Graphene-Based Optical Biosensors and Imaging

2017 ◽  
pp. 93-110
Author(s):  
Tang Zhiwen ◽  
He Shijiang ◽  
Pei Hao ◽  
Du Dan ◽  
Fan Chunhai ◽  
...  
Keyword(s):  
Optical Biosensors

Nanoporous Anodic Alumina Barcodes: Toward Smart Optical Biosensors

2012 ◽  
Vol 24 (8) ◽  
pp. 1050-1054 ◽  
Author(s):  
Abel Santos ◽  
Victor S. Balderrama ◽  
María Alba ◽  
Pilar Formentín ◽  
Josep Ferré-Borrull ◽  
...  
Keyword(s):  
Anodic Alumina ◽  
Optical Biosensors ◽  
Nanoporous Anodic Alumina

scholarly journals Optical Biosensors Based on Semiconductor Nanostructures

Sensors ◽  
2009 ◽  
Vol 9 (7) ◽  
pp. 5149-5172 ◽  
Author(s):  
Raúl Martín-Palma ◽  
Miguel Manso ◽  
Vicente Torres-Costa
Keyword(s):  
Semiconductor Nanostructures ◽  
Optical Biosensors

scholarly journals Microfluidic Chip-Based Cancer Diagnosis and Prediction of Relapse by Detecting Circulating Tumor Cells and Circulating Cancer Stem Cells

Cancers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 1385
Author(s):  
Hyeon-Yeol Cho ◽  
Jin-Ha Choi ◽  
Joungpyo Lim ◽  
Sang-Nam Lee ◽  
Jeong-Woo Choi
Keyword(s):  
Stem Cells ◽  
Cancer Stem Cells ◽  
Tumor Cells ◽  
Circulating Tumor Cells ◽  
Metastatic Cancer ◽  
Cancer Prognosis ◽  
Optical Biosensors ◽  
Diagnosis And Prognosis ◽  
Noise Factors ◽  
Prediction Of Relapse

Detecting circulating tumor cells (CTCs) has been considered one of the best biomarkers in liquid biopsy for early diagnosis and prognosis monitoring in cancer. A major challenge of using CTCs is detecting extremely low-concentrated targets in the presence of high noise factors such as serum and hematopoietic cells. This review provides a selective overview of the recent progress in the design of microfluidic devices with optical sensing tools and their application in the detection and analysis of CTCs and their small malignant subset, circulating cancer stem cells (CCSCs). Moreover, discussion of novel strategies to analyze the differentiation of circulating cancer stem cells will contribute to an understanding of metastatic cancer, which can help clinicians to make a better assessment. We believe that the topic discussed in this review can provide brief guideline for the development of microfluidic-based optical biosensors in cancer prognosis monitoring and clinical applications.

Adsorption–Desorption Characteristics of ss-DNA on 2D TpTta-COF Studied by Fluorescently Labeled Oligonucleotides

NANO ◽  
2021 ◽  
pp. 2150050
Author(s):  
Zhaoyu Han ◽  
Sen Li ◽  
Shaoxian Yin ◽  
Zhi-Qin Wang ◽  
Yanfei Cai ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Kinetic Mechanism ◽  
Optical Biosensors ◽  
Desorption Kinetic ◽  
Wide Range ◽  
Potential Applications ◽  
Fluorescently Labeled Oligonucleotides ◽  
Adsorption Desorption ◽  
Physical And Chemical ◽  
And Chemical Properties

Being the newest member of the 2D materials family, 2D-nanosheet possesses many distinctive physical and chemical properties resulting in a wide range of potential applications. Recently, it was discovered that 2D COF can adsorb single-stranded DNA (ss-DNA) efficiently as well as usefully to quench fluorophores. These properties make it possible to prepare DNA-based optical biosensors using 2D COF. While practical analytical applications are being demonstrated, the fundamental understanding of binding between 2D COF and DNA in solution received relatively less attention. In this work, we carried out a systematic study to understand the adsorption and desorption kinetic, mechanism, and influencing factors of ss-DNA on the surface of 2D COF. We demonstrated that shorter DNAs are adsorbed more rapidly and bind more tightly to the surface of 2D COF. The adsorption is favored by a higher pH. The different buffer types also can affect the adsorption. In Tris-HCl solution, the adsorption reached highest efficiency. By adding the complementary DNA (cDNA), desorption of the absorbed DNA on 2D COF can be achieved. Further, desorption efficiency can also be exchanged by various surfactant in solution. These findings are important for further understanding of the interactions between DNA and COFs and for the optimization of DNA and COF-based devices and sensors.

Recent advances in optical biosensors for specific detection of E. coli bacteria in food and water

Food Control ◽  
2022 ◽  
pp. 108822
Author(s):  
Azam Bagheri Pebdeni ◽  
Amirreza Roshani ◽  
Ensiyeh Mirsadoughi ◽  
Shakila Behzadifar ◽  
Morteza Hosseini
Keyword(s):  
Optical Biosensors ◽  
Specific Detection ◽  
E Coli ◽  
Recent Advances

Fluorescence Properties of Tb-Doped ZnO Porous Network Thin Film Grown on Monocrystalline Silicon Substrate

2018 ◽  
Vol 934 ◽  
pp. 3-7
Author(s):  
Leonid A. Butusov ◽  
Galina K. Chudinova ◽  
Margarita V. Kochneva ◽  
Vladimir V. Kurilkin ◽  
Tatyana F. Sheshko ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Significant Contribution ◽  
Nanostructured Material ◽  
Optical Biosensors ◽  
Porous Network ◽  
Green Phosphor ◽  
Fluorescent Response ◽  
Doped Zno ◽  
New Perspective

This research presents a new perspective on optical biosensors based on zinc oxide nanoparticles. The widely known and successfully applied nanostructured material is modified by the dopant - the green phosphor Terbium, which embedded in the structure of zinc oxide and makes a significant contribution to the fluorescent response of the material in both the UV and visible spectral regions. The effect of various dopant concentrations on the fluorescence of nanostructures was studied; the nanostructures were examined by SEM.

Nanostructured Silicon for Optical Biosensors

2007 ◽  
Author(s):  
Mihaela Miu ◽  
Irina Kleps ◽  
Lorenzo Pavesi ◽  
Florea Craciunoiu ◽  
Teodora Ignat ◽  
...  
Keyword(s):  
Optical Biosensors ◽  
Nanostructured Silicon
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