Tang, Kai Liu
Summary: This study presents a synaptic transistor that can operate at high temperatures, using MoS2 and Na+-diffused SiO2 as the main materials, achieving high on/off ratio and recognition accuracy.
Article
Computer Science, Hardware & Architecture
Asma Wasfi, Falah Awwad, Mohamed Atef
Summary: In this study, a monolayer molybdenum disulfide (MoS2) sheet connected to a pair of gold electrodes with a nanopore at its center is used for selective, quick, and sensitive DNA base identification. The performance of the MoS2 sheet is improved by placing a gate terminal underneath. The electronic transport characteristics of the MoS2 sheet and MoS2 field-effect transistor (FET) are studied for different DNA nucleobases.
ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING
(2023)
Article
Chemistry, Multidisciplinary
Inho Jeong, Kyungjune Cho, Seobin Yun, Jiwon Shin, Jaeyoung Kim, Gyu Tae Kim, Takhee Lee, Seungjun Chung
Summary: This study demonstrates the controllable surface charge transfer doping (SCTD) of molybdenum disulfide (MoS2) field-effect transistors using inkjet-printed benzyl viologen (BV). The BV-doped MoS2 FETs exhibit elaborately tailored electrical performance by adjusting the concentration and areal coverage of inkjet-printed BV dopants. The inkjet-printed SCTD method provides a feasible solution for modulating the electrical and optical performances of TMD-based devices.
Article
Chemistry, Multidisciplinary
Kenjiro Hayashi, Masako Kataoka, Hideyuki Jippo, Junichi Yamaguchi, Mari Ohfuchi, Shintaro Sato
Summary: This study investigates the effects of grain boundaries on the sensing properties of polycrystalline layered materials. The results show that while the CVD-grown film has superior electrical properties, the TVS-grown film exhibits higher sensitivity to NO2. Transmission electron microscopy observations reveal the presence of rotationally oriented grains and mirror twin grain boundaries in the TVS-grown film.
Article
Chemistry, Physical
Yuanlyu Mao, Yuqiang Fang, Kaidi Yuan, Fuqiang Huang
Summary: In this study, V-doped MoS2 material was successfully synthesized and the influence of V doping on its thermoelectric properties was investigated. V doping significantly enhanced the electrical conductivity and thermoelectric performance of MoS2, and introduced lattice defects and grain refinement effects. In addition, VxMo1-xS2 showed obvious anisotropy in transport properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Jinglei Han, Fa Cao, Xiaohong Ji
Summary: This study successfully synthesized bilayer MoS2 with various twist angles using CVD method and demonstrated the formation mechanism with MD simulations. Raman and PL analysis confirmed the significant influence of twist angle on the optical properties of twisted bilayer MoS2.
Article
Chemistry, Physical
Lu Li, Yalin Peng, Jinpeng Tian, Fanfan Wu, Xiang Guo, Na Li, Wei Yang, Dongxia Shi, Luojun Du, Guangyu Zhang
Summary: This study demonstrates the batch production of transfer-free MoS2 top-gate devices directly on sapphire growth substrates. By introducing substrate steps, high-quality dielectric layers can be directly deposited onto the grown monolayer MoS2, enabling the high-quality fabrication of devices.
Article
Chemistry, Multidisciplinary
A-Rang Jang
Summary: This study investigates the effect of electrodes on the electrical properties of single-layer MoS2 field-effect transistors (FETs). The contact barrier at the MoS2-graphene interface can be modulated, resulting in enhanced performance compared to FETs with Au/Ti electrodes.
Article
Multidisciplinary Sciences
Enrico Pomarico, Cedric Schmidt, Florian Chays, David Nguyen, Arielle Planchette, Audrey Tissot, Adrien Roux, Stephane Pages, Laura Batti, Christoph Clausen, Theo Lasser, Aleksandra Radenovic, Bruno Sanguinetti, Jerome Extermann
Summary: The extensive use of supervised learning models on compressed datasets has become possible due to the growth of data throughput in optical microscopy. This study quantifies the statistical distortions induced by compression and compares them to the raw predictive uncertainty. The results show that image compression can significantly alter predictions and that higher compression ratios lead to larger distortions.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Zhenyu Wang, Mukesh Tripathi, Zahra Golsanamlou, Poonam Kumari, Giuseppe Lovarelli, Fabrizio Mazziotti, Demetrio Logoteta, Gianluca Fiori, Luca Sementa, Guilherme Migliato Marega, Hyun Goo Ji, Yanfei Zhao, Aleksandra Radenovic, Giuseppe Iannaccone, Alessandro Fortunelli, Andras Kis
Summary: In this study, high-quality NbS2-MoS2 lateral heterostructures were synthesized by one-step metal-organic chemical vapor deposition (MOCVD) with Nb substitutionally doped monolayer MoS2, showing p-type doped behavior. The heterojunction exhibited p-type transfer characteristic with a high on/off current ratio of approximately 10^4, surpassing previous reports. The band structure of the NbS2-MoS2 heterojunction was investigated using density functional theory (DFT) and quantum transport simulations. This research provides a scalable approach to synthesize doped TMDC materials and offers insight into the interface between 2D metals and semiconductors in lateral heterostructures, which is crucial for the development of next-generation nanoelectronics and highly integrated devices.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Andrey Chernev, Yunfei Teng, Mukeshchand Thakur, Victor Boureau, Lucie Navratilova, Nianduo Cai, Tzu-Heng Chen, Liping Wen, Vasily Artemov, Aleksandra Radenovic
Summary: Nature provides a wide range of self-assembled structures, and this study presents a fast, nature-inspired method for growing stalactite nanopores using heterogeneous atomic deposition. The stalactite nanostructures combine the advantages of reduced sensing region typically for 2D material nanopores with the asymmetric geometry of capillaries, resulting in ionic selectivity, stability, and scalability. The proposed growing method provides an adaptable nanopore platform for basic and applied nanofluidic research.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Vasily Artemov, Laura Frank, Roman Doronin, Philipp Staerk, Alexander Schlaich, Anton Andreev, Thomas Leisner, Aleksandra Radenovic, Alexei Kiselev
Summary: The surface charge of an open water surface is determined by electrostatic effects in the contact line vicinity of three phases. The contact potential difference between two aqueous interfaces created by charge redistribution is shown to be pH-dependent. This discovery provides insights into solvation phenomena and interfacial processes in aqueous systems and has implications for various experimental environments.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Nanoscience & Nanotechnology
S. M. Leitao, V. Navikas, H. Miljkovic, B. Drake, S. Marion, G. Pistoletti Blanchet, K. Chen, S. F. Mayer, U. F. Keyser, A. Kuhn, G. E. Fantner, A. Radenovic
Summary: In current nanopore-based label-free single-molecule sensing technologies, stochastic processes make it challenging to control the selection, rate, and velocity of single-molecule translocations. This study proposes a method that uses a glass nanopore mounted on a three-dimensional nanopositioner to spatially select and deterministically translocate molecules tethered on a glass surface. By controlling the distance between the nanopore and glass surface, the region of interest on the molecule can be actively selected and scanned at a controlled number of times and velocity. The method demonstrates versatility in assessing DNA-protein complexes, DNA rulers, and DNA gaps, enabling single-nucleotide gap detection.
NATURE NANOTECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Alexey M. Romshin, Vadim Zeeb, Evgenii Glushkov, Aleksandra Radenovic, Andrey G. Sinogeikin, Igor I. Vlasov
Summary: We present a novel approach to manipulate the temperature of individual living cells and their compartments using a polycrystalline diamond particle containing silicon-vacancy color centers. This particle acts as both a heater and a thermometer, allowing for precise control and measurement of local temperature changes. By heating the vicinity of HeLa cells and isolated mouse hippocampal neurons, we observe alterations in the intracellular distribution of free calcium ions, indicating the importance of temperature in cellular processes.
SCIENTIFIC REPORTS
(2023)
Article
Nanoscience & Nanotechnology
Mukeshchand Thakur, Nianduo Cai, Miao Zhang, Yunfei Teng, Andrey Chernev, Mukesh Tripathi, Yanfei Zhao, Michal Macha, Farida Elharouni, Martina Lihter, Liping Wen, Andras Kis, Aleksandra Radenovic
Summary: Nanopores in 2D membranes, especially in single-layer MoS2, have great potential in various applications. However, the stability of these nanopores remains a challenge. This study identifies chemical oxidation and delamination of monolayers as the main reasons for instability and proposes surface modification and reducing oxygen to improve nanopore stability. Understanding nanopore growth and stability can lead to controlled pore size and shape and enable durable nanopore devices with high signal-to-noise ratio.
NPJ 2D MATERIALS AND APPLICATIONS
(2023)
Article
Biology
Arielle Louise Planchette, Cedric Schmidt, Olivier Burri, Mercedes Gomez de Agueero, Aleksandra Radenovic, Alessio Mylonas, Jerome Extermann
Summary: Optical projection tomography (OPT) enables the observation and understanding of tissue-wide networks in three dimensions. A multi-modal workflow for characterizing the mouse small intestine is presented, demonstrating its applicability for imaging the intestinal immune compartment and mucosal structures.
COMMUNICATIONS BIOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Jakub Sitek, Karolina Czerniak-Losiewicz, Arkadiusz P. Gertych, Malgorzata Giza, Pawel Dabrowski, Maciej Rogala, Konrad Wilczynski, Anna Kaleta, Slawomir Kret, Ben R. Conran, Xiaochen Wang, Clifford McAleese, Michal Macha, Aleksandra Radenovic, Mariusz Zdrojek, Iwona Pasternak, Wlodek Strupinski
Summary: Researchers have achieved the selective fabrication of van der Waals heterostructures (vdWHSs) using chemical vapor deposition by electron-beam irradiation. They have identified two growth modes, positive (P) mode on graphene and tungsten disulfide (WS2) substrates, and negative (N) mode on the graphene substrate. The growth mode can be controlled by limiting the air exposure and the time between irradiation and growth. The selective growth mechanism is explained by the competition of three effects: EB-induced defects, adsorption of carbon species, and electrostatic interaction. This study is a critical step towards industry-scale fabrication of 2D-materials-based devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Svetlana Melnik, Alexander Ryzhov, Alexei Kiselev, Aleksandra Radenovic, Tanja Weil, Keith J. Stevenson, Vasily G. Artemov
Summary: The electrodynamics properties of nanoconfined water have been significantly changed compared to bulk water, providing opportunities for safe electrochemical systems. We present a nanofluidic water-only battery that exploits the unusually high electrolytic properties of pure water under strict confinement. The device, composed of carbon-based nanomaterials, creates interconnected nanochannels filled with water between the separator and electrodes. The efficiency of the battery shows a maximum energy density at 3 nm, challenging the current metal-ion batteries. Our findings establish the electrodynamic fundamentals of nanoconfined water and pave the way for low-cost and inherently safe energy storage solutions needed in the renewable energy sector.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Guilherme Migliato Marega, Zhenyu Wang, Yanfei Zhao, Hyun Goo Ji, Asmund Ottesen, Mukesh Tripathi, Aleksandra Radenovic, Andras Kis
Summary: Memory devices have gained attention again due to the increasing interest in using in-memory computing architectures. Flash memories based on monolayer MoS2 show promise as the ideal elements for this technology, but achieving large-area ultra-fast operation remains a challenge.
IEEE NANOTECHNOLOGY MAGAZINE
(2023)
Meeting Abstract
Biophysics
Jenny Sulzle, Wayne Yang, Yuta Shimoda, Eveline S. Mayner, Michal Macha, Nathan Ronceray, Aleksandra Radenovic, Suliana Manley
BIOPHYSICAL JOURNAL
(2023)
Meeting Abstract
Biophysics
Wayne Yang, Jenny Sulzle, Yuta Shimoda, Eveline Mayner, Michal Macha, Nathan Ronceray, Suliana Manley, Aleksandra Radenovic
BIOPHYSICAL JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Guilherme Migliato Marega, Hyun Goo Ji, Zhenyu Wang, Gabriele Pasquale, Mukesh Tripathi, Aleksandra Radenovic, Andras Kis
Summary: Data-driven algorithms are needed to process the massive amounts of data being produced, but the traditional von Neumann architecture limits processing capabilities, leading to the development of in-memory computing. This research presents an integrated 32x32 vector-matrix multiplier using floating-gate field-effect transistors with monolayer molybdenum disulfide as the channel material. Wafer-scale fabrication achieves high yield and low variability, and statistical analysis reveals the potential for multilevel and analogue storage. Reliable parallel signal processing is also demonstrated. In-memory computing chips for vector-matrix multiplication and signal processing can be fabricated using these transistors.
NATURE ELECTRONICS
(2023)