Recent Advances in Sensor Technology for Biomedical Applications: A Review

Karnik, Niharika; Bhadri, Karan; Dhatrak, Pankaj

doi:10.1007/978-981-19-6913-3_3

Cited by 1 publication

(2 citation statements)

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“…Figure 3 illustrates the system, which encompasses several components involved in the generation and detection of the beat frequency (f B ). The system comprises the following components: a broadband laser source (BBLS) operating in the short wave infrared region (SWIR), which covers the wavelengths of the Fiber Bragg Gratings (FBGs); an optical circulator (OC) for directing the reflected wavelengths from the FBGs to an optical detector (OD); reference and sensing FBGs that reflects dual wavelengths as expressed by equations ( 5) and ( 6); an optical detector (OD) is responsible for detecting the combined wavelengths and producing an alternating photocurrent, as described by equation (7). To eliminate the DC component, a high-pass filter (HPF) is incorporated as the fifth component, as denoted by equation (8).…”

Section: Theoretical Backgroundsmentioning

confidence: 99%

“…This research paper focuses on the development of optical interference sensors that utilize Fiber Bragg Gratings (FBGs) for precise human temperature detection for wound inflammation monitoring. Monitoring human body temperature plays a vital role in detecting fever, monitoring physiological conditions, and ensuring ef-fective healthcare management [7][8][9]. Conventional temperature measurement methods often suffer from limitations in accuracy, slow response times, and invasiveness, necessitating the exploration of advanced sensing technologies.…”

Section: Introductionmentioning

confidence: 99%

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Smart Bandages with Integrated Sensors for Real-Time Monitoring of Wound Inflammation and Infection

Kadhim,

Azzahrani,

Alsheikhy

et al. 2023

Preprint

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Developing fiber bragg grating fiber optic sensors for smart bandages offers significant advantages and has the potential to reform wound care. Smart bandages with FBG enable real-time monitoring of vital wound parameters such as temperature, moisture, and pressure and provide an accurate representation of the wound environment, allowing for immediate intervention if any wound bed complications. Therefore, integrating fiber optic sensors in smart bandages to enhance wound care and monitoring capabilities. It can be embedded directly into the bandage material, allowing for precise and localized measurements at the wound bed. This accuracy is crucial for assessing the healing progress and identifying potential issues. The suggested fiber optic sensor consists of a thin layer of gold coated onto the fiber bragg gratings. The cladding of the FBGs was etched to a thickness of 20µm to optimize the interaction with the chronic wound environment. To enhance the sensing capabilities, the sensing FBG was coated with a 50nm thick layer of gold. The system is configured to monitor changes in the reflected frequencies of the sensing FBG in response to temperature variations in the structure of the FBG in the wound bed. The response of the proposed noninvasive fiber optic sensor as a function of temperature variations within the range of 37.3 to 37.9°C is approximately 34.95 pm/°C. The sensitivity of the generated beat frequency is 4.37GHz, and the variations in the beat frequency as the temperature changes, provide valuable insights into the sensor’s response. FBG with high precision can be feasible for smart bandages and represents a significant advancement in the field of wound care. The use of these sensors supports transforming traditional bandages into intelligent and proactive healthcare solutions.

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Section: Theoretical Backgroundsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%