Carbon Dots-Based Logic Gates

Pawar, Shweta; Duadi, Hamootal; Fleger, Yafit; Fixler, Dror

doi:10.3390/nano11010232

Cited by 22 publications

(22 citation statements)

References 81 publications

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“…Nanotechnology is focused on the creation, investigation, and application of new types of materials, called “nanomaterials”, of which the size of at least one dimension is from 1 to 100 nm. Nanomaterials find their application in the broadest fields, including the chemical industry [ 1 , 2 , 3 ], agriculture [ 4 , 5 ], engineering [ 6 ], pharmaceutics [ 7 ], sustainable energy [ 8 ], medicine [ 9 , 10 , 11 ], etc.…”

Section: Introductionmentioning

confidence: 99%

Magnetite Nanoparticles: Synthesis and Applications in Optics and Nanophotonics

et al. 2022

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Magnetite nanoparticles with different surface coverages are of great interest for many applications due to their intrinsic magnetic properties, nanometer size, and definite surface morphology. Magnetite nanoparticles are widely used for different medical-biological applications while their usage in optics is not as widespread. In recent years, nanomagnetite suspensions, so-called magnetic ferrofluids, are applied in optics due to their magneto-optical properties. This review gives an overview of nanomagnetite synthesis and its properties. In addition, the preparation and application of magnetic nanofluids in optics, nanophotonics, and magnetic imaging are described.

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Section: Introductionmentioning

confidence: 99%

Magnetite Nanoparticles: Synthesis and Applications in Optics and Nanophotonics

et al. 2022

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“…Carbon dots (CDs) are recently developed fluorescent carbon nanomaterials with excellent optical and structural properties, which can address a variety of logic functions. 13 The CDs are suitable candidates due to their chemical inertness, biocompatibility, facile functionalization, and high photostability. 25 − 27 CDs emitting in the near-infrared window are of significant importance for biological logic functions due to their high electromagnetic radiation penetration depth and minimum autofluorescence of tissue.…”

Section: Introductionmentioning

confidence: 99%

Design and Use of a Gold Nanoparticle–Carbon Dot Hybrid for a FLIM-Based IMPLICATION Nano Logic Gate

et al. 2022

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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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“…Molecular computing has attracted significant research interests around scientific fields with the aim of intelligent diagnostics, multiparameter sensing, and effective therapeutic applications in the past decade . Currently, various logic gates produced miniaturized and functional devices for molecule-scale computing by utilizing different signals as inputs. , Following the pioneering work of de Silva in 1993, various chemical systems, including nucleic acids, biomolecules, organic fluorophores, and nanomaterials, , have been demonstrated to conduct molecular computing, such as AND, NOT, YES, OR, NAND, NOR, INHIBIT, etc. − These logic gates often employ fluorescent, colorimetric, and electrochemical signals as their outputs, which often suffer from sophisticated material synthesis and handling procedures, dependent readouts and records, or a lack of portability that is usually operational at the single molecular level. , Therefore, transforming molecular logic gates into resettable, convenient, economic, and easily operational sensing systems will greatly broaden their applications.…”

Section: Introductionmentioning

confidence: 99%

Logic Gate Design Using Multicolor Fluorescent Carbon Nanodots for Smartphone-Based Information Extraction

Xiao

Zhou

Zhang

et al. 2021

ACS Appl. Nano Mater.

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Carbon nanodot (CD)-based logic gates, depending on the fluorescence response of CDs toward various chemicals and biological inputs, have attracted increasing research attention recently. However, it is still challenging to transform multicolor CD-based logic operations into convenient, reprogrammable, and independent readout sensing systems for practical applications. In this study, blue (CD-1), green (CD-2), and red (CD-3) emissive CDs were synthesized and conditioned to implement a series of logic operations, including NOT, PASS 1, NOR, NAND, and IMP. CDs served as logic gates, while Hg2+, Fe3+, H+, and OH– served as chemical inputs. In addition, logic operation information was encoded into Quick Response (QR) codes, which could be easily decoded by a smartphone, highlighting the convenience of information storage and extraction. This study demonstrates an avenue in molecular computing that enables multilevel logic operations, and a convenient and user-friendly readout system for molecular computing. The method reported here holds a great promise to simplify complicated chemo/biosensing for practical applications in the future.

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Carbon Dots-Based Logic Gates

Cited by 22 publications

References 81 publications

Magnetite Nanoparticles: Synthesis and Applications in Optics and Nanophotonics

Magnetite Nanoparticles: Synthesis and Applications in Optics and Nanophotonics

Design and Use of a Gold Nanoparticle–Carbon Dot Hybrid for a FLIM-Based IMPLICATION Nano Logic Gate

Logic Gate Design Using Multicolor Fluorescent Carbon Nanodots for Smartphone-Based Information Extraction

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