Electronicautocollimators

N2 - Stress is a widely spread phenomenon in the modern society. Only work-related stress was estimated to cost US companies more than $300 billion a year in healthcare costs, absences and decreased performance. Early diagnosis of stress conditions and therefore improved recovery and reduced costs could potentially be achieved with continuous monitoring of stress biomarkers using wearable devices. Compared to the conventional electrochemical and optical sensing methods used in current wearable devices, plasmonic sensing could offer higher sensitivity, better stability and faster data collection. Our developed plasmonic sensor chip represents a nanograting structured polymer on a silicon substrate, covered with gold. The sensing method is based on detecting a surface plasmon resonance wavelength shift due to refractive index change caused by presence of analytes in the vicinity of the plasmonic grating. The sensitivity of the chip was tested with two different stress-related biomarkers: cortisol and creatinine. With the tested range from 0 to 265 mM, in the current version of the system, without a receptor layer, the detection limits for cortisol and creatinine were 10.65 and 7.09 mM, respectively, which are close to the physiological ranges of these analytes in body fluids. When integrated into a wearable device, this approach has a potential in future healthcare applications paving the way to continuous stress monitoring.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Autocollimator price

Stress is a widely spread phenomenon in the modern society. Only work-related stress was estimated to cost US companies more than $300 billion a year in healthcare costs, absences and decreased performance. Early diagnosis of stress conditions and therefore improved recovery and reduced costs could potentially be achieved with continuous monitoring of stress biomarkers using wearable devices. Compared to the conventional electrochemical and optical sensing methods used in current wearable devices, plasmonic sensing could offer higher sensitivity, better stability and faster data collection. Our developed plasmonic sensor chip represents a nanograting structured polymer on a silicon substrate, covered with gold. The sensing method is based on detecting a surface plasmon resonance wavelength shift due to refractive index change caused by presence of analytes in the vicinity of the plasmonic grating. The sensitivity of the chip was tested with two different stress-related biomarkers: cortisol and creatinine. With the tested range from 0 to 265 mM, in the current version of the system, without a receptor layer, the detection limits for cortisol and creatinine were 10.65 and 7.09 mM, respectively, which are close to the physiological ranges of these analytes in body fluids. When integrated into a wearable device, this approach has a potential in future healthcare applications paving the way to continuous stress monitoring.

Autocollimatorsfor sale

Conclusion: Autocollimators are indispensable tools in various industries where precise angular measurements are essential. With continuous advancements in technology, autocollimators are becoming more accurate, versatile, and user-friendly, further expanding their applications in metrology, alignment, and optical testing. As industries demand higher levels of precision, autocollimators will continue to evolve to meet these requirements, driving innovation in measurement and instrumentation technologies.

We use cookies to help provide and enhance our service and tailor content. By continuing you agree to the use of cookies

Autocollimator telescope

LinkedIn and 3rd parties use essential and non-essential cookies to provide, secure, analyze and improve our Services, and to show you relevant ads (including professional and job ads) on and off LinkedIn. Learn more in our Cookie Policy.

All content on this site: Copyright © 2024 Elsevier B.V. or its licensors and contributors. All rights are reserved, including those for text and data mining, AI training, and similar technologies. For all open access content, the Creative Commons licensing terms apply

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

AB - Stress is a widely spread phenomenon in the modern society. Only work-related stress was estimated to cost US companies more than $300 billion a year in healthcare costs, absences and decreased performance. Early diagnosis of stress conditions and therefore improved recovery and reduced costs could potentially be achieved with continuous monitoring of stress biomarkers using wearable devices. Compared to the conventional electrochemical and optical sensing methods used in current wearable devices, plasmonic sensing could offer higher sensitivity, better stability and faster data collection. Our developed plasmonic sensor chip represents a nanograting structured polymer on a silicon substrate, covered with gold. The sensing method is based on detecting a surface plasmon resonance wavelength shift due to refractive index change caused by presence of analytes in the vicinity of the plasmonic grating. The sensitivity of the chip was tested with two different stress-related biomarkers: cortisol and creatinine. With the tested range from 0 to 265 mM, in the current version of the system, without a receptor layer, the detection limits for cortisol and creatinine were 10.65 and 7.09 mM, respectively, which are close to the physiological ranges of these analytes in body fluids. When integrated into a wearable device, this approach has a potential in future healthcare applications paving the way to continuous stress monitoring.

Autocollimator Working principle

Digital Autocollimators: Traditional autocollimators relied on analog measurements. However, recent advancements have led to the development of digital autocollimators, which offer higher precision, automated data logging, and compatibility with computerized systems. Multi-Axis Autocollimators: Some modern autocollimators are capable of measuring angular displacements in multiple axes simultaneously, allowing for more comprehensive alignment and calibration procedures. Enhanced Sensitivity: Ongoing research aims to improve the sensitivity of autocollimators, enabling the measurement of even smaller angular deviations with higher accuracy. Integration with Automation: Autocollimators are being integrated into automated systems for real-time monitoring and adjustment, facilitating efficient and precise manufacturing processes.

Anni Ranta-Lassila* (Corresponding author), Duc Le, Teemu Sipola, Mikko Karppinen, Jarno Petäjä, Minna Kehusmaa, Sanna Aikio, Tian Long Guo, Matthieu Roussey, Jussi Hiltunen, Alexey Popov*Corresponding author for this work

Metrology: Autocollimators are extensively used in metrology for measuring small angular deviations, such as those in precision machining and alignment of optical components. Alignment: In manufacturing and assembly processes, autocollimators ensure precise alignment of components, such as in the alignment of laser systems. Optical Testing: Autocollimators are employed in optical testing setups to measure the alignment and quality of optical elements like lenses and mirrors. Aerospace and Defense: Autocollimators play a crucial role in aerospace and defense applications for alignment and calibration of optical systems in aircraft, spacecraft, and military equipment.

Select Accept to consent or Reject to decline non-essential cookies for this use. You can update your choices at any time in your settings.