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Boisvert JS, Loranger S, Kashyap R. Fs laser written volume Raman-Nath grating for integrated spectrometer on smartphone. Sci Rep 2023; 13:13717. [PMID: 37608059 PMCID: PMC10444826 DOI: 10.1038/s41598-023-40909-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 08/18/2023] [Indexed: 08/24/2023] Open
Abstract
In this work we demonstrate the integration of a spectrometer directly into smartphone screen by femtosecond laser inscription of a weak Raman-Nath volume grating either into the Corning Gorilla glass screen layer or in the tempered aluminosilicate glass protector screen placed in front of the phone camera. Outside the thermal accumulation regime, a new writing regime yielding positive refractive index change was found for both glasses which is fluence dependent. The upper-bound threshold for this thermal-accumulation-less writing regime was found for both glasses and were, respectively at a repetition rate less than 150 kHz and 101 kHz for fluence of 8.7 × 106 J/m2 and 1.4 × 107 J/m2. A weak volume Raman-Nath grating of dimension 0.5 by 3 mm and 3 μm pitch was placed in front of a Samsung Galaxy S21 FE cellphone to record the spectrum using the 2nd diffraction order. This spectrometer covers the visible band from 401 to 700 nm with a 0.4 nm/pixel detector resolution and 3 nm optical resolution. It was used to determine the concentration detection limit of Rhodamine 6G in water which was found to be 0.5 mg/L. This proof of concept paves the way to in-the-field absorption spectroscopy for quick information gathering.
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Affiliation(s)
- Jean-Sébastien Boisvert
- Department of Engineering Physics, Ecole Polytechnique Montréal, 2900 Édouard-Montpetit, Montreal, QC, H3T 1J4, Canada.
| | - Sébastien Loranger
- Department of Electrical Engineering, Poly-Grames, Ecole Polytechnique Montréal, 2900 Édouard-Montpetit, Montreal, QC, H3T 1J4, Canada
| | - Raman Kashyap
- Department of Engineering Physics, Ecole Polytechnique Montréal, 2900 Édouard-Montpetit, Montreal, QC, H3T 1J4, Canada
- Department of Electrical Engineering, Poly-Grames, Ecole Polytechnique Montréal, 2900 Édouard-Montpetit, Montreal, QC, H3T 1J4, Canada
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Patil V, Singhal DK, Naik N, Hameed BMZ, Shah MJ, Ibrahim S, Smriti K, Chatterjee G, Kale A, Sharma A, Paul R, Chłosta P, Somani BK. Factors Affecting the Usage of Wearable Device Technology for Healthcare among Indian Adults: A Cross-Sectional Study. J Clin Med 2022; 11:jcm11237019. [PMID: 36498594 PMCID: PMC9740494 DOI: 10.3390/jcm11237019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/18/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Wearable device technology has recently been involved in the healthcare industry substantially. India is the world's third largest market for wearable devices and is projected to expand at a compound annual growth rate of ~26.33%. However, there is a paucity of literature analyzing the factors determining the acceptance of wearable healthcare device technology among low-middle-income countries. METHODS This cross-sectional, web-based survey aims to analyze the perceptions affecting the adoption and usage of wearable devices among the Indian population aged 16 years and above. RESULTS A total of 495 responses were obtained. In all, 50.3% were aged between 25-50 years and 51.3% belonged to the lower-income group. While 62.2% of the participants reported using wearable devices for managing their health, 29.3% were using them daily. technology and task fitness (TTF) showed a significant positive correlation with connectivity (r = 0.716), health care (r = 0.780), communication (r = 0.637), infotainment (r = 0.598), perceived usefulness (PU) (r = 0.792), and perceived ease of use (PEOU) (r = 0.800). Behavioral intention (BI) to use wearable devices positively correlated with PEOU (r = 0.644) and PU (r = 0.711). All factors affecting the use of wearable devices studied had higher mean scores among participants who were already using wearable devices. Male respondents had significantly higher mean scores for BI (p = 0.034) and PEOU (p = 0.009). Respondents older than 25 years of age had higher mean scores for BI (p = 0.027) and Infotainment (p = 0.032). CONCLUSIONS This study found a significant correlation with the adoption and acceptance of wearable devices for healthcare management in the Indian context.
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Affiliation(s)
- Vathsala Patil
- Department of Oral Medicine and Radiology, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Deepak Kumar Singhal
- Department of Public Health Dentistry, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
- Correspondence: (D.K.S.); (N.N.); Tel.: +91-8310874339 (N.N.)
| | - Nithesh Naik
- Department of Mechanical and Industrial Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
- iTRUE (International Training and Research in Uro-Oncology and Endourology) Group, Manipal 576104, Karnataka, India
- Curiouz TechLab Private Limited, BIRAC-BioNEST, Government of Karnataka Bioincubator, Manipal 576104, Karnataka, India
- Correspondence: (D.K.S.); (N.N.); Tel.: +91-8310874339 (N.N.)
| | - B. M. Zeeshan Hameed
- iTRUE (International Training and Research in Uro-Oncology and Endourology) Group, Manipal 576104, Karnataka, India
- Curiouz TechLab Private Limited, BIRAC-BioNEST, Government of Karnataka Bioincubator, Manipal 576104, Karnataka, India
- Department of Urology, Father Muller Medical College, Mangalore 575001, Karnataka, India
| | - Milap J. Shah
- iTRUE (International Training and Research in Uro-Oncology and Endourology) Group, Manipal 576104, Karnataka, India
- Robotics and Urooncology, Max Hospital and Max Institute of Cancer Care, New Delhi 110024, India
| | - Sufyan Ibrahim
- iTRUE (International Training and Research in Uro-Oncology and Endourology) Group, Manipal 576104, Karnataka, India
- Department of Neurosurgery, Mayo Clinic, Rochester, MN 55902, USA
| | - Komal Smriti
- Department of Oral Medicine and Radiology, Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Gaurav Chatterjee
- Department of Electrical and Electronics Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Ameya Kale
- Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Anshika Sharma
- Department of Psychology, Amity University, Noida 201313, Uttar Pradesh, India
| | - Rahul Paul
- iTRUE (International Training and Research in Uro-Oncology and Endourology) Group, Manipal 576104, Karnataka, India
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02115, USA
- Center for Biologics Evaluation and Research (CBER), U.S. Food and Drug Administration, Silver Spring, MD 20993, USA
| | - Piotr Chłosta
- Department of Urology, Jagiellonian University in Krakow, 31-007 Kraków, Poland
| | - Bhaskar K. Somani
- Department of Urology, University Hospital Southampton NHS Trust, Southampton SO16 6YD, UK
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Guo L, Zhao DM, Chen S, Yu YL, Wang JH. Smartphone-Integrated Photoacoustic Analytical Device for Point-of-Care Testing of Food Contaminant Azodicarbonamide. Anal Chem 2022; 94:14004-14011. [PMID: 36166592 DOI: 10.1021/acs.analchem.2c03319] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Azodicarbonamide (ADA) is widely used as a flour additive due to its oxidizing and bleaching properties, but it reacts with wet flour during heat processing and is easily decomposed into semicarbazide with genotoxicity and carcinogenicity. In order to improve the efficiency of food safety supervision and expand the scope of food safety control, it is of great significance to develop a facile method for point-of-care testing (POCT) of ADA. Herein, a field-portable and universal smartphone-based photoacoustic (PA) integration device is constructed for quantitative POCT of ADA in flour. The recognition probe Prussian blue with favorable stability is loaded on a flexible substrate for fabricating a portable test strip. In the presence of target ADA, the PA signal changes driven by a modulated 808 nm laser beam can be conveniently collected through the recording application (Audio Lab) of the smartphone. By combining the economic test strip and portable PA device with smartphone readout, it not only greatly simplifies the operation steps but also dramatically reduces the size and cost of the instrument. There is a favorable linear relationship between the PA signal and ADA concentration in the range of 10-200 μmol L-1 (R2 = 0.9928), and a detection limit of 5 μmol L-1 obtained is much lower than the maximum allowable ADA level in the extract of flour (388 μmol L-1). The present miniature PA device with strong POCT ability holds enormous public health significance and economic value in the field of food safety, especially in resource-limited settings.
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Affiliation(s)
- Lan Guo
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China
| | - Dong-Mei Zhao
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China
| | - Shuai Chen
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China
| | - Yong-Liang Yu
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China
| | - Jian-Hua Wang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, China
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