Insert-mounted thin film sensors for real-time monitoring of tool conditions

1988 ◽  
Vol 166 ◽  
pp. 387-395 ◽  
Author(s):  
W.P. Robbins ◽  
B. Bischoff ◽  
S. Ramalingen
Keyword(s):  
Thin Film ◽  
Real Time ◽  
Real Time Monitoring ◽  
Thin Film Sensors

Halochromic optical nose for assessment of spoilage of packed seer fish

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Kesavan Devarayan ◽  
Kopperundevi Sivakami Nagaraju ◽  
Padmavathi Pandiyan
Keyword(s):  
Thin Film ◽  
Real Time ◽  
Design Methodology ◽  
Real Time Monitoring ◽  
Content Type ◽  
Color Changes ◽  
Thin Film Sensors ◽  
Unique Color ◽  
Indicator Dyes ◽  
Seer Fish

Purpose The present study aims to describe the development of halochromic thin film sensors using mixed indicator dyes for monitoring the spoilage of packed seer fish. Design/methodology/approach Thin film was prepared using renewable polysaccharide incorporated with mixed indicator dyes. The thin film was characterized using ultraviolet visible and Fourier transform-infrared spectroscopy. The characteristics of the thin film were studied by analyzing the CIELAB and Red Green Blue values and biodegradability. The thin films were evaluated for real-time monitoring of the spoilage of packed seer fish. Findings The thin film sensors were found to exhibit excellent halochromism. The color changes were visible and distinguishable. The sensors responded efficiently for real-time monitoring of spoilage of fish by showing unique color changes. Originality/value This study provides promising mixed indicator that exhibits different colors in the alkaline pH. Also the present study reveals a potential combination of materials for preparation of halochromic sensors that can be used for monitoring the spoilage of packed seer fish in real time.

Halochromic optical nose for assessment of spoilage of packed seer fish (II): leaching resistance, correlation between halochromism and volatile amines

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Kesavan Devarayan ◽  
Padmavathi P. ◽  
Kopperundevi Sivakami Nagaraju
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Real Time ◽  
Total Volatile ◽  
Real Time Monitoring ◽  
Content Type ◽  
Color Changes ◽  
Thin Film Sensors ◽  
Ft Ir ◽  
Volatile Amines

Purpose Development of thin film sensors with pH function for noninvasive real-time monitoring of spoilage of packed seafood such as fish, crab and shrimp are described in this study. It is also the purpose of this study to enhance the leaching resistance of the sensors by using a suitable strategy and to quantitatively correlate the sensor’s halochromism with the total volatile amine. Design/methodology/approach To prepare halochromic sensors with better leaching resistance, biocompatible materials such as starch, agar, polyvinyl alcohol and cellulose acetate along with a halochromic dye were used to prepare the thin film sensors. These thin films were evaluated for monitoring the spoilage of packed seafood at room temperature, 4°C and −2°C up to 30 days. The halochromic sensors were characterized using UV-visible and FT-IR spectroscopy. Findings CIELab analyses of the halochromism of the thin film sensors revealed that the color changes exhibited by the sensors in response to the spoilage of seafood are visually distinguishable. Further, the halochromic response of the thin films was directly proportional to the amount of total volatile base nitrogen that evolved from the packed seafood. Excellent leaching resistance was observed for the developed thin film sensors. The halochromic property of the sensors is reversible and thus the sensors are recyclable. Besides, the thin film sensors exhibited significant biodegradability. Originality/value This study provides insights for use of different biocompatible polymers for obtaining enhanced leaching resistance in halochromic sensors. Further, the color changes exhibited by the sensors are in line with the total volatile amines evolved from the packed seafood. These results highlight the importance of the developed halochromic thin film sensors for real-time monitoring of the spoilage of packed seafood.

Real-time monitoring of trap dynamics reveals the electronic states that limit charge transport in crystalline organic semiconductors

2020 ◽  
Vol 7 (9) ◽  
pp. 2390-2398
Author(s):  
Hamna F. Iqbal ◽  
Emma K. Holland ◽  
John E. Anthony ◽  
Oana D. Jurchescu
Keyword(s):  
Thin Film ◽  
Charge Transport ◽  
Real Time ◽  
Organic Semiconductors ◽  
Thin Film Transistors ◽  
Electronic States ◽  
Organic Thin Film Transistors ◽  
Organic Thin Film ◽  
Real Time Monitoring

Access to the dynamics of trap annihilation/generation resulting from isomer rearrangement identifies the performance-limiting processes in organic thin-film transistors.

scholarly journals Regenerable Bead-Based Microfluidic Device with integrated THIN-Film Photodiodes for Real Time Monitoring of DNA Detection

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 953
Author(s):  
Catarina R. F. Caneira ◽  
Denis R. Santos ◽  
Virginia Chu ◽  
João P. Conde
Keyword(s):  
Thin Film ◽  
Real Time ◽  
Microfluidic Device ◽  
Low Cost ◽  
High Sensitivity ◽  
Significant Loss ◽  
Real Time Monitoring ◽  
Target Dna ◽  
On Chip ◽  
Biosensing System

Nanoporous microbead-based microfluidic systems for biosensing applications allow enhanced sensitivities, while being low cost and amenable for miniaturization. The regeneration of the microfluidic biosensing system results in a further decrease in costs while the integration of on-chip signal transduction enhances portability. Here, we present a regenerable bead-based microfluidic device, with integrated thin-film photodiodes, for real-time monitoring of molecular recognition between a target DNA and complementary DNA (cDNA). High-sensitivity assay cycles could be performed without significant loss of probe DNA density and activity, demonstrating the potential for reusability, portability and reproducibility of the system.

scholarly journals Polarization-dependent differential reflectance spectroscopy for real-time monitoring of organic thin film growth

2015 ◽  
Vol 86 (11) ◽  
pp. 113108 ◽  
Author(s):  
A. Navarro-Quezada ◽  
M. Aiglinger ◽  
E. Ghanbari ◽  
Th. Wagner ◽  
P. Zeppenfeld
Keyword(s):  
Thin Film ◽  
Real Time ◽  
Film Growth ◽  
Reflectance Spectroscopy ◽  
Thin Film Growth ◽  
Organic Thin Film ◽  
Real Time Monitoring

scholarly journals REAL-TIME MONITORING OF CELL CULTURES WITH NICKEL COMB CAPACITORS

2020 ◽  
Vol 10 (2) ◽  
pp. 32-35
Author(s):  
Andrzej Kociubiński ◽  
Dawid Zarzeczny ◽  
Maciej Szypulski ◽  
Aleksandra Wilczyńska ◽  
Dominika Pigoń ◽  
...  
Keyword(s):  
Thin Film ◽  
Cell Culture ◽  
Magnetron Sputtering ◽  
Real Time ◽  
Cell Cultures ◽  
Measurement Technique ◽  
Impedance Measurement ◽  
Real Time Monitoring ◽  
Experimental Part ◽  
Cells Cultured

The aim of the study was to present a method for assessing the condition of cell culture by measuring the impedance of cells cultured in the presence of nickel. For this purpose, an impedance measurement technique using nickel comb capacitors was used. The capacitor electrodes were made using a thin film magnetron sputtering. In the experimental part, the culture of cells of mouse fibroblasts on the prepared substrate was performed. The cell culture lasted 43 hours and showed that the presented technique allows it to be used to analyze the effect of nickel on cells.

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