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Pawar S, Duadi H, Fleger Y, Fixler D. Design and Use of a Gold Nanoparticle-Carbon Dot Hybrid for a FLIM-Based IMPLICATION Nano Logic Gate. ACS Omega 2022; 7:22818-22824. [PMID: 35811911 PMCID: PMC9260748 DOI: 10.1021/acsomega.2c02463] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
The interest in nanomaterials resides in the fact that they can be used to create smaller, faster, and more portable systems. Nanotechnology is already transforming health care. Nanoparticles are being used by scientists to target malignancies, improve drug delivery systems, and improve medical imaging. Integration of biomolecular logic gates with nanostructures has opened new paths in illness detection and therapy that need precise control of complicated components. Most studies have used fluorescence intensity techniques to implement the logic function. Its drawbacks, mainly when working with nanoparticles in intracellular media, include fluctuations in excitation power, fluorophore concentration dependence, and interference from cell autofluorescence. We suggest using fluorescence lifetime imaging microscopy (FLIM) in order to circumvent these constraints. Designing a nanohybrid composed of gold nanoparticles (AuNPs) and red-emitting carbon dots (CDs) can be used to develop a FLIM-based logic gate that can respond to multiple input parameters. Our findings indicate a nanohybrid that can serve as a nano-computer to receive and integrate chemical and biochemical stimuli and produce a definitive output measured by FLIM. This can open a new research avenue for enhanced diagnostics and therapy that require complicated factor handling and precise control. The AuNPs are conjugated to CDs' surfaces through a strong covalent linkage. The AuNP-CD nanohybrid shows fluorescence lifetime (FLT) quenching of pristine CDs after conjugation to AuNPs. The FLT was reduced from 3.61 ± 0.037 to 2.48 ± 0.040 ns. This quenched FLT can be recovered back by using trypsin as a recovering agent, giving us a reversible logic output. The FLT was recovered to 3.01 ± 0.01 ns after trypsin addition. This "on-off-on" response can be used to construct the IMPLICATION logic gate.
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Affiliation(s)
- Shweta Pawar
- Faculty
of Engineering, Bar Ilan University, Ramat Gan 5290002, Israel
- Bar-Ilan
Institute of Nanotechnology & Advanced Materials (BINA), Bar Ilan University, Ramat Gan 5290002, Israel
| | - Hamootal Duadi
- Faculty
of Engineering, Bar Ilan University, Ramat Gan 5290002, Israel
- Bar-Ilan
Institute of Nanotechnology & Advanced Materials (BINA), Bar Ilan University, Ramat Gan 5290002, Israel
| | - Yafit Fleger
- Bar-Ilan
Institute of Nanotechnology & Advanced Materials (BINA), Bar Ilan University, Ramat Gan 5290002, Israel
| | - Dror Fixler
- Faculty
of Engineering, Bar Ilan University, Ramat Gan 5290002, Israel
- Bar-Ilan
Institute of Nanotechnology & Advanced Materials (BINA), Bar Ilan University, Ramat Gan 5290002, Israel
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Stern C, Twitto A, Snitkoff RZ, Fleger Y, Saha S, Boddapati L, Jain A, Wang M, Koski KJ, Deepak FL, Ramasubramaniam A, Naveh D. Enhancing Light-Matter Interactions in MoS 2 by Copper Intercalation. Adv Mater 2021; 33:e2008779. [PMID: 33955078 DOI: 10.1002/adma.202008779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/21/2021] [Indexed: 06/12/2023]
Abstract
The intercalation of layered compounds opens up a vast space of new host-guest hybrids, providing new routes for tuning the properties of materials. Here, it is shown that uniform and continuous layers of copper can be intercalated within the van der Waals gap of bulk MoS2 resulting in a unique Cu-MoS2 hybrid. The new Cu-MoS2 hybrid, which remains semiconducting, possesses a unique plasmon resonance at an energy of ≈1eV, giving rise to enhanced optoelectronic activity. Compared with high-performance MoS2 photodetectors, copper-enhanced devices are superior in their spectral response, which extends into the infrared, and also in their total responsivity, which exceeds 104 A W-1 . The Cu-MoS2 hybrids hold promise for supplanting current night-vision technology with compact, advanced multicolor night vision.
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Affiliation(s)
- Chen Stern
- Faculty of Engineering, Bar-Ilan University, Ramat-Gan, 52900, Israel
- Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 52900, Israel
| | - Avraham Twitto
- Faculty of Engineering, Bar-Ilan University, Ramat-Gan, 52900, Israel
- Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 52900, Israel
| | - Rifael Z Snitkoff
- Faculty of Engineering, Bar-Ilan University, Ramat-Gan, 52900, Israel
- Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 52900, Israel
| | - Yafit Fleger
- Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 52900, Israel
| | - Sabyasachi Saha
- Nanostructured Materials Group, International Iberian Nanotechnology Laboratory, Avenida Mestre José Veiga s/n, Braga, 4715-330, Portugal
- Electron Microscopy Group, Defence Metallurgical Research Laboratory (DMRL), Hyderabad, 500058, India
| | - Loukya Boddapati
- Nanostructured Materials Group, International Iberian Nanotechnology Laboratory, Avenida Mestre José Veiga s/n, Braga, 4715-330, Portugal
| | - Akash Jain
- Department of Chemical Engineering, University of Massachusetts, Amherst, MA, 01003, USA
| | - Mengjing Wang
- Department of Chemistry, University of California Davis, Davis, CA, 95616, USA
| | - Kristie J Koski
- Department of Chemistry, University of California Davis, Davis, CA, 95616, USA
| | - Francis Leonard Deepak
- Nanostructured Materials Group, International Iberian Nanotechnology Laboratory, Avenida Mestre José Veiga s/n, Braga, 4715-330, Portugal
| | - Ashwin Ramasubramaniam
- Department of Mechanical and Industrial Engineering, University of Massachusetts, Amherst, MA, 01003, USA
| | - Doron Naveh
- Faculty of Engineering, Bar-Ilan University, Ramat-Gan, 52900, Israel
- Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 52900, Israel
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Susai FA, Kovacheva D, Kravchuk T, Kauffmann Y, Maiti S, Chakraborty A, Kunnikuruvan S, Talianker M, Sclar H, Fleger Y, Markovsky B, Aurbach D. Studies of Nickel-Rich LiNi 0.85Co 0.10Mn 0.05O 2 Cathode Materials Doped with Molybdenum Ions for Lithium-Ion Batteries. Materials (Basel) 2021; 14:2070. [PMID: 33924057 PMCID: PMC8074102 DOI: 10.3390/ma14082070] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/07/2021] [Accepted: 04/16/2021] [Indexed: 11/17/2022]
Abstract
In this work, we continued our systematic investigations on synthesis, structural studies, and electrochemical behavior of Ni-rich materials Li[NixCoyMnz]O2 (x + y + z = 1; x ≥ 0.8) for advanced lithium-ion batteries (LIBs). We focused, herein, on LiNi0.85Co0.10Mn0.05O2 (NCM85) and demonstrated that doping this material with high-charge cation Mo6+ (1 at. %, by a minor nickel substitution) results in substantially stable cycling performance, increased rate capability, lowering of the voltage hysteresis, and impedance in Li-cells with EC-EMC/LiPF6 solutions. Incorporation of Mo-dopant into the NCM85 structure was carried out by in-situ approach, upon the synthesis using ammonium molybdate as the precursor. From X-ray diffraction studies and based on our previous investigation of Mo-doped NCM523 and Ni-rich NCM811 materials, it was revealed that Mo6+ preferably substitutes Ni residing either in 3a or 3b sites. We correlated the improved behavior of the doped NCM85 electrode materials in Li-cells with a partial Mo segregation at the surface and at the grain boundaries, a tendency established previously in our lab for the other members of the Li[NixCoyMnz]O2 family.
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Affiliation(s)
- Francis Amalraj Susai
- Department of Chemistry, Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 52900, Israel; (F.A.S.); (S.M.); (A.C.); (S.K.); (H.S.); (Y.F.)
| | - Daniela Kovacheva
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
| | - Tatyana Kravchuk
- Solid State Institute, Technion—Israel Institute of Technology, Haifa 32000, Israel;
| | - Yaron Kauffmann
- Department of Materials Science and Engineering, Technion—Israel Institute of Technology, Haifa 32000, Israel;
| | - Sandipan Maiti
- Department of Chemistry, Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 52900, Israel; (F.A.S.); (S.M.); (A.C.); (S.K.); (H.S.); (Y.F.)
| | - Arup Chakraborty
- Department of Chemistry, Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 52900, Israel; (F.A.S.); (S.M.); (A.C.); (S.K.); (H.S.); (Y.F.)
| | - Sooraj Kunnikuruvan
- Department of Chemistry, Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 52900, Israel; (F.A.S.); (S.M.); (A.C.); (S.K.); (H.S.); (Y.F.)
| | - Michael Talianker
- Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel;
| | - Hadar Sclar
- Department of Chemistry, Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 52900, Israel; (F.A.S.); (S.M.); (A.C.); (S.K.); (H.S.); (Y.F.)
| | - Yafit Fleger
- Department of Chemistry, Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 52900, Israel; (F.A.S.); (S.M.); (A.C.); (S.K.); (H.S.); (Y.F.)
| | - Boris Markovsky
- Department of Chemistry, Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 52900, Israel; (F.A.S.); (S.M.); (A.C.); (S.K.); (H.S.); (Y.F.)
| | - Doron Aurbach
- Department of Chemistry, Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 52900, Israel; (F.A.S.); (S.M.); (A.C.); (S.K.); (H.S.); (Y.F.)
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Pawar S, Duadi H, Fleger Y, Fixler D. Carbon Dots-Based Logic Gates. Nanomaterials (Basel) 2021; 11:232. [PMID: 33477327 PMCID: PMC7830989 DOI: 10.3390/nano11010232] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 12/11/2022]
Abstract
Carbon dots (CDs)-based logic gates are smart nanoprobes that can respond to various analytes such as metal cations, anions, amino acids, pesticides, antioxidants, etc. Most of these logic gates are based on fluorescence techniques because they are inexpensive, give an instant response, and highly sensitive. Computations based on molecular logic can lead to advancement in modern science. This review focuses on different logic functions based on the sensing abilities of CDs and their synthesis. We also discuss the sensing mechanism of these logic gates and bring different types of possible logic operations. This review envisions that CDs-based logic gates have a promising future in computing nanodevices. In addition, we cover the advancement in CDs-based logic gates with the focus of understanding the fundamentals of how CDs have the potential for performing various logic functions depending upon their different categories.
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Affiliation(s)
- Shweta Pawar
- Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel; (S.P.); (H.D.)
| | - Hamootal Duadi
- Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel; (S.P.); (H.D.)
| | - Yafit Fleger
- Bar-Ilan Institute of Nanotechnology & Advanced Materials (BINA), Bar Ilan University, Ramat Gan 5290002, Israel;
| | - Dror Fixler
- Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel; (S.P.); (H.D.)
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5
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Shani L, Michelson AN, Minevich B, Fleger Y, Stern M, Shaulov A, Yeshurun Y, Gang O. DNA-assembled superconducting 3D nanoscale architectures. Nat Commun 2020; 11:5697. [PMID: 33173061 PMCID: PMC7656258 DOI: 10.1038/s41467-020-19439-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 10/01/2020] [Indexed: 12/13/2022] Open
Abstract
Studies of nanoscale superconducting structures have revealed various physical phenomena and led to the development of a wide range of applications. Most of these studies concentrated on one- and two-dimensional structures due to the lack of approaches for creation of fully engineered three-dimensional (3D) nanostructures. Here, we present a 'bottom-up' method to create 3D superconducting nanostructures with prescribed multiscale organization using DNA-based self-assembly methods. We assemble 3D DNA superlattices from octahedral DNA frames with incorporated nanoparticles, through connecting frames at their vertices, which result in cubic superlattices with a 48 nm unit cell. The superconductive superlattice is formed by converting a DNA superlattice first into highly-structured 3D silica scaffold, to turn it from a soft and liquid-environment dependent macromolecular construction into a solid structure, following by its coating with superconducting niobium (Nb). Through low-temperature electrical characterization we demonstrate that this process creates 3D arrays of Josephson junctions. This approach may be utilized in development of a variety of applications such as 3D Superconducting Quantum interference Devices (SQUIDs) for measurement of the magnetic field vector, highly sensitive Superconducting Quantum Interference Filters (SQIFs), and parametric amplifiers for quantum information systems.
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Affiliation(s)
- Lior Shani
- Institute of Superconductivity, Department of Physics, Bar-Ilan University, 5290002, Ramat-Gan, Israel
- Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA), 5290002, Ramat-Gan, Israel
| | - Aaron N Michelson
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, 10027, USA
| | - Brian Minevich
- Department of Chemical Engineering, Columbia University, New York, NY, 10027, USA
| | - Yafit Fleger
- Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA), 5290002, Ramat-Gan, Israel
| | - Michael Stern
- Quantum Nanoelectronics Laboratory, Department of Physics, Bar-Ilan University, 5290002, Ramat-Gan, Israel
| | - Avner Shaulov
- Institute of Superconductivity, Department of Physics, Bar-Ilan University, 5290002, Ramat-Gan, Israel
- Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA), 5290002, Ramat-Gan, Israel
| | - Yosef Yeshurun
- Institute of Superconductivity, Department of Physics, Bar-Ilan University, 5290002, Ramat-Gan, Israel.
- Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA), 5290002, Ramat-Gan, Israel.
| | - Oleg Gang
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, 10027, USA.
- Department of Chemical Engineering, Columbia University, New York, NY, 10027, USA.
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, 11973, USA.
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Fleger Y, Gotlib-Vainshtein K, Talyosef Y. Matrices pattern using FIB; 'Out-of-the-box' way of thinking. J Microsc 2017; 265:307-312. [PMID: 28117892 DOI: 10.1111/jmi.12500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 09/18/2016] [Accepted: 10/09/2016] [Indexed: 11/29/2022]
Abstract
Focused ion beam (FIB) is an extremely valuable tool in nanopatterning and nanofabrication for potentially high-resolution patterning, especially when refers to He ion beam microscopy. The work presented here demonstrates an 'out-of-the-box' method of writing using FIB, which enables creating very large matrices, up to the beam-shift limitation, in short times and with high accuracy unachievable by any other writing technique. The new method allows combining different shapes in nanometric dimensions and high resolutions for wide ranges.
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Affiliation(s)
- Y Fleger
- Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, Israel
| | - K Gotlib-Vainshtein
- Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, Israel
| | - Y Talyosef
- Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan, Israel
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Shawat E, Mor V, Oakes L, Fleger Y, Pint CL, Nessim GD. What is below the support layer affects carbon nanotube growth: an iron catalyst reservoir yields taller nanotube carpets. Nanoscale 2014; 6:1545-1551. [PMID: 24323364 DOI: 10.1039/c3nr05240k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Here we demonstrate an approach to enhance the growth of vertically aligned carbon nanotubes (CNTs) by including a catalyst reservoir underneath the thin-film alumina catalyst underlayer. This reservoir led to enhanced CNT growth due to the migration of catalytic material from below the underlayer up to the surface through alumina pinholes during processing. This led to the formation of large Fe particles, which in turn influenced the morphology evolution of the catalytic iron surface layer through Ostwald ripening. With inclusion of this catalyst reservoir, we observed CNT growth up to 100% taller than that observed without the catalyst reservoir consistently across a wide range of annealing and growth durations. Imaging studies of catalyst layers both for different annealing times and for different alumina support layer thicknesses demonstrate that the surface exposure of metal from the reservoir leads to an active population of smaller catalyst particles upon annealing as opposed to a bimodal catalyst size distribution that appears without inclusion of a reservoir. Overall, the mechanism for growth enhancement we present here demonstrates a new route to engineering efficient catalyst structures to overcome the limitations of CNT growth processes.
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Affiliation(s)
- E Shawat
- Department of Chemistry and Institute for Nanotechnology, Bar-Ilan University, Ramat Gan, 52900, Israel.
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