Exposed-core microstructured fibres for real-time fluorescence sensing

2009 ◽  
Author(s):  
Stephen C. Warren-Smith ◽  
Heike Ebendorff-Heidepriem ◽  
Tze Cheung Foo ◽  
Roger Moore ◽  
Claire Davis ◽  
...  
Keyword(s):  
Real Time ◽  
Fluorescence Sensing

An unprecedented oxidised julolidine-BODIPY conjugate and its application in real-time ratiometric fluorescence sensing of sulfite

2019 ◽  
Vol 17 (31) ◽  
pp. 7360-7368 ◽  
Author(s):  
D. Sirbu ◽  
L. Zeng ◽  
P. G. Waddell ◽  
A. C. Benniston
Keyword(s):  
Real Time ◽  
White Light ◽  
Ratiometric Fluorescence ◽  
Fluorescence Sensing ◽  
Quaternary Nitrogen ◽  
Ratiometric Fluorescence Sensing

Reaction of a julolidine-based BODIPY compound with silver(i) ions in the presence of white light produced the oxidised julolidine version (OXJUL) containing a quaternary nitrogen.

scholarly journals Real-time, continuous, fluorescence sensing in a freely-moving subject with an implanted hybrid VCSEL/CMOS biosensor

2013 ◽  
Vol 4 (8) ◽  
pp. 1332 ◽  
Author(s):  
Thomas D. O’Sullivan ◽  
Roxana T. Heitz ◽  
Natesh Parashurama ◽  
David B. Barkin ◽  
Bruce A. Wooley ◽  
...  
Keyword(s):  
Real Time ◽  
Fluorescence Sensing ◽  
Freely Moving

scholarly journals Real-time fluorescence sensing of single photoactive proteins using silver nanowires

2020 ◽  
Vol 8 (4) ◽  
pp. 045004
Author(s):  
Karolina Sulowska ◽  
Kamil Wiwatowski ◽  
Maciej Ćwierzona ◽  
Joanna Niedziółka-Jönsson ◽  
Sebastian Maćkowski
Keyword(s):  
Real Time ◽  
Silver Nanowires ◽  
Fluorescence Sensing

On-board smartphone micromotor-based fluorescence assays

Lab on a Chip ◽  
2022 ◽  
Author(s):  
Kaisong Yuan ◽  
Victor de la Asunción-Nadal ◽  
Carmen Cuntín Abal ◽  
Beatriz Jurado Sánchez ◽  
Alberto Escarpa
Keyword(s):  
Real Time ◽  
Portable Device ◽  
Fluorescence Sensing ◽  
3D Printed ◽  
Fluorescence Assays

Herein, we describe the design of a portable device integrating micromotors for real-time fluorescence sensing of (bio)markers. The system compromises a universal 3D printed platform to hold a commercial smartphone,...

Cyclops opening-up fiber for real-time fluorescence sensing

2012 ◽  
Author(s):  
Yi Yang ◽  
Guanjun Wang ◽  
Jian Cui
Keyword(s):  
Real Time ◽  
Fluorescence Sensing ◽  
Opening Up

scholarly journals Monitoring Approaches for Faecal Indicator Bacteria in Water: Visioning a Remote Real-Time Sensor for E. coli and Enterococci

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2591
Author(s):  
Kane L. Offenbaume ◽  
Edoardo Bertone ◽  
Rodney A. Stewart
Keyword(s):  
Real Time ◽  
In Situ Monitoring ◽  
Indicator Bacteria ◽  
Fluorescence Sensing ◽  
Faecal Indicator Bacteria ◽  
E Coli ◽  
Current State ◽  
Field Deployment ◽  
Fluorescent Tags ◽  
Contamination Events

A comprehensive review was conducted to assess the current state of monitoring approaches for primary faecal indicator bacteria (FIB) E. coli and enterococci. Approaches were identified and examined in relation to their accuracy, ability to provide continuous data and instantaneous detection results, cost, environmental awareness regarding necessary reagent release or other pollution sources, in situ monitoring capability, and portability. Findings showed that several methods are precise and sophisticated but cannot be performed in real-time or remotely. This is mainly due to their laboratory testing requirements, such as lengthy sample preparations, the requirement for expensive reagents, and fluorescent tags. This study determined that portable fluorescence sensing, combined with advanced modelling methods to compensate readings for environmental interferences and false positives, can lay the foundations for a hybrid FIB sensing approach, allowing remote field deployment of a fleet of networked FIB sensors that can collect high-frequency data in near real-time. Such sensors will support proactive responses to sudden harmful faecal contamination events. A method is proposed to enable the development of the visioned FIB monitoring tool.

Field Test of a Novel Microlaser-Based Probe for in situ Fluorescence Sensing of Soil Contamination

1998 ◽  
Vol 52 (10) ◽  
pp. 1299-1304 ◽  
Author(s):  
Jonathan Bloch ◽  
Bernadette Johnson ◽  
Nathan Newbury ◽  
Jack Germaine ◽  
Harry Hemond ◽  
...  
Keyword(s):  
Real Time ◽  
Contaminated Soils ◽  
Chemical Characterization ◽  
Fluorescence Sensing ◽  
Environmental Media ◽  
Fluorescence Characteristics ◽  
Subsurface Soil ◽  
Contamination Plume ◽  
Btex Compounds

The use of lasers to induce fluorescence in environmental contaminants such as fuels offers the potential for real-time, in situ chemical characterization in a variety of environmental media. This paper describes the first reported use of a passively Q-switched, fiber-coupled microlaser in situ for fuel-contamination characterization in subsurface soil. A 266 nm microlaser-based probe mounted in a cone penetrometer was tested at an area contaminated by both aviation and heating fuels. By examining the spectral and temporal fluorescence characteristics as the probe was pushed into soil, we identified BTEX compounds, as well as moderate-weight and heavy aromatic hydrocarbons, and were able to map an underground contamination plume in real time. Specifically, BTEX compounds were identified by their unique fluorescence signatures (wavelengths less than approximately 315 nm and lifetimes less than 7 to 10 ns) and by comparison with extensive laboratory studies of BTEX and fuel-contaminated soils. These tests demonstrate that the microlaser-based probe offers the potential for in situ, real-time characterization of soils and groundwater in a compact, inexpensive package.

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