Optical fiber smartphone spectrometer

Ma, Hui; Canning, John; Cook, Kevin; Jamalipour, Abbas

doi:10.1364/ol.41.002237

Cited by 89 publications

(56 citation statements)

References 24 publications

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“…This problem exacerbates when the system must be portable and easily attached to a smartphone. This was addressed in a study using a fibre‐optic bundle to direct light from the smartphones flash directly onto the sample . The light from the sample was then delivered by an endoscopic fibre bundle for diffraction grating.…”

Section: Smartphone‐based Imaging Technologiesmentioning

confidence: 99%

Smartphone‐based clinical diagnostics: towards democratization of evidence‐based health care

et al. 2018

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Recent advancements in bioanalytical techniques have led to the development of novel and robust diagnostic approaches that hold promise for providing optimal patient treatment, guiding prevention programs and widening the scope of personalized medicine. However, these advanced diagnostic techniques are still complex, expensive and limited to centralized healthcare facilities or research laboratories. This significantly hinders the use of evidence-based diagnostics for resource-limited settings and the primary care, thus creating a gap between healthcare providers and patients, leaving these populations without access to precision and quality medicine. Smartphone-based imaging and sensing platforms are emerging as promising alternatives for bridging this gap and decentralizing diagnostic tests offering practical features such as portability, cost-effectiveness and connectivity. Moreover, towards simplifying and automating bioanalytical techniques, biosensors and lab-on-a-chip technologies have become essential to interface and integrate these assays, bringing together the high precision and sensitivity of diagnostic techniques with the connectivity and computational power of smartphones. Here, we provide an overview of the emerging field of clinical smartphone diagnostics and its contributing technologies, as well as their wide range of areas of application, which span from haematology to digital pathology and rapid infectious disease diagnostics.

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Section: Smartphone‐based Imaging Technologiesmentioning

confidence: 99%

Smartphone‐based clinical diagnostics: towards democratization of evidence‐based health care

et al. 2018

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“…And it will be possible to realize the interchange between the optical signal and the electric signal within the specialty fiber. An electric-compatible platform is always more convenient than an optic platform, because ultimately the readout system in any sensor is an electric component.The sensor can be compatible with mobile devices [48] and can be wearable [49]. …”

Section: Specialty Fibers For Sensing Applicationsmentioning

confidence: 99%

Roadmap on optical sensors

Ferreira

Castro-Camus

Ottaway

et al. 2017

J. Opt.

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Sensors are devices or systems able to detect, measure and convert magnitudes from any domain to an electrical one. Using light as a probe for optical sensing is one of the most efficient approaches for this purpose. The history of optical sensing using some methods based on absorbance, emissive and florescence properties date back to the 16th century. The field of optical sensors evolved during the following centuries, but it did not achieve maturity until the demonstration of the first laser in 1960. The unique properties of laser light become particularly important in the case of laser-based sensors, whose operation is entirely based upon the direct detection of laser light itself, without relying on any additional mediating device. However, compared with freely propagating light beams, artificially engineered optical fields are in increasing demand for probing samples with very small sizes and/or weak light–matter interaction. Optical fiber sensors constitute a subarea of optical sensors in which fiber technologies are employed. Different types of specialty and photonic crystal fibers provide improved performance and novel sensing concepts. Actually, structurization with wavelength or subwavelength feature size appears as the most efficient way to enhance sensor sensitivity and its detection limit. This leads to the area of micro- and nano-engineered optical sensors. It is expected that the combination of better fabrication techniques and new physical effects may open new and fascinating opportunities in this area. This roadmap on optical sensors addresses different technologies and application areas of the field. Fourteen contributions authored by experts from both industry and academia provide insights into the current state-of-the-art and the challenges faced by researchers currently. Two sections of this paper provide an overview of laser-based and frequency comb-based sensors. Three sections address the area of optical fiber sensors, encompassing both conventional, specialty and photonic crystal fibers. Several other sections are dedicated to micro- and nano-engineered sensors, including whispering-gallery mode and plasmonic sensors. The uses of optical sensors in chemical, biological and biomedical areas are described in other sections. Different approaches required to satisfy applications at visible, infrared and THz spectral regions are also discussed. Advances in science and technology required to meet challenges faced in each of these areas are addressed, together with suggestions on how the field could evolve in the near future.

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“…Over the last decade, smartphones have been increasingly used in a variety of scientific fields as spectrometers [18][19][20][21][22] and colorimeters [23][24][25]. Smartphone spectrometers use the wavelength components, which give spectral information, of the collimated light from the optical source which is dispersed after interaction with samples [18]. The color spectrum image is transformed into various color spaces for the extraction of quantitative data.…”

Section: Introductionmentioning

confidence: 99%

“…To detect miRNA sequences in a liquid-based assay, a smartphone-based fluorimeter system was designed using an external laser as the source [21]. Due to precise light confinement and flexible nature, optical fibers were integrated to smartphone spectrometer and applied for food quality monitoring [18]. To have more portable and cheap spectrometers, new designs were proposed without external electrical and optical components.…”

Section: Introductionmentioning

confidence: 99%

From Sophisticated Analysis to Colorimetric Determination: Smartphone Spectrometers and Colorimetry

Kılıç¹,

Horzum²,

Solmaz³

2020

Color Detection

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Smartphone-based spectrometer and colorimetry have been gaining relevance due to the widespread advances of devices with increasing computational power, their relatively low cost and portable designs with user-friendly interfaces, and their compatibility with data acquisition and processing for "lab-on-a-chip" systems. They find applications in interdisciplinary fields, including but not limited to medical science, water monitoring, agriculture, and chemical and biological sensing. However, spectrometer and colorimetry designs are challenging tasks in real-life scenarios as several distinctive issues influence the quantitative evaluation process, such as ambient light conditions and device independence. Several approaches have been proposed to overcome the aforementioned challenges and to enhance the performance of smartphone-based colorimetric analysis. This chapter aims at providing researchers with a state-of-the-art overview of smartphone-based spectrometer and colorimetry, which includes hardware designs with 3D printers and sensors and software designs with image processing algorithms and smartphone applications. In addition, assay preparation to mimic the real-life testing environments and performance metrics for quantitative evaluation of proposed designs are presented with the list of new and future trends in this field.

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Optical fiber smartphone spectrometer

Cited by 89 publications

References 24 publications

Smartphone‐based clinical diagnostics: towards democratization of evidence‐based health care

Smartphone‐based clinical diagnostics: towards democratization of evidence‐based health care

Roadmap on optical sensors

From Sophisticated Analysis to Colorimetric Determination: Smartphone Spectrometers and Colorimetry

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