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Yuan C, Li M, Wang M, Lv J, Sun Y, Lu T, Jia Y, Cao H, Lin T. Non-destructive and simultaneous development and enhancement of latent fingerprints on stainless steel based on the electrochromic effect of electrodeposited manganese oxides. Talanta 2024; 275:126148. [PMID: 38705016 DOI: 10.1016/j.talanta.2024.126148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 04/17/2024] [Accepted: 04/23/2024] [Indexed: 05/07/2024]
Abstract
Latent fingerprints, as one of the most frequently encountered traces in crime scene investigation and also one of the largest sources of forensic evidence, can play a critical role in determining the identity of a person who may be involved in a crime. Due to the invisible characteristic of latent fingerprints, exploring efficient techniques to visualize them (especially the ones resided on metallic surfaces) while retain the biological and chemical information (e.g., touch DNA) has become a multidisciplinary research focus. Herein we reported a new and highly sensitive electrochemical interfacial strategy of simultaneously developing and enhancing latent fingerprints on stainless steel based on synchronous electrodeposition and electrochromism of manganese oxides in a neutral aqueous electrolyte. By utilizing a specially designed device for electrochemical testing and image capture, a series of electrochemical measurements, physical characterization and image analysis have been applied to evaluate the feasibility, development accuracy and enhancement efficacy of the proposed electrochemical system. The qualitative and quantitative analysis on the in situ and ex situ fingerprint images indicates that the three levels of fingerprint features can be precisely developed and effectively enhanced. Forensic DNA typing has also been performed to reveal actual impact of the proposed electrochemical system on subsequent analysis of touch DNA in fingerprint residues. The ratio of detected loci after electrochemical treatment reaches up to 98.5 %, showing non-destructive nature of this fingerprint development and enhancement technique.
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Affiliation(s)
- Chuanjun Yuan
- College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China; Research Center of Crime Governance in the New Era, Criminal Investigation Police University of China, Shenyang, 110035, China.
| | - Ming Li
- College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China; Research Center of Crime Governance in the New Era, Criminal Investigation Police University of China, Shenyang, 110035, China
| | - Meng Wang
- College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China; Research Center of Crime Governance in the New Era, Criminal Investigation Police University of China, Shenyang, 110035, China
| | - Jiaming Lv
- College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China
| | - Yifei Sun
- College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China
| | - Tianyi Lu
- College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China
| | - Yuxin Jia
- College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China
| | - Haijun Cao
- Huadu District Branch, Guangzhou Municipal Public Security Bureau, Guangzhou, 510810, China
| | - Tianchun Lin
- Huadu District Branch, Guangzhou Municipal Public Security Bureau, Guangzhou, 510810, China
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He Y, Yu H, Duan G, Wang Y, Yang Q, Feng L, Zhang J. Thermal performance and experimental analysis of stainless steel flat plate solar collector with full-flow channels. Heliyon 2024; 10:e28255. [PMID: 38560198 PMCID: PMC10979057 DOI: 10.1016/j.heliyon.2024.e28255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 03/14/2024] [Accepted: 03/14/2024] [Indexed: 04/04/2024] Open
Abstract
The thermal performance of a flat plate solar collector (FPSC) is a critical indicator that depends on the environment, operational parameters, and dimensions. This study examines the impact of size on thermal performance improvement mechanisms. Firstly, numerical simulation models are introduced as the foundation for optimization research. This involves analyzing the flow resistance of microchannels and defining their structural parameters. Furthermore, experimental tests were conducted on a stainless steel flat plate solar collector (S/S FPSC) with the best design parameters to validate the accuracy of the mathematical model during the design phase. The results indicate that increasing the width of the microchannel and the height of corrugations can effectively enhance the thermal performance of the S/S FPSC. The momentary efficiency is projected to reach a remarkable 86.10% under ideal circumstances. Additionally, a mathematical expression was proposed to establish the relationship between the surrounding conditions and the momentary efficiency of the S/S FPSC. Moreover, the microchannel comprises S/S material, maintaining a homogeneous temperature distribution to maximize heat absorption. The use of stainless steel also extends the lifespan of the FPSC.
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Affiliation(s)
- Yi He
- The School of Architecture and Urban Planning, Shandong Jianzhu University, Jinan, 250101, China
| | - Hongwen Yu
- The School of Architecture and Urban Planning, Shandong Jianzhu University, Jinan, 250101, China
| | - Guangbin Duan
- School of Materials Science and Engineering, University of Jinan, Jinan, 250024, China
| | - Yong Wang
- School of Materials Science and Engineering, University of Jinan, Jinan, 250024, China
| | - Qianfu Yang
- Shandong Sangle Group Co., Ltd, Jinan, 250101, China
| | - Lei Feng
- Shandong Sangle Group Co., Ltd, Jinan, 250101, China
| | - Jiaming Zhang
- Zhongke Low Carbon Technology Co., Ltd, Jinan, 250014, China
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Ma D, Niu H, Huang J, Li Q, Sun J, Cai H, Zhou Z, Wang J. Porous NiMoO 4 Nanosheet Films and a Device with Ultralarge Optical Modulation for Electrochromic Energy-Storage Applications. NANO LETTERS 2024; 24:814-821. [PMID: 38193454 DOI: 10.1021/acs.nanolett.3c03270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
Reducing building energy consumption, improving aesthetics, and improving occupant privacy as well as comfort by dynamically adjusting solar radiation are important application areas for electrochromic (EC) smart windows. However, the current transition metal oxides still cannot meet the requirements of neutral coloration and large optical modulation. We report NiMoO4 nanosheet films directly grown on fluorine-doped tin oxide glasses. The as-grown NiMoO4 film not only achieves neutral coloration from transparent to dark brown but also shows an ultralarge optical modulation (86.8% at 480 nm) and excellent cycling stability (99.4% retention of maximum optical modulation after 1500 cycles). Meanwhile, an EC device demonstrating good EC performance was constructed. These results will greatly promote the research and development of binary transition metal oxides for both EC and energy-storage applications, and NiMoO4 films may be an excellent candidate to replace NiO films as ion-storage layers in complementary EC devices with WO3 films as EC layers.
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Affiliation(s)
- Dongyun Ma
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Haibin Niu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Jiahui Huang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Qianwen Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Jiawei Sun
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Haojie Cai
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Ziqiang Zhou
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Jinmin Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
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Bécue A, Champod C. Interpol review of fingermarks and other body impressions 2019 - 2022). Forensic Sci Int Synerg 2022; 6:100304. [PMID: 36636235 PMCID: PMC9830181 DOI: 10.1016/j.fsisyn.2022.100304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Ansari AA, Aldajani KM, AlHazaa AN, Albrithen HA. Recent progress of fluorescent materials for fingermarks detection in forensic science and anti-counterfeiting. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214523] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Li M, Xu J, Zheng Q, Guo C, Chen Y. Chemical-Based Surface Plasmon Resonance Imaging of Fingerprints. Anal Chem 2022; 94:7238-7245. [PMID: 35549090 DOI: 10.1021/acs.analchem.2c00389] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Fingerprints are extremely useful in personal identification; however, they are usually based on physical rather than chemical images because it remains a challenge to reveal a clear chemical fingerprint easily and sensitively. Herein, a surface plasmon resonance imaging (SPRi) method, combined with a chemically selective stepwise signal amplification (CS3A) strategy, is proposed to chemically image fingerprints with adjustable sensitivity and clarity. High-fidelity glucose-associated fingerprint images were obtained at five to seven cycles of CS3A based on the recognition reaction of concanavalin A (ConA) with dextran. The method is also extendable to image substances that possess and/or can be tagged with ConA- or dextran-recognizable groups. For demonstration, SPRi of carboxylic substances was conducted by amidating the carboxyl group with glucosamine to enable the ConA-based CS3A. Glucose- and carboxyl-based fingerprints were simultaneously and clearly imaged, allowing us to perform quantitative analysis of the representative of either glucose or amino acid (e.g., serine) or both. The curves measured from the standard spots were linear in the ranges of 1-4000 μM for glucose and 3.2-4000 μM for serine, with linear correlated coefficients of 0.9979 and 0.9962, respectively. It was then applied to the study of metabolic secretions in fingerprints during running exercise, yielding variation tendencies similar to those measured from sweat samples in the literature. As a noninvasive tool, the CS3A-coupled SPRi reveals both clear images of fingerprints and quantitative chemical information, and it is anticipated to become a competitive new method for chemically imaging fingerprints.
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Affiliation(s)
- Mingjie Li
- Key Laboratory of Analytical Chemistry for Living Biosystems; CAS Research/Education Center for Excellence in Moleclar Sciences, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiying Xu
- Key Laboratory of Analytical Chemistry for Living Biosystems; CAS Research/Education Center for Excellence in Moleclar Sciences, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qingfeng Zheng
- Key Laboratory of Analytical Chemistry for Living Biosystems; CAS Research/Education Center for Excellence in Moleclar Sciences, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Guo
- Key Laboratory of Analytical Chemistry for Living Biosystems; CAS Research/Education Center for Excellence in Moleclar Sciences, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yi Chen
- Key Laboratory of Analytical Chemistry for Living Biosystems; CAS Research/Education Center for Excellence in Moleclar Sciences, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China.,National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Huaiyin Institute of Technology, Huaian 223003, China.,University of Chinese Academy of Sciences, Beijing 100049, China
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A critical review of fundamentals and applications of electrochemical development and imaging of latent fingerprints. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138798] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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