Skip Content
You are currently on the new version of our website. Access the old version .

4,165 Results Found

  • Article
  • Open Access
11 Citations
4,662 Views
24 Pages

Light-Based IoT: Developing a Full-Duplex Energy Autonomous IoT Node Using Printed Electronics Technology

  • Malalgodage Amila Nilantha Perera,
  • Marcos Katz,
  • Juha Häkkinen and
  • Roshan Godaliyadda

1 December 2021

The light-based Internet of things (LIoT) concept defines nodes that exploit light to (a) power up their operation by harvesting light energy and (b) provide full-duplex wireless connectivity. In this paper, we explore the LIoT concept by designing,...

  • Review
  • Open Access
11 Citations
5,137 Views
24 Pages

Visible Light Photochemical Reactions for Nucleic Acid-Based Technologies

  • Bonwoo Koo,
  • Haneul Yoo,
  • Ho Jeong Choi,
  • Min Kim,
  • Cheoljae Kim and
  • Ki Tae Kim

21 January 2021

The expanding scope of chemical reactions applied to nucleic acids has diversified the design of nucleic acid-based technologies that are essential to medicinal chemistry and chemical biology. Among chemical reactions, visible light photochemical rea...

  • Article
  • Open Access
1 Citations
1,712 Views
15 Pages

Therapeutic Efficacy of Ultraviolet C Light on Fungal Keratitis—In Vitro and Ex Vivo Studies

  • Mark A. Bosman,
  • Jennifer P. Craig,
  • Simon Swift,
  • Simon J. Dean and
  • Sanjay Marasini

Objective: Fungal corneal infections are challenging to treat due to delayed diagnostic procedures, bacterial co-infections, and limited antifungal efficacy. This study investigates the therapeutic potential of ultraviolet C (UVC) light alone and com...

  • Systematic Review
  • Open Access
15 Citations
9,654 Views
30 Pages

The Diagnostic Potential of Non-Invasive Tools for Oral Cancer and Precancer: A Systematic Review

  • Tania Vanessa Pierfelice,
  • Emira D’Amico,
  • Chiara Cinquini,
  • Giovanna Iezzi,
  • Camillo D’Arcangelo,
  • Simonetta D’Ercole and
  • Morena Petrini

13 September 2024

Objectives: This systematic review aimed to analyse the published evidence for the use of non-invasive methods for the early detection of oral squamous cell carcinoma (OSCC) and oral potentially malignant disorders (OPMDs). Methods: The literature wa...

  • Article
  • Open Access
13 Citations
4,667 Views
19 Pages

On-Site Soil Monitoring Using Photonics-Based Sensors and Historical Soil Spectral Libraries

  • Konstantinos Karyotis,
  • Nikolaos L. Tsakiridis,
  • Nikolaos Tziolas,
  • Nikiforos Samarinas,
  • Eleni Kalopesa,
  • Periklis Chatzimisios and
  • George Zalidis

17 March 2023

In-situ infrared soil spectroscopy is prone to the effects of ambient factors, such as moisture, shadows, or roughness, resulting in measurements of compromised quality, which is amplified when multiple sensors are used for data collection. Aiming to...

  • Article
  • Open Access
3 Citations
1,833 Views
22 Pages

Silicon substrate golden light LED, as an emerging blue-light-free health lighting technology, has become one of the key technologies for home health lighting environments. This study uses silicon substrate golden light LED as the lighting source for...

  • Article
  • Open Access
30 Citations
9,958 Views
21 Pages

18 January 2021

In this study, for the application of visible-light wearable eye trackers, a pupil tracking methodology based on deep-learning technology is developed. By applying deep-learning object detection technology based on the You Only Look Once (YOLO) model...

  • Article
  • Open Access
8 Citations
2,780 Views
8 Pages

18 April 2021

Compared with the current mature point scanning metal additive manufacturing technology, the surface exposure technology by laser additive manufacturing can accelerate the construction speed, and the short pulse laser is expected to improve the resol...

  • Article
  • Open Access
7 Citations
6,609 Views
24 Pages

Product Assembly Assistance System Based on Pick-To-Light and Computer Vision Technology

  • Darko Hercog,
  • Primož Bencak,
  • Uroš Vincetič and
  • Tone Lerher

13 December 2022

Product assembly is often one of the last steps in the production process. Product assembly is often carried out by workers (assemblers) rather than robots, as it is generally challenging to adapt automation to any product. When assembling complex pr...

  • Article
  • Open Access
39 Citations
13,058 Views
20 Pages

A Model to Improve the Implementation Standards of Street Lighting Based on Solar Energy: A Case Study

  • Wahyudi Sutopo,
  • Ika Shinta Mardikaningsih,
  • Roni Zakaria and
  • Ahad Ali

3 February 2020

This paper aims to improve the implementation standards of solar-energy-based street lighting in Indonesia. A model framework was developed to assess existing conditions regarding the level of lux, the distance between poles, pole height, and lamp po...

  • Article
  • Open Access
3 Citations
2,351 Views
15 Pages

23 July 2021

This paper aims to study the porous structure and the mechanical properties of fly-ash-based light-weighted porous geopolymer (FBLPG), exploring the feasibility of using it in roof-adaptive end filling technology based on its in-situ foaming characte...

  • Review
  • Open Access
81 Citations
14,673 Views
30 Pages

8 September 2020

SARS-CoV-2 is a single-stranded RNA virus classified in the family Coronaviridae. In this review, we summarize the literature on light-based (UV, blue, and red lights) sanitization methods for the inactivation of ssRNA viruses in different matrixes (...

  • Review
  • Open Access
29 Citations
6,024 Views
35 Pages

30 November 2023

The emergence of additive manufacturing, commonly referred to as 3D printing, has led to a revolution in the field of biofabrication. Numerous types of 3D bioprinting, including extrusion bioprinting, inkjet bioprinting, and lithography-based bioprin...

  • Article
  • Open Access
86 Citations
3,981 Views
9 Pages

Dynamically Tunable Light Absorbers as Color Filters Based on Electrowetting Technology

  • Jun Wu,
  • Yaqiong Du,
  • Jun Xia,
  • Tong Zhang,
  • Wei Lei and
  • Baoping Wang

6 January 2019

A device that uses the electrowetting fluid manipulation technology to realize the reversible and dynamical modulation of the local surface plasmon resonance is invented. By varying the electrowetting voltage, the distribution of fluids media surroun...

  • Review
  • Open Access
19 Citations
10,079 Views
15 Pages

Use of Digital Diagnostic Aids for Initial Caries Detection: A Review

  • Emma Kay Chan,
  • Yuet Ying Wah,
  • Walter Yu-Hang Lam,
  • Chun-Hung Chu and
  • Ollie Yiru Yu

28 September 2023

The advance in digital diagnostic technologies has significantly facilitated the detection of dental caries. Despite the increase in clinically available digital diagnostic aids for dental caries, there is yet to be a comprehensive summary of all ava...

  • Article
  • Open Access
3 Citations
2,125 Views
17 Pages

29 June 2025

Three-dimensional (3D) reconstruction measurement technology utilizing line-structured light offers non-contact operation, making it widely applicable in industrial production. An effective scanning-direction calibration method in a line-structured l...

  • Feature Paper
  • Article
  • Open Access
19 Citations
5,621 Views
15 Pages

Low-Cost Light-Based GelMA 3D Bioprinting via Retrofitting: Manufacturability Test and Cell Culture Assessment

  • Juan Enrique Pérez-Cortez,
  • Víctor Hugo Sánchez-Rodríguez,
  • Salvador Gallegos-Martínez,
  • Cristina Chuck-Hernández,
  • Ciro A. Rodriguez,
  • Mario Moises Álvarez,
  • Grissel Trujillo-de Santiago,
  • Elisa Vázquez-Lepe and
  • J. Israel Martínez-López

25 December 2022

Light-based bioprinter manufacturing technology is still prohibitively expensive for organizations that rely on accessing three-dimensional biological constructs for research and tissue engineering endeavors. Currently, most of the bioprinting system...

  • Review
  • Open Access
10 Citations
4,217 Views
17 Pages

Managing Corneal Infections: Out with the old, in with the new?

  • Sanjay Marasini,
  • Jennifer P. Craig,
  • Simon J. Dean and
  • Leon G. Leanse

There have been multiple reports of eye infections caused by antibiotic-resistant bacteria, with increasing evidence of ineffective treatment outcomes from existing therapies. With respect to corneal infections, the most commonly used antibiotics (fl...

  • Article
  • Open Access
2 Citations
2,790 Views
20 Pages

Agri-Environment Atmospheric Real-Time Monitoring Technology Based on Drone and Light Scattering

  • Yuan Liu,
  • Xun He,
  • Wanzhang Wang,
  • Chenhui Zhu,
  • Ruibo Jian and
  • Jinfan Chen

9 November 2022

The emission of particulate matter (PM) from agricultural activities, such as concentrated animal feeding, straw combustion, and mechanized harvest, is a hot issue in the sustainable development of agriculture, which has attracted more and more atten...

  • Article
  • Open Access
115 Citations
19,470 Views
32 Pages

An Easy to Deploy Street Light Control System Based on Wireless Communication and LED Technology

  • Pilar Elejoste,
  • Ignacio Angulo,
  • Asier Perallos,
  • Aitor Chertudi,
  • Ignacio Julio García Zuazola,
  • Asier Moreno,
  • Leire Azpilicueta,
  • José Javier Astrain,
  • Francisco Falcone and
  • Jesús Villadangos

16 May 2013

This paper presents an intelligent streetlight management system based on LED lamps, designed to facilitate its deployment in existing facilities. The proposed approach, which is based on wireless communication technologies, will minimize the cost of...

  • Review
  • Open Access
77 Citations
24,374 Views
25 Pages

UV-C Light: A Promising Preservation Technology for Vegetable-Based Nonsolid Food Products

  • Rose Daphnee Tchonkouang,
  • Alexandre R. Lima,
  • Andreia C. Quintino,
  • Nathana L. Cristofoli and
  • Margarida C. Vieira

27 August 2023

A variety of bioactive substances present in fruit- and vegetable-processed products have health-promoting properties. The consumption of nutrient-rich plant-based products is essential to address undernutrition and micronutrient deficiencies. Preser...

  • Article
  • Open Access
2 Citations
1,634 Views
20 Pages

22 July 2025

University classrooms, core to higher education, have indoor light environments that directly affect students’ learning efficiency, visual health, and psychological states. This study integrates parametric optical simulation and virtual reality...

  • Article
  • Open Access
4,171 Views
6 Pages

27 March 2017

This study reports on the use of a substrate-reclamation technology for a gallium nitride (GaN)-based lighting-emitting diode (LED) wafer. There are many ways to reclaim sapphire substrates of scrap LED wafers. Compared with a common substrate-reclam...

  • Review
  • Open Access
2 Citations
2,026 Views
19 Pages

12 September 2025

The increasing reliance on light-based antimicrobial technologies, such as antimicrobial blue light (aBL) and antimicrobial photodynamic inactivation (aPDI), underscores the urgent need to comprehend bacterial survival strategies beyond conventional...

  • Review
  • Open Access
14 Citations
8,151 Views
26 Pages

22 July 2024

Integrated photonics is a cutting-edge field that merges optics and electronics on a single microchip, revolutionizing how we manipulate and transmit light. Imagine traditional bulky optical systems condensed onto a chip smaller than a fingernail, en...

  • Article
  • Open Access
22 Citations
7,215 Views
20 Pages

30 July 2020

The scope of the present paper is to promote social, cultural and environmental sustainability in cities by establishing a conceptual framework and the relationship amongst safety in urban public space (UPS), lighting and Information and Communicatio...

  • Review
  • Open Access
4 Citations
4,972 Views
22 Pages

The vast array of interconnected microorganisms across Earth’s ecosystems and within holobionts has been called the “Internet of Microbes.” Bacteria and archaea are masters of energy and information collection, storage, transformati...

  • Review
  • Open Access
29 Citations
8,316 Views
30 Pages

Exploring Types of Photonic Neural Networks for Imaging and Computing—A Review

  • Svetlana N. Khonina,
  • Nikolay L. Kazanskiy,
  • Roman V. Skidanov and
  • Muhammad A. Butt

17 April 2024

Photonic neural networks (PNNs), utilizing light-based technologies, show immense potential in artificial intelligence (AI) and computing. Compared to traditional electronic neural networks, they offer faster processing speeds, lower energy usage, an...

  • Review
  • Open Access
186 Citations
17,451 Views
42 Pages

Light Technology for Efficient and Effective Photodynamic Therapy: A Critical Review

  • José Francisco Algorri,
  • Mario Ochoa,
  • Pablo Roldán-Varona,
  • Luís Rodríguez-Cobo and
  • José Miguel López-Higuera

13 July 2021

Photodynamic therapy (PDT) is a cancer treatment with strong potential over well-established standard therapies in certain cases. Non-ionising radiation, localisation, possible repeated treatments, and stimulation of immunological response are some o...

  • Article
  • Open Access
26 Citations
5,022 Views
18 Pages

Co-cultivation of microalgae and microbes for pollutant removal from sewage is considered as an effective wastewater treatment method. The aim of this study is to screen the optimal photoperiod, light intensity and microalgae co-cultivation method fo...

  • Article
  • Open Access
8 Citations
8,848 Views
23 Pages

Influencing Activity of Bats by Dimly Lighting Wind Turbine Surfaces with Ultraviolet Light

  • Paul M. Cryan,
  • Paulo M. Gorresen,
  • Bethany R. Straw,
  • Syhoune (Simon) Thao and
  • Elise DeGeorge

21 December 2021

Wind energy producers need deployable devices for wind turbines that prevent bat fatalities. Based on the speculation that bats approach turbines after visually mistaking them for trees, we tested a potential light-based deterrence method. It is like...

  • Review
  • Open Access
4 Citations
5,090 Views
48 Pages

Fringe-Based Structured-Light 3D Reconstruction: Principles, Projection Technologies, and Deep Learning Integration

  • Zhongyuan Zhang,
  • Hao Wang,
  • Yiming Li,
  • Zinan Li,
  • Weihua Gui,
  • Xiaohao Wang,
  • Chaobo Zhang,
  • Xiaojun Liang and
  • Xinghui Li

11 October 2025

Structured-light 3D reconstruction is an active measurement technique that extracts spatial geometric information of objects by projecting fringe patterns and analyzing their distortions. It has been widely applied in industrial inspection, cultural...

  • Article
  • Open Access
53 Citations
6,345 Views
13 Pages

Materials Testing for the Development of Biocompatible Devices through Vat-Polymerization 3D Printing

  • Gustavo González,
  • Désirée Baruffaldi,
  • Cinzia Martinengo,
  • Angelo Angelini,
  • Annalisa Chiappone,
  • Ignazio Roppolo,
  • Candido Fabrizio Pirri and
  • Francesca Frascella

9 September 2020

Light-based 3D printing techniques could be a valuable instrument in the development of customized and affordable biomedical devices, basically for high precision and high flexibility in terms of materials of these technologies. However, more studies...

  • Article
  • Open Access
4 Citations
2,399 Views
10 Pages

The Preclinical Validation of 405 nm Light Parasiticidal Efficacy on Leishmania donovani in Ex Vivo Platelets in a Rag2−/− Mouse Model

  • Pravin R. Kaldhone,
  • Nazli Azodi,
  • Hannah L. Markle,
  • Neetu Dahiya,
  • Caitlin Stewart,
  • John Anderson,
  • Scott MacGregor,
  • Michelle Maclean,
  • Hira L. Nakhasi and
  • Chintamani Atreya
  • + 1 author

Violet–blue light of 405 nm in the visible spectrum at a dose of 270 J/cm2 alone has been shown to be an effective microbicidal tool for inactivating several bacteria, HIV-1, and Trypanosoma cruzi in ex vivo plasma and platelets. Unlike chemica...

  • Review
  • Open Access
5 Citations
2,386 Views
49 Pages

A Survey on the Main Techniques Adopted in Indoor and Outdoor Localization

  • Massimo Stefanoni,
  • Imre Kovács,
  • Peter Sarcevic and
  • Ákos Odry

In modern engineering applications, localization and orientation play an increasingly crucial role in ensuring the successful execution of assigned tasks. Industrial robots, smart home systems, healthcare environments, nuclear facilities, agriculture...

  • Review
  • Open Access
17 Citations
5,310 Views
17 Pages

Smart Multi-Responsive Biomaterials and Their Applications for 4D Bioprinting

  • Jinku Kim,
  • Gouripriya D A,
  • Poonam Debnath and
  • Prosenjit Saha

The emergence of 4D printing has become a pivotal tool to produce complex structures in biomedical applications such as tissue engineering and regenerative medicine. This chapter provides a concise overview of the current state of the field and its i...

  • Review
  • Open Access
38 Citations
11,617 Views
20 Pages

Advances in Optical Coherence Tomography Imaging Technology and Techniques for Choroidal and Retinal Disorders

  • Joshua Ong,
  • Arman Zarnegar,
  • Giulia Corradetti,
  • Sumit Randhir Singh and
  • Jay Chhablani

31 August 2022

Optical coherence tomography (OCT) imaging has played a pivotal role in the field of retina. This light-based, non-invasive imaging modality provides high-quality, cross-sectional analysis of the retina and has revolutionized the diagnosis and manage...

  • Review
  • Open Access
1 Citations
1,536 Views
17 Pages

Review of Optical Imaging in Coronary Artery Disease Diagnosis

  • Naeif Almagal,
  • Niall Leahy,
  • Foziyah Alqahtani,
  • Sara Alsubai,
  • Hesham Elzomor,
  • Paolo Alberto Del Sole,
  • Ruth Sharif and
  • Faisal Sharif

Optical Coherence Tomography (OCT) is a further light-based intravascular imaging modality and provides a high-resolution, cross-sectional view of coronary arteries. It has a useful anatomic and increasingly physiological evaluation in light of coron...

  • Review
  • Open Access
61 Citations
14,107 Views
29 Pages

The last two decades have witnessed a rich variety of indoor positioning and localization research. Starting with Microsoft Research pioneering the fingerprint approach based RADAR, MIT’s Cricket, and then moving towards beacon-based localizati...

  • Article
  • Open Access
457 Views
26 Pages

26 November 2025

Although research on occupancy detection has been extensive, most studies have focused on improving detection accuracy, while the application of occupancy models to device control remains limited. This paper presented an occupant-centric control (OCC...

  • Article
  • Open Access
6 Citations
4,076 Views
9 Pages

Hybridizing Lithography-Based Ceramic Additive Manufacturing with Two-Photon-Polymerization

  • Johanna Christiane Sänger,
  • Martin Schwentenwein,
  • Raúl Bermejo and
  • Jens Günster

21 March 2023

Stereolithography processes such as lithography-based ceramic manufacturing (LCM) are technologies that can produce centimeter-sized structures in a reasonable time frame. However, for some parts specifications, they lack resolution. Two-photon-polym...

  • Article
  • Open Access
10 Citations
3,403 Views
9 Pages

Visible 405 nm Violet-Blue Light Successfully Inactivates HIV-1 in Human Plasma

  • Viswanath Ragupathy,
  • Mohan Haleyurgirisetty,
  • Neetu Dahiya,
  • Caitlin Stewart,
  • John Anderson,
  • Scott MacGregor,
  • Michelle Maclean,
  • Indira Hewlett and
  • Chintamani Atreya

Despite significant advances in ensuring the safety of the blood supply, there is continued risk of transfusion transmitted infections (TTIs) from newly emerging or re-emerging infections. Globally, several pathogen reduction technologies (PRTs) for...

  • Review
  • Open Access
136 Citations
14,334 Views
56 Pages

Antimicrobial Photodynamic Therapy: Latest Developments with a Focus on Combinatory Strategies

  • Raphaëlle Youf,
  • Max Müller,
  • Ali Balasini,
  • Franck Thétiot,
  • Mareike Müller,
  • Alizé Hascoët,
  • Ulrich Jonas,
  • Holger Schönherr,
  • Gilles Lemercier and
  • Tony Le Gall
  • + 1 author

Antimicrobial photodynamic therapy (aPDT) has become a fundamental tool in modern therapeutics, notably due to the expanding versatility of photosensitizers (PSs) and the numerous possibilities to combine aPDT with other antimicrobial treatments to c...

  • Review
  • Open Access
15 Citations
3,651 Views
55 Pages

Eye Tracking in Optometry: A Systematic Review

  • Leonela González-Vides,
  • José Luis Hernández-Verdejo and
  • Pilar Cañadas-Suárez

16 August 2023

This systematic review examines the use of eye-tracking devices in optometry, describing their main characteristics, areas of application and metrics used. Using the PRISMA method, a systematic search was performed of three databases. The search stra...

  • Review
  • Open Access
129 Citations
10,788 Views
28 Pages

Advances on Bone Substitutes through 3D Bioprinting

  • Tullio Genova,
  • Ilaria Roato,
  • Massimo Carossa,
  • Chiara Motta,
  • Davide Cavagnetto and
  • Federico Mussano

23 September 2020

Reconstruction of bony defects is challenging when conventional grafting methods are used because of their intrinsic limitations (biological cost and/or biological properties). Bone regeneration techniques are rapidly evolving since the introduction...

  • Article
  • Open Access
747 Views
24 Pages

27 June 2025

Long-distance navigation requires global positioning methods to have complete autonomy, particularly when the Global Positioning System is unavailable. Considering that bionic polarized light-based global positioning technology exhibits good autonomy...

  • Review
  • Open Access
20 Citations
7,521 Views
40 Pages

Photocrosslinkable Biomaterials for 3D Bioprinting: Mechanisms, Recent Advances, and Future Prospects

  • Yushang Lai,
  • Xiong Xiao,
  • Ziwei Huang,
  • Hongying Duan,
  • Liping Yang,
  • Yuchu Yang,
  • Chenxi Li and
  • Li Feng

22 November 2024

Constructing scaffolds with the desired structures and functions is one of the main goals of tissue engineering. Three-dimensional (3D) bioprinting is a promising technology that enables the personalized fabrication of devices with regulated biologic...

  • Review
  • Open Access
1 Citations
2,132 Views
42 Pages

Integrating Additive and Traditional Manufacturing for Multiscale Bone Tissue Engineering Scaffolds

  • Yixuan Zhu,
  • Haotian Gao,
  • Qingchen Qiao,
  • Yafei Yuan,
  • Dongyu Fang,
  • Yuxing Bai and
  • Qingsong Jiang

16 September 2025

Additive manufacturing (AM) has emerged as a cutting-edge technology for fabricating biomimetic scaffolds with controllable architectures and compositional diversity, showing great promise in the fields of bone tissue engineering (BTE) and regenerati...

of 84