scholarly journals Real-Time Temperature Detection Via Quantum Dots for Photothermal Cellular Actuation

Proceedings ◽  
2021 ◽  
Vol 56 (1) ◽  
pp. 40
Author(s):  
Wei Yu ◽  
Olivier Deschaume ◽  
Stijn Jooken ◽  
Fanglei Guo ◽  
Pengfei Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Metal Nanoparticles ◽  
Specific Area ◽  
Cell Manipulation ◽  
Structured Illumination ◽  
Temperature Detection ◽  
Optical Heating ◽  
A Cell ◽  
Plasmonic Heating ◽  
Set Up

Plasmonic heating finds multiple applications in cell manipulation and stimulation, where heat generated by metal nanoparticles can be used to modify cell adhesion, control membrane currents, and suppress neuronal action potentials among others. Metal nanoparticles can also be easily integrated in artificial extracellular matrices to provide tunable, thermal cueing functionalities with nanometer spatial resolution. In this contribution, we present a platform enabling the combination of plasmonic heating with localized temperature sensing using quantum dots (QDs). Specifically, a functional nanocomposite material was designed with gold nanorods (AuNRs) and QDs incorporated in a cell-permissive hydrogel (e.g., collagen) as well as an optical set-up combining optical heating and temperature imaging, respectively. Specific area stimulation/readout can be realized through structured illumination using digital micromirror device (DMD) projection.

Trends in Nanotechnology for in vivo Cancer Diagnosis: Products and Patents

2020 ◽  
Vol 26 (18) ◽  
pp. 2167-2181
Author(s):  
Tatielle do Nascimento ◽  
Melanie Tavares ◽  
Mariana S.S.B. Monteiro ◽  
Ralph Santos-Oliveira ◽  
Adriane R. Todeschini ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Quantum Dots ◽  
Magnetic Resonance ◽  
Metal Nanoparticles ◽  
Cancer Diagnosis ◽  
Imaging Techniques ◽  
Tumor Detection ◽  
Abnormal Growth ◽  
Pharmaceutical Nanotechnology

Background: Cancer is a set of diseases formed by abnormal growth of cells leading to the formation of the tumor. The diagnosis can be made through symptoms’ evaluation or imaging tests, however, the techniques are limited and the tumor detection may be late. Thus, pharmaceutical nanotechnology has emerged to optimize the cancer diagnosis through nanostructured contrast agent’s development. Objective: This review aims to identify commercialized nanomedicines and patents for cancer diagnosis. Methods: The databases used for scientific articles research were Pubmed, Science Direct, Scielo and Lilacs. Research on companies’ websites and articles for the recognition of commercial nanomedicines was performed. The Derwent tool was applied for patent research. Results: This article aimed to research on nanosystems based on nanoparticles, dendrimers, liposomes, composites and quantum dots, associated to imaging techniques. Commercialized products based on metal and composite nanoparticles, associated with magnetic resonance and computed tomography, have been observed. The research conducted through Derwent tool displayed a small number of patents using nanotechnology for cancer diagnosis. Among these patents, the most significant number was related to the use of systems based on metal nanoparticles, composites and quantum dots. Conclusion: Although few systems are found in the market and patented, nanotechnology appears as a promising field for the development of new nanosystems in order to optimize and accelerate the cancer diagnosis.

scholarly journals Quick extracellular biosynthesis of low-cadmium ZnxCd1−xS quantum dots with full-visible-region tuneable high fluorescence and its application potential assessment in cell imaging

RSC Advances ◽  
2021 ◽  
Vol 11 (35) ◽  
pp. 21813-21823
Author(s):  
Shiyue Qi ◽  
Ji Chen ◽  
Xianwei Bai ◽  
Yahui Miao ◽  
Shuhui Yang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Saving ◽  
Metal Nanoparticles ◽  
Cell Imaging ◽  
Visible Region ◽  
Extracellular Biosynthesis ◽  
Application Potential ◽  
Good Biocompatibility ◽  
High Fluorescence ◽  
Environmentally Sound

The biosynthesis of metal nanoparticles/QDs has been universally recognized as environmentally sound and energy-saving, generating less pollution and having good biocompatibility, which is most needed in biological and medical fields.

An optical ratiometric temperature sensor based on dopant-dependent thermal equilibrium in dual-emitting Ag&Mn:ZnInS quantum dots

RSC Advances ◽  
2016 ◽  
Vol 6 (63) ◽  
pp. 58113-58117 ◽  
Author(s):  
Guangguang Huang ◽  
Chunlei Wang ◽  
Xiaojing Xu ◽  
Yiping Cui
Keyword(s):  
Quantum Dots ◽  
Optical Sensor ◽  
Temperature Sensor ◽  
Thermal Equilibrium ◽  
Temperature Detection ◽  
Pl Intensity

A novel optical sensor for ratiometric temperature detection is devised via Ag&Mn:ZnInS quantum dots (QDs). The temperature can be read via the PL ratios of Ag-related and Mn-related PL intensity.

Imprinted gold 2D nanoarray for highly sensitive and convenient PSA detection via plasmon excited quantum dots

Lab on a Chip ◽  
2015 ◽  
Vol 15 (1) ◽  
pp. 253-263 ◽  
Author(s):  
Hong Yan Song ◽  
Ten It Wong ◽  
Anton Sadovoy ◽  
Lin Wu ◽  
Ping Bai ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Schematic Representation ◽  
Highly Sensitive ◽  
Set Up

Schematic representation of our immunodetection set-up, which uses a Nikon Ti Eclipse microscope to detect the plasmonic nanochip with quantum dot based bioassay established.

scholarly journals Irrigating Wastewater using RWIS for Treating in Soil-Plant System

2019 ◽  
pp. 31-33
Author(s):  
Dahn Rosenqvist
Keyword(s):  
Municipal Wastewater ◽  
Irrigation System ◽  
Specific Area ◽  
Waste Products ◽  
Plant System ◽  
Set Up ◽  
Controlled Flooding ◽  
Computer Operation ◽  
Natural Purification ◽  
Pilot Tests

In Sweden, large areas of willow plantations designated for energy purposes have been established. Pilot tests, using various waste products from society for fertilisation and/or irrigating purposes, have been carried out at Kagerods wastewater plant since 1992. These tests have clearly shown that recycling of municipal wastewater in Salix plantations, can replace a large part of the conventional wastewater treatment, due to natural purification processes in the soil/plant system. During the last few years, several full-scale treatment plants based on the soil/plant system have been set up. Rosenqvist Mek.Verkstad has developed the irrigation system "RWIS" for distribution of wastewater into the plantation. The system uses a controlled flooding technique, combined with computer operation controlled electric valves placed in the fields. By measuring the flow and having knowledge about the contents of the wastewater, it is possible to have total control over the wastewater that is distributed in a specific area. The irrigation system has to be able to withstand trying conditions, without major maintenance in between harvests.

Occupancy Rights

2019 ◽  
pp. 33-58
Author(s):  
Anna Stilz
Keyword(s):  
Specific Area ◽  
Secure Access ◽  
Set Up ◽  
The Right ◽  
And Control

This chapter outlines the book’s account of foundational title to land, explaining the basis on which certain people have a special claim to live in a specific area, including the right to set up a state that governs that space. It argues that foundational title is a bundle of individual occupancy rights held by the state’s inhabitants. Occupancy rights protect our plan-based interests in the locational continuity of our central life commitments, as well as our more generalized control interest in being the agent in charge of revising and reshaping these commitments. Occupancy confers at least some of the incidents associated with property, including rights to secure access to, use, and control of a particular area. This raises important questions about the kind of right occupancy is meant to be, which are examined in Chapter 3.

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