Review
Chemistry, Multidisciplinary
Elena Gorenskaia, Kelly L. Turner, Santiago Martin, Pilar Cea, Paul J. Low
Summary: This article discusses the challenges in the field of molecular junctions and provides an overview of methods used to address these issues.
Article
Chemistry, Multidisciplinary
Hongye Yuan, Kerui Li, Dongchen Shi, Hao Yang, Xin Yu, Weidong Fan, Pio John S. Buenconsejo, Dan Zhao
Summary: This study reports the facile fabrication of ultrathin (down to 20 nm) NUS-8 membranes in large-area (>200 cm(2)) with great homogeneity and texture along (00l) direction. The NUS-8 membranes show excellent rejections (>98%) towards various metal ions and dyes in aqueous separation due to the well-aligned structures. The study opens up novel perspectives for preparing ultrathin and large-area MOF membranes using the solution processability of MOFs.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Karishma Tiwari, Solagna Modak, Pulak Sarkar, Santanu Ray, Vasista Adupa, K. Anki Reddy, Sumit Kumar Pramanik, Amitava Das, Santanu Karan
Summary: This article reports a method for the room temperature synthesis of ultrathin polyimine nanofilms using transition metal ion catalysts. The membranes exhibit high water permeance, high rejection for certain molecules, and low rejection for others, making them efficient for molecular separation.
Article
Chemistry, Multidisciplinary
Caijiao Yu, Xixi Cen, Zhengqing Zhang, Yuxiu Sun, Wenjuan Xue, Zhihua Qiao, Michael D. Guiver, Chongli Zhong
Summary: In this study, a new strategy of step-nucleation in situ self-repair was proposed to prepare large-area ultrathin and rollable MOF membranes on a flexible polymer membrane support. This strategy enables the practical implementation of large-area MOF membranes and has potential applications in gas separation.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
I. Hong Ho, Ching-Wen Chang, Yen-Lin Chen, Wan-Yu Chang, Ting-Jui Kuo, Yu-Jung Lu, Shangjr Gwo, Hyeyoung Ahn
Summary: This study successfully grows ultrathin TiN films with excellent surface morphology and high optical transparency using nitrogen plasma-assisted molecular-beam epitaxy (MBE) method. The films exhibit good dielectric properties and electrical conductivity, making them suitable for robust, low cost, and large-area transparent conductive electrodes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
S-J Wang, M. Sawatzki, H. Kleemann, I Lashkov, D. Wolf, A. Lubk, F. Talnack, S. Mannsfeld, Y. Krupskaya, B. Buechner, K. Leo
Summary: Rubrene single crystal domains with hundreds of micrometers size covering different substrates are achieved by thermal annealing and the assistance of a thin glassy underlayer, enabling high-performance rubrene crystalline transistors. The contact resistance of the transistors is significantly reduced through doping techniques, paving the way for novel high-performance organic electronics using crystalline active materials.
MATERIALS TODAY PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Vidur Raj, Dipankar Chugh, Lachlan E. Black, M. M. Shehata, Li Li, Felipe Kremer, Daniel H. Macdonald, Hark Hoe Tan, Chennupati Jagadish
Summary: Research has shown that wafer-scale, few monolayers thick hBN as a passivation layer can significantly improve solar cell performance, with a relatively low interface defect density and potential for high-quality passivation. hBN-based passivation layers are especially useful in cases where the growth of lattice-matched passivation layers is complicated.
NPJ 2D MATERIALS AND APPLICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Taehoon Lee, Jin-Oh Kim, Chungseong Park, Hanul Kim, Min Kim, Hyunmin Park, Ikjin Kim, Jaehyun Ko, Kyusoon Pak, Siyoung Q. Choi, Il-Doo Kim, Steve Park
Summary: This article introduces a new technique called microfluidic-assisted solution shearing combined with post-synthetic rapid crystallization (MASS-PRC) process to fabricate high-quality, flexible, and transparent thin-film of Ni-3(hexaiminotriphenylene)(2). The process allows for large-area production with thickness control down to tens of nanometers, resulting in a film with high transparency and conductivity uniformity. The flexible thin-film demonstrates excellent transparency for Ni-3(HITP)(2) and the highest performance among c-MOFs-based H2S sensors, making it suitable for wearable gas-sensing applications.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Carlo Mennucci, Debasree Chowdhury, Giacomo Manzato, Matteo Barelli, Roberto Chittofrati, Christian Martella, Francesco Buatier de Mongeot
Summary: Multifunctional flexible Au electrodes based on one-dimensional arrays of plasmonic gratings are fabricated over large areas using optimized laser interference lithography, achieving strong and dichroic plasmonic response that can be tuned across visible to near-infrared spectral range. By stacking a second nanostripe separated by a nanometer scale dielectric gap, near-field coupled Au/SiO2/Au dimers are formed, featuring resonance redshift towards NIR and strong local field-enhancements. The ability to combine excellent transport properties and optical transparency on the same plasmonic metasurface template is appealing for applications requiring low-energy photon management.
Article
Nanoscience & Nanotechnology
Bhagwati Prasad, Vishal Thakare, Alan Kalitsov, Zimeng Zhang, Bruce Terris, Ramamoorthy Ramesh
Summary: Ferroelectric tunnel junctions (FTJs) based on Hafnia with Hf0.5Zr0.5O2 (HZO) barrier have shown great promise for non-volatile memory applications. By stabilizing the rhombohedral polar phase of HZO through a large compressive strain, robust ferroelectricity was achieved with approximately 1 nm thick films grown epitaxially on a SrTiO3 (001) substrate, leading to improved signal-to-noise ratio during read operations.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Maria F. Pantano, Christos Pavlou, Maria Giovanna Pastore Carbone, Costas Galiotis, Nicola M. Pugno, Giorgio Speranza
Summary: In this study, ultrathin PMMA films were evaluated for their mechanical behavior using a homemade nanomechanical device, showing a surprisingly high strain at failure and development of crazes during tensile loading, but without premature fracture. This work may pave the way for the development of glassy thermoplastic films with high ductility at ambient temperatures.
Review
Nanoscience & Nanotechnology
Xiaoping Chen, Christian A. Nijhuis
Summary: This review summarizes the recent progress on the measurements and understanding of the dielectric behavior of molecular systems, introduces the concepts of impedance spectroscopy, and provides insights into factors determining the dielectric constant of monolayers. The review also discusses the role of defects and factors contributing to molecule-electrode contact resistance, ending with an outlook on interesting future directions.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Youxing Liu, Yanan Wei, Minghui Liu, Yichao Bai, Xinyu Wang, Shengcong Shang, Jianyi Chen, Yunqi Liu
Summary: A novel electrochemical synthesis method was proposed for the preparation of large-area Cu-3(HHTP)(2) MOF film, which exhibited high electrical conductivity and crystalline quality. The method was also applied to synthesize other MOF films on Cu foil, demonstrating its universality and potential for industrial-scale production of 2D MOF films.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Abhishake Goyal, Dongze Wang, Jun Gao
Summary: This study demonstrates planar polymer light-emitting electrochemical cells (LECs) with concentric circle electrodes. By varying the inner electrode radius from 1 to 3 mm with a fixed outer electrode radius of 6.8 mm, all cells can be activated at 360 K with a 40 V bias. The large electrode gap size allows for time-lapsed imaging of the in situ electrochemical p- and n-doping processes, and the concentric circular electrode configuration offers a cross sectional view of an LEC-based light-emitting fiber. Furthermore, the sensitivity of junction position to relative electrode radius indicates the strong coupling of p- and n-doping reactions.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Nitu Syed, Alastair Stacey, Ali Zavabeti, Chung Kim Nguyen, Benedikt Haas, Christoph T. Koch, Daniel L. Creedon, Enrico Della Gaspera, Philipp Reineck, Azmira Jannat, Matthias Wurdack, Sarah E. Bamford, Paul J. Pigram, Sherif Abdulkader Tawfik, Salvy P. Russo, Billy J. Murdoch, Kourosh Kalantar-Zadeh, Chris F. McConville, Torben Daeneke
Summary: In this study, ultrathin indium nitride nanosheets were synthesized using a liquid metal-based printing method and a microwave plasma-enhanced nitridation reaction. The nanosheets exhibited high carrier mobilities and quantized states, making them promising for applications in optoelectronic devices and 2D heterostructures.
Article
Nanoscience & Nanotechnology
Quyen Van Nguyen, Ushula Tefashe, Pascal Martin, Maria Luisa Della Rocca, Frederic Lafolet, Philippe Lafarge, Richard L. McCreery, Jean-Christophe Lacroix
ADVANCED ELECTRONIC MATERIALS
(2020)
Article
Multidisciplinary Sciences
Romeo Bonnet, Pascal Martin, Stephan Suffit, Philippe Lafarge, Aurelien Lherbier, Jean-Christophe Charlier, Maria Luisa Della Rocca, Clement Barraud
Article
Chemistry, Physical
Sylvain Pitie, Mahamadou Seydou, Yannick J. Dappe, Pascal Martin, Francois Maurel, Jean Christophe Lacroix
Summary: In this study, NEGF and DFT calculations were used to investigate the influence of electrode asymmetry and coupling strength on the transport properties of (1-(2-bisthienyl)benzene) oligomers. Electronic analysis revealed the ionic nature of Ti-C bonds, which resulted in the formation of an interfacial dipole. It was found that the Ti d orbitals strongly coupled with the lowest unoccupied orbital of BTB, enabling charge transfer from Ti to the molecule.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Physics, Applied
Salvatore Timpa, Mehrdad Rahimi, Jacko Rastikian, Stephan Suffit, Francois Mallet, Philippe Lafarge, Clement Barraud, Maria Luisa Della Rocca
Summary: Transition metal dichalcogenides have emerged as a platform for energy conversion solutions at the nanoscale. The electric and thermoelectric properties of devices based on two-dimensional materials are influenced by metal contacts, with different metals leading to varied Seebeck response and electrical conductivity. It is important to engineer metal contacts to optimize the thermoelectric performances of transition metal dichalcogenides based transistors.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Mingyang Liu, Cecile Huez, Quyen Van Nguyen, Sebastien Bellynck, Philippe Decorse, Pascal Martin, Jean Christophe Lacroix
Summary: This work demonstrates an electrochemical approach for modifying carbon and gold electrodes with two nanometer-thick molecular layers, including an electron donor and an electron acceptor. The study shows the possibility of creating strongly coupled bilayer systems with minimal interpenetration for electron transfer and rectification. The electrochemical response and electron transport in solid-state molecular junctions depend on the deposition order of the two layers.
ACS APPLIED NANO MATERIALS
(2021)
Article
Physics, Multidisciplinary
Cheolhee Han, Z. Iftikhar, Yaakov Kleeorin, A. Anthore, F. Pierre, Yigal Meir, Andrew K. Mitchell, Eran Sela
Summary: Fractional entropy, such as Majorana zero modes or non-Abelian anyons, is a signature of nonlocal degrees of freedom. Although direct experimental measurements are challenging, indirect measurement through charge measurements using Maxwell relations is possible. The study focuses on multichannel charge-Kondo systems and suggests that Majorana and Fibonacci anyon quasiparticles are well developed and experimentally measurable in existing devices.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
Pedro M. T. Vianez, Yiqing Jin, Maria Moreno, Ankita S. Anirban, Anne Anthore, Wooi Kiat Tan, Jonathan P. Griffiths, Ian Farrer, David A. Ritchie, Andrew J. Schofield, Oleksandr Tsyplyatyev, Christopher J. B. Ford
Summary: This study investigates many-body modes in gated one-dimensional wires and observes two parabolic dispersions associated with spin and charge excitations at high energies. It also discovers two additional one-dimensional replica modes that strengthen with decreasing wire length.
Article
Chemistry, Physical
Quyen Van Nguyen, Pascal Martin, Jean Christophe Lacroix
Summary: The effect of active molecule density in molecular junctions was studied using a host/guest strategy. The number of active molecules was found to directly influence the conductance of the junctions.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Pauline J. Kolbeck, Dihia Benaoudia, Leia Chazot-Franguiadakis, Gwendoline Delecourt, Jeirome Mathei, Sha Li, Romeo Bonnet, Pascal Martin, Jan Lipfert, Anna Salvetti, Mordjane Boukhet, Veironique Bennevault, Jean-Christophe Lacroix, Philippe Guegan, Fabien Montel
Summary: Researchers have developed a selective and switchable nanopore by grafting polymers within artificial nanopores to control the transport of biomolecules. Using fluorescence microscopy with a zero-mode waveguide set up, they measured transport at the scale of individual biomolecules. They demonstrated tight control over DNA and viral capsid transport with a sharp transition based on temperature, and proposed a simple physical model to predict key features of this transition. This approach offers the potential for controllable and responsive nanopores in various applications.
Article
Physics, Applied
M. Rahimi, K. Sobnath, F. Mallet, P. Lafarge, C. Barraud, W. Daney de Marcillac, D. Fournier, M. L. Della Rocca
Summary: In this study, we performed a comprehensive thermoelectric characterization of thin flakes (5-6 nm) of tungsten diselenide (WSe2) and multilayer graphene (MLGN) deposited on hexagonal boron nitride (h-BN) using electric and thermoelectric measurements coupled with modulated thermoreflectance (MTR). We obtained the anisotropic thermal conductivities of each device's layer by conducting MTR scans on each individual flake. Our results demonstrate the possibility of performing selective nondestructive measurements of the thermal conductivity of 2D materials embedded in device configurations.
PHYSICAL REVIEW APPLIED
(2023)
Article
Nanoscience & Nanotechnology
Dihia Benaoudia, Van-Quynh Nguyen, Veironique Bennevault, Pascal Martin, Fabien Montel, Philippe Guegan, Jean-Christophe Lacroix
Summary: Poly(2-alkyl-2-oxazoline)s (POx) with an aminophenyl end group were synthesized and characterized by various techniques. The electroreduction of aniline terminated poly(2-methyl-2-oxazoline) (PMeOx) and poly(2-n-propyl-2-oxazoline) (PnPrOx) was investigated on different substrates, resulting in the formation of ultrathin polymer layers. The wettability of the modified surfaces varied depending on the chemical nature of the POx.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Pascal Martin, Bruno Dlubak, Richard Mattana, Pierre Seneor, Marie-Blandine Martin, Theo Henner, Florian Godel, Anke Sander, Sophie Collin, Linsai Chen, Stephan Suffit, Francois Mallet, Philippe Lafarge, Maria Luisa Della Rocca, Andrea Droghetti, Clement Barraud
Summary: A bias-controlled spin-filtering mechanism is presented in spin-valves with a hybrid organic chain/graphene interface. The use of a protective graphene layer preserves the metallic character of the ferromagnetic surface and its capability to deliver spin polarized currents. Experimental observations and first-principles calculations reveal the bias-dependent switch of the spin signal, which is attributed to the spin-dependent hybridization of electronic states at different interfaces.
Review
Quantum Science & Technology
Pascal Martin, Bruno Dlubak, Pierre Seneor, Richard Mattana, Marie-Blandine Martin, Philippe Lafarge, Francois Mallet, Maria Luisa Della Rocca, Simon M-M Dubois, Jean-Christophe Charlier, Clement Barraud
Summary: Spintronics is a quantum technology that incorporates the spin quantum degree into conventional CMOS electronics. Since the discovery of giant magneto-resistance in 1988, spintronics has been widely used in everyday applications, and also shows promising post-CMOS prospects. Carbon nanostructures, such as molecules, graphene, and carbon nanotubes, are among the most sought-after materials in this field.
ADVANCED QUANTUM TECHNOLOGIES
(2022)
Article
Physics, Multidisciplinary
H. Duprez, F. Pierre, E. Sivre, A. Aassime, F. D. Parmentier, A. Cavanna, A. Ouerghi, U. Gennser, I Safi, C. Mora, A. Anthore
Summary: The study investigates the dynamical Coulomb blockade suppression of electrical conductance across an electronic quantum channel subject to a temperature difference. By analyzing experimental data and theoretical models, researchers were able to explain the variations in conductance under different temperature conditions effectively.
PHYSICAL REVIEW RESEARCH
(2021)