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Kim MJ, Bae HE, Kwon S, Park MK, Yong D, Kang MJ, Pyun JC. Phage-targeting bimetallic nanoplasmonic biochip functionalized with bacterial outer membranes as a biorecognition element. Biosens Bioelectron 2023; 238:115598. [PMID: 37597282 DOI: 10.1016/j.bios.2023.115598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 08/03/2023] [Accepted: 08/12/2023] [Indexed: 08/21/2023]
Abstract
The use of phages-a natural predator of bacteria-has emerged as a therapeutic strategy for treating multidrug-resistant bacterial infections; thus, the isolation and detection of phages from the environment is crucial for advancing phage therapy. Herein, for the first time, we propose a nanoplasmonic-based biodetection platform for phages that utilizes bacterial outer membranes (OMs) as a biorecognition element. Conventional biosensors based on phage-bacteria interactions encounter multiple challenges due to the bacteriolytic phages and potentially toxic bacteria, resulting in instability and risk in the measurement. Therefore, instead of whole living bacteria, we employ a safe biochemical OMs fraction presenting phage-specific receptors, allowing the robust and reliable phage detection. In addition, the biochip is constructed on bimetallic nanoplasmonic islands through solid-state dewetting for synergy between Au and Ag, whereby sensitive detection of phage-OMs interactions is achieved by monitoring the absorption peak shift. For high detection performance, the nanoplasmonic chip is optimized by systematically investigating the morphological features, e.g., size and packing density of the nanoislands. Using our optimized device, phages are detected with high sensitivity (≥∼104 plaques), specificity (little cross-reactivity), and affinity (stronger binding to the host OMs than anti-bacterial antibodies), further exhibiting the cell-killing activities.
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Affiliation(s)
- Moon-Ju Kim
- Department of Materials and Science and Engineering, Yonsei University, Seoul, 03722, South Korea
| | - Hyung Eun Bae
- Department of Materials and Science and Engineering, Yonsei University, Seoul, 03722, South Korea
| | - Soonil Kwon
- Department of Materials and Science and Engineering, Yonsei University, Seoul, 03722, South Korea
| | - Mi-Kyung Park
- School of Food Science and Biotechnology, Kyungpook National University, Daegu, 41566, South Korea
| | - Dongeun Yong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, 03722, South Korea
| | - Min-Jung Kang
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - Jae-Chul Pyun
- Department of Materials and Science and Engineering, Yonsei University, Seoul, 03722, South Korea.
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Lin S, Habib MA, Burse S, Mandavkar R, Khalid T, Joni MH, Li MY, Kunwar S, Lee J. Hybrid UV Photodetector Design Incorporating AuPt Alloy Hybrid Nanoparticles, ZnO Quantum Dots, and Graphene Quantum Dots. ACS APPLIED MATERIALS & INTERFACES 2023; 15:2204-2215. [PMID: 36563284 DOI: 10.1021/acsami.2c19006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A hybrid device scheme is an attractive strategy in the construction of advanced UV photodetectors due to the flexibility in selecting the components and correspondingly improved optoelectronic properties by the cooperation of various components, which cannot be achieved by a single component device. In this work, a novel hybrid UV photodetector (PD) is demonstrated by adapting AuPt alloy hybrid nanoparticles (AHNPs), ZnO quantum dots (QDs), and graphene quantum dots (GQDs), namely, GQD/ZnO/AHNP PD. The optimized device achieves high-end figure-of-merit performance with a responsivity of 2299 mA/W, detectivity of 7.04 × 1010 jones, and external quantum efficiency of 741%. Enhanced photocurrent can be associated with the hot electron generation around the AuPt AHNPs and swift transfer to the conduction band of ZnO QDs. At the same time, the added carrier injection is achieved by a thin layer of GQDs. High density of hotspots and electromagnetic fields are generated by the strong localized surface plasmon resonance (LSPR) by the uniquely designed AuPt AHNPs with the fully alloyed AuPt NPs and adjacent small background Au NPs. The e-field distribution of various NP configurations is systematically investigated with finite-difference time-domain (FDTD) simulations.
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Affiliation(s)
- Shusen Lin
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul01897, South Korea
| | - Md Ahasan Habib
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul01897, South Korea
| | - Shalmali Burse
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul01897, South Korea
| | - Rutuja Mandavkar
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul01897, South Korea
| | - Tasmia Khalid
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul01897, South Korea
| | - Mehedi Hasan Joni
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul01897, South Korea
| | - Ming-Yu Li
- School of Science, Wuhan University of Technology, Wuhan, Hubei430070, China
| | - Sundar Kunwar
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul01897, South Korea
- Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico87545, United States
| | - Jihoon Lee
- Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul01897, South Korea
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Hamdan A, Stafford L. A Versatile Route for Synthesis of Metal Nanoalloys by Discharges at the Interface of Two Immiscible Liquids. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3603. [PMID: 36296793 PMCID: PMC9611028 DOI: 10.3390/nano12203603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/11/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Discharge in liquid is a promising technique to produce nanomaterials by electrode erosion. Although its feasibility was demonstrated in many conditions, the production of nanoalloys by in-liquid discharges remains a challenge. Here, we show that spark discharge in liquid cyclohexane that is in contact with conductive solution, made of a combination of Ni-nitrate and/or Fe-nitrate and/or Co-nitrate, is suitable to produce nanoalloys (<10 nm) of Ni-Fe, Ni-Co, Co-Fe, and Ni-Co-Fe. The nanoparticles are synthesized by the reduction of metal ions during discharge, and they are individually embedded in C-matrix; this latter originates from the decomposition of cyclohexane. The results open novel ways to produce a wide spectrum of nanoalloys; they are needed for many applications, such as in catalysis, plasmonic, and energy conversion.
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Facile synthesis by laser ablation in liquid of nonequilibrium cobalt-silver nanoparticles with magnetic and plasmonic properties. J Colloid Interface Sci 2021; 585:267-275. [DOI: 10.1016/j.jcis.2020.11.089] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/16/2020] [Accepted: 11/23/2020] [Indexed: 12/13/2022]
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