{"title":"Coalescence of Au Nanoparticles in Silica Aerogel under Electron Beam Irradiation","authors":"Heena Sammi, Neha Sardana, Manish Mohanta, Bhagwati Sharma","doi":"10.2174/1573413719666221122123805","DOIUrl":"https://doi.org/10.2174/1573413719666221122123805","url":null,"abstract":"Background: The coalescence of Au nanoparticles embedded in the silica gel matrix was observed by E-beam irradiation in a transmission electron microscope. Methods: It was examined that interparticle spacing between nanoparticles was reduced after incorporation into the matrix and particles came close to each other. TEM studies have shown that during E-beam irradiation ~13 nm Au nanoparticles contacted with each other along with the shrinkage of the silica aerogel or as well as the removal of surfactant layer, and transformed into different shapes of particles such as dumbbell and chain-like particles as per the interparticle gap. Results: This nanoparticle-aerogel matrix has the potential for applications in sensing, nonlinear optics, and catalysis. Conclusion: This work enhances the understanding of the role of silica aerogel and E-beam irradiation in directing the coalescence of nanoparticles.","PeriodicalId":10827,"journal":{"name":"Current Nanoscience","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136103078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Review on Biomimetic Cilia Microrobots: Driving Methods, Application and Research Prospects","authors":"Ziang Jing, Gaoshen Cai, Yufeng Pan, Yongfeng Yuan","doi":"10.2174/0115734137268436231023071009","DOIUrl":"https://doi.org/10.2174/0115734137268436231023071009","url":null,"abstract":"Abstract: With the development of science and technology, microrobots have been used in medicine, biology, rescue, and many other fields. However, the microrobots have problems such as energy and motion due to miniaturization. In order to solve the problem of the energy supply of microrobots, researchers have provided more drive schemes for microrobots. Inspired by the biological cilia, the biomimetic cilia have been developed and applied to microrobots to achieve propulsion, liquid pumping, liquid mixing, and particle manipulation. This review summarizes the different driving modes of microrobots, focusing on the application of magnetic drive and optical drive in the field of micro-robots. The structure and function of biological cilia and biomimetic cilia are introduced. The application of biomimetic cilia microrobots in various fields is discussed, and the current challenges and future development trends of biomimetic cilia microrobots are summarized. This review hopes to provide useful help for researchers of biomimetic cilia microrobots","PeriodicalId":10827,"journal":{"name":"Current Nanoscience","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135928536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Current NanosciencePub Date : 2023-10-20DOI: 10.2174/0115734137264742231001142853
Hamid Reza Garshasbi, Seyed Morteza Naghib
{"title":"A Review on Nano/Microfluidic Devices for Cell Isolation Techniques: Recent Progress and Advances","authors":"Hamid Reza Garshasbi, Seyed Morteza Naghib","doi":"10.2174/0115734137264742231001142853","DOIUrl":"https://doi.org/10.2174/0115734137264742231001142853","url":null,"abstract":"Abstract: Micro/nanofluidic devices and systems have gained increasing interest in healthcare applications over the last few decades because of their low cost and ease of customization, with only a small volume of sample fluid required. Many biological queries are now being addressed using various types of single-molecule research. With this rapid rise, the disadvantages of these methods are also becoming obvious. Micro/nanofluidics-based biochemical analysis outperforms traditional approaches in terms of sample volume, turnaround time, ease of operation, and processing efficiency. A complex and multifunctional micro/nanofluidic platform may be used for single-cell manipulation, treatment, detection, and sequencing. We present an overview of the current advances in micro/nanofluidic technology for single-cell research, focusing on cell capture, treatment, and biochemical analyses. The promise of single-cell analysis using micro/nanofluidics is also highlighted.","PeriodicalId":10827,"journal":{"name":"Current Nanoscience","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135619495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Current NanosciencePub Date : 2023-10-12DOI: 10.2174/0115734137252023230919054547
None Kajal, Vijay Kumar Sharma
{"title":"NBTI Effect Survey for Low Power Systems in Ultra-nanoregime","authors":"None Kajal, Vijay Kumar Sharma","doi":"10.2174/0115734137252023230919054547","DOIUrl":"https://doi.org/10.2174/0115734137252023230919054547","url":null,"abstract":"Background: Electronic device scaling with the advancement of technology nodes maintains the performance of the logic circuits with area benefit. Metal oxide semiconductor (MOS) devices are the fundamental blocks for building logic circuits. Area minimization with higher efficiency of the circuits motivates the researchers of very large-scale integration (VLSI) design. Moreover, the reliability of digital circuits is one of the biggest challenges in VLSI technology. A major issue in reliability is negative bias temperature instability (NBTI) degradation. NBTI affects the efficiency and reliability of electronic devices. Method: This paper presents a review of NBTI physical-based mechanisms. NBTI's impact on VLSI circuits and techniques has been studied to mitigate and compensate for the effect of NBTI. Result: This review paper presents an idea to relate the NBTI and leakage mitigation techniques. This study gives an overview of the efficiency, complexity, and overhead of NBTI mitigation techniques and methodologies. Conclusion: This survey provides a brief idea about NBTI degradation by using reliability simulation. Moreover, the extensive aging effect is discussed in the paper.","PeriodicalId":10827,"journal":{"name":"Current Nanoscience","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136015610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Current NanosciencePub Date : 2023-10-10DOI: 10.2174/0115734137269553230919171016
Qiaoyun Wu, Rongrong Hu, Bobo Yang, Wenfang Peng, Mingming Shi, Yuefeng Li, Lin Cheng, Pan Liang, Jun Zou
{"title":"Recent Progress in the Composites of Perovskite Nanocrystals and II-VI Quantum Dots: Their Synthesis, Applications, and Prospects","authors":"Qiaoyun Wu, Rongrong Hu, Bobo Yang, Wenfang Peng, Mingming Shi, Yuefeng Li, Lin Cheng, Pan Liang, Jun Zou","doi":"10.2174/0115734137269553230919171016","DOIUrl":"https://doi.org/10.2174/0115734137269553230919171016","url":null,"abstract":"The remarkable photoelectric characteristics of perovskite nanocrystals (NCs), including high fault tolerance, tunable photoluminescence (PL) emission, and high carrier mobility, contribute to making them especially attractive for photonic and optoelectronic applications. Unfortunately, the poor environmental thermal and light stability set obstacles to their industrial applications. Over the past 40 years, II-VI semiconductor quantum dots (QDs) have achieved many important photophysics findings and optoelectronic applications. Compared with perovskite NCs, II-VI semiconductor QDs still have a relatively weaker molar absorbance coefficient. Whereas, significant enhancement of both the stability and the optical performance of the composites of perovskite NCs and II-VI QDs are of interest for photovoltaic and optoelectronic devices. The composites of perovskite NCs and II-VI QDs come in two primary types: core/shell structures and heterojunction structures. To better understand the composites of perovskite NCs and II-VI QDs, the approaches of synthesis methods, their optoelectronic properties, carrier dynamics and potential applications in solar cells, light emitting diodes (LEDs) and photodetectors are summarized. Furthermore, the unmet problems and the potential applications are also presented.","PeriodicalId":10827,"journal":{"name":"Current Nanoscience","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136361063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Current NanosciencePub Date : 2023-10-05DOI: 10.2174/0115734137252527230919110809
Himanshu Chaudhrya, Naresh K. Rangraa, Pooja A. Chawlaa
{"title":"Synthetic Strategies for Vitamin-loaded Carbon Dots and their Detection using Biosensors: A Review","authors":"Himanshu Chaudhrya, Naresh K. Rangraa, Pooja A. Chawlaa","doi":"10.2174/0115734137252527230919110809","DOIUrl":"https://doi.org/10.2174/0115734137252527230919110809","url":null,"abstract":"Abstract: Carbon dots belong to the class of nanomaterials invented accidentally and are attracting a lot of attention these days. Carbon dots are non-toxic, photostable, and easy-to-synthesize nano formulations having good water-soluble properties when treated chemically by manipulating surface active groups, followed by the addition of solubilizing agents and size reduction. These are widely used in bioimaging, electrochemical sensing, targeted drug delivery, and other biomedical activities. In recent years, significant attempts have been emphasized by analysts to the detection of vitamins embedded carbon dots using biosensors. The biosensing of vitamins has become easy due to the luminescence property of carbon dots, which makes them easy to detect. Therefore, in this review, we have reported synthetic strategies and recent biosensorbased detection techniques used in the analysis of vitamin-loaded carbon dots. Even from the carbon dot’s analytical perspective, there is still a lot of research needed in the area of biosensing, bioimaging, and healthcare applications. Unique features, along with the controllable synthesis methods, will lead to a bright future in the detection and characterization of drugs using carbon dots.","PeriodicalId":10827,"journal":{"name":"Current Nanoscience","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135546667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Current NanosciencePub Date : 2023-10-04DOI: 10.2174/0115734137268768230919170012
S. Sreejith, J. Ajayan, N.V. Uma Reddy, Manikandan M., Radhika J.M
{"title":"A Critical Review on Various Buffer Layers used to Enhance the Photovoltaic Performance of Organic Solar Cells","authors":"S. Sreejith, J. Ajayan, N.V. Uma Reddy, Manikandan M., Radhika J.M","doi":"10.2174/0115734137268768230919170012","DOIUrl":"https://doi.org/10.2174/0115734137268768230919170012","url":null,"abstract":"Abstract: Due to the high need for sustainable energy sources, there has been a tremendous increase in SC (solar cell) production and research in recent years. Despite the fact that inorganic SC has led the SC consumer market due to its exceptional efficiency, its expensive and difficult manufacture method makes it unaffordable. Hence alternative technology for SC has been explored by researchers to overcome the draw backs of inorganic SC fabrication. OSC (organic solar cell) alternatively known as polymer SC has the advantage of having lightweight, low production cost, and simple device structure. During the last few years, significant attention has been given in order to overcome the material and technological barriers in OSC devices to make them commercially viable. Buffer layers play a significant part in improving the power conversion efficiencies in OSCs, thus it is necessary to comprehend the underlying microscopic mechanisms that underlie the advancements in order to support the current qualitative knowledge. In this review article, we have studied extensively the impact of different BLs (buffer-layer) in enhancing the PCE (power conversion efficiency) and absorption capabilities of OSCs.","PeriodicalId":10827,"journal":{"name":"Current Nanoscience","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135647355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Current NanosciencePub Date : 2023-10-03DOI: 10.2174/0115734137259719230921065320
Qiang Wan, Rong Li, Meiping Ren, Gang Ke
{"title":"Hydrothermally Synthesized Boletus Brucella-derived Carbon Quantum Dots as a Fluorescent Probe for the Detection of Vitamin B2","authors":"Qiang Wan, Rong Li, Meiping Ren, Gang Ke","doi":"10.2174/0115734137259719230921065320","DOIUrl":"https://doi.org/10.2174/0115734137259719230921065320","url":null,"abstract":"Background:: In the paper, Boletus Brucella was used as carbon source material to prepare carbon dots (CDs) by one-step hydrothermal method. The CDs had high quantum yield and high photostability. Methods:: A range of characterization studies were conducted on CDs, and the results showed that the average particle size of CDs was 5 nm, emitting blue fluorescence. The optimal excitation wavelength was 337 nm, and the emission wavelength was 440 nm. Results:: Based on the static quenching, the fluorescence of CDs could be effectively quenched by VB2. Therefore, a highly sensitive and selective fluorescent probe for detecting VB2 was constructed. The CDs were successfully used to detect tablets, human blood, and urine. Conclusion:: The recovery rate of VB2 was 97.55~99.45%, and the relative standard deviation was 1.29~3.76 (n=3). conclusion: The recovery rate of VB2 was 97.55~99.45%, and the relative standard deviation was 1.29~3.76 (n=3).","PeriodicalId":10827,"journal":{"name":"Current Nanoscience","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135789236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Current NanosciencePub Date : 2023-09-15DOI: 10.2174/1573413719666230915103459
Ke Xu, Bingge Wang
{"title":"Study on Measurement Method of Three-dimensional Position of Unlabeled Microspheres under Bright Background","authors":"Ke Xu, Bingge Wang","doi":"10.2174/1573413719666230915103459","DOIUrl":"https://doi.org/10.2174/1573413719666230915103459","url":null,"abstract":"Abstract: Using computer vision technology to obtain the position and trajectory data of particle probe microspheres from microscope images has significance and value in the molecular field. However, most of the existing microsphere measurement methods are based on transmission, which can only be measured under transparent samples and substrates and are not suitable for the application scenario of living cell measurement. In this paper, a method based on reflectivity imaging is proposed to measure the three-dimensional position of the dark microspheres in the bright field. Based on the outermost ring radius method, the relationship between the inner ring radius of the microsphere spot and the out-of-focus distance was explored to measure the coordinates in the Z direction. Cardiomyocytes were combined with 10um size silica microspheres. Experiments show that in a bright field with a high perturbation environment, it can achieve high precision measurement of dark microspheres and achieve three-dimensional position measurement with an accuracy of 50nm in XY direction and 100nm in Z direction.","PeriodicalId":10827,"journal":{"name":"Current Nanoscience","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135485374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Current NanosciencePub Date : 2023-09-01DOI: 10.2174/1573413718666220607164053
Khaled Alkhuder
{"title":"Surface-Enhanced Raman Scattering: A Promising Nanotechnology for Anti-Counterfeiting and Tracking Systems","authors":"Khaled Alkhuder","doi":"10.2174/1573413718666220607164053","DOIUrl":"https://doi.org/10.2174/1573413718666220607164053","url":null,"abstract":"Abstract: Surface-enhanced Raman Scattering (SERS) is a sensing method based on inelastic scattering of a laser beam by a reporter molecule absorbed on a plasmonic substrate. The incident laser beam induces a localized-surface plasmon resonance in the substrate, which generates an oscillating electromagnetic field on the substrate dielectric surface. Under the influence of this field, the reporter molecule absorbed on the plasmonic substrate starts to vibrate, causing inelastic scattering of the laser beam. The laser-induced electromagnetic field is also the main contributor to the enhancement observed in the intensity of the scattered light. Plasmonic substrates are nanostructured surfaces often made of noble metals. The surface enhancement of a plasmonic substrate is determined primarily by factors related to the substrate’s nano-architecture and its composition. SERS-based labeling has emerged as a reliable and sophisticated anti-counterfeiting technology with potential applications in a wide range of industries. This technology is based on detecting the SERS signals produced by SERS tags using Raman spectroscopy. SERS tags are generally made of a plasmonic substrate, a Raman reporter, and a protective coating shell. They can be engineered using a wide variety of materials and methods. Several SERS-based anticounterfeiting labels have been developed in the past two decades. Some of these labels have been successfully combined with identification systems based on artificial intelligence. The purpose of this review is to shed light on the SERS technology and the progress that has been achieved in the SERS-based tracking systems.","PeriodicalId":10827,"journal":{"name":"Current Nanoscience","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135685709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}