1
|
Ebrahimi F, Xu H, Fuenmayor E, Major I. Material compatibility and processing challenges in droplet deposition modelling additive manufacturing: A study on pharmaceutical excipients Polyvinylpyrrolidone/vinyl acetate (PVP/VA) and Polycaprolactone (PCL). Eur J Pharm Sci 2024; 200:106850. [PMID: 38996850 DOI: 10.1016/j.ejps.2024.106850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 06/19/2024] [Accepted: 07/09/2024] [Indexed: 07/14/2024]
Abstract
Additive manufacturing (AM) enables the production of complex, lightweight, and customized components with superior quality. Selecting the right materials considering their thermal properties, printability, and layer adhesion is crucial in melting-based AM techniques. This study investigates Droplet Deposition Modelling (DDM), an innovative material extrusion process that utilizes thermoplastic granules. DDM is distinguished by its shorter manufacturing times and a wider range of materials, setting it apart from traditional material extrusion methods such as fused filament fabrication. We investigated the printability and part quality in DDM using two common pharmaceutical excipients: Polyvinylpyrrolidone/vinyl acetate 6:4 (PVP/VA), which is highly brittle, and Polycaprolactone (PCL), known for its low solubility and role in controlled drug release. Different ratios of PVP/VA and PCL were compounded via hot melt extrusion (HME) and used in DDM to study the impact of ingredient content on printability and part quality, employing geometrical models to assess material compatibility and printability. The study revealed that increasing PVP/VA content leads to higher viscosity, reduced flowability, and uneven deposition, with formulations of 80 % and 100 % PVP/VA showing poor processability. In contrast, formulations with 60 % and 40 % PVP/VA exhibited smooth processing and compatibility with DDM. We identified processing temperature and Drop Aspect Ratio (DAR) as key factors influencing material printability and part quality. Elevated processing temperatures and reduced DAR were found to increase interface temperatures, reduce diffusion, and potentially cause the 'elephant feet' issue. Additionally, smaller droplet sizes and material characteristics, such as higher interfacial tension in PCL, could lead to coalescence. Our findings highlight the complexities in optimizing DDM processing parameters and material blends, underscoring the need for careful formulation design to achieve high-quality 3D printed products.
Collapse
Affiliation(s)
- Farnoosh Ebrahimi
- PRISM Research Institute, Technological University of the Shannon, Athlone N37 HD68, Ireland
| | - Han Xu
- PRISM Research Institute, Technological University of the Shannon, Athlone N37 HD68, Ireland
| | - Evert Fuenmayor
- PRISM Research Institute, Technological University of the Shannon, Athlone N37 HD68, Ireland
| | - Ian Major
- PRISM Research Institute, Technological University of the Shannon, Athlone N37 HD68, Ireland.
| |
Collapse
|
2
|
Munck S, De Bo C, Cawthorne C, Colombelli J. Innovating in a bioimaging core through instrument development. J Microsc 2024; 294:319-337. [PMID: 38683038 DOI: 10.1111/jmi.13312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/18/2024] [Accepted: 04/18/2024] [Indexed: 05/01/2024]
Abstract
Developing devices and instrumentation in a bioimaging core facility is an important part of the innovation mandate inherent in the core facility model but is a complex area due to the required skills and investments, and the impossibility of a universally applicable model. Here, we seek to define technological innovation in microscopy and situate it within the wider core facility innovation portfolio, highlighting how strategic development can accelerate access to innovative imaging modalities and increase service range, and thus maintain the cutting edge needed for sustainability. We consider technology development from the perspective of core facility staff and their stakeholders as well as their research environment and aim to present a practical guide to the 'Why, When, and How' of developing and integrating innovative technology in the core facility portfolio. Core facilities need to innovate to stay up to date. However, how to carry out the innovation is not very obvious. One area of innovation in imaging core facilities is the building of optical setups. However, the creation of optical setups requires specific skill sets, time, and investments. Consequently, the topic of whether a core facility should develop optical devices is discussed as controversial. Here, we provide resources that should help get into this topic, and we discuss different options when and how it makes sense to build optical devices in core facilities. We discuss various aspects, including consequences for staff and the relation of the core to the institute, and also broaden the scope toward other areas of innovation.
Collapse
Affiliation(s)
- Sebastian Munck
- Neuroscience Department, KU Leuven, Leuven, Belgium
- VIB BioImaging Core, VIB, Leuven, Belgium
| | | | - Christopher Cawthorne
- Department of Imaging and Pathology, Nuclear Medicine and Molecular Imaging, KU Leuven, Leuven, Belgium
| | - Julien Colombelli
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| |
Collapse
|
3
|
Le BT, Auer KM, Lopez DA, Shum JP, Suarsana B, Suh GYK, Hedde PN, Ahrar S. Orthogonal-view microscope for the biomechanics investigations of aquatic organisms. HARDWAREX 2024; 18:e00533. [PMID: 38711599 PMCID: PMC11070628 DOI: 10.1016/j.ohx.2024.e00533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 04/07/2024] [Accepted: 04/13/2024] [Indexed: 05/08/2024]
Abstract
Microscopes are essential for the biomechanical and hydrodynamical investigation of small aquatic organisms. We report a prototype of a do-it-yourself microscope that enables the visualization of organisms from two orthogonal imaging planes - top and side views. Compared to conventional imaging systems, this approach provides a comprehensive visualization strategy of organisms, which could have complex shapes and morphologies. The microscope was constructed by combining custom 3D-printed parts and off-the-shelf components. The system is designed for modularity and reconfigurability. Open-source design files and build instructions are provided in this report. Additionally, proof-of-use experiments (particularly with Hydra) and other organisms that combine the imaging with an analysis pipeline were demonstrated to highlight the system's utility. Beyond the applications demonstrated, the system can be used or modified for various imaging applications.
Collapse
Affiliation(s)
- Brian T. Le
- Department of Biomedical Engineering, California State University Long Beach, 1250 Bellflower Blvd. Long Beach, CA 90840, USA
| | - Katherine M. Auer
- Department of Biomedical Engineering, California State University Long Beach, 1250 Bellflower Blvd. Long Beach, CA 90840, USA
| | - David A. Lopez
- Department of Biomedical Engineering, California State University Long Beach, 1250 Bellflower Blvd. Long Beach, CA 90840, USA
| | - Justin P. Shum
- Department of Biomedical Engineering, California State University Long Beach, 1250 Bellflower Blvd. Long Beach, CA 90840, USA
| | - Brian Suarsana
- Department of Biomedical Engineering, California State University Long Beach, 1250 Bellflower Blvd. Long Beach, CA 90840, USA
| | - Ga-Young Kelly Suh
- Department of Biomedical Engineering, California State University Long Beach, 1250 Bellflower Blvd. Long Beach, CA 90840, USA
| | - Per Niklas Hedde
- Beckman Laser Institute and Medical Clinic, University of California Irvine, Irvine, CA 92612, USA
| | - Siavash Ahrar
- Department of Biomedical Engineering, California State University Long Beach, 1250 Bellflower Blvd. Long Beach, CA 90840, USA
| |
Collapse
|
4
|
Ebrahimi F, Xu H, Fuenmayor E, Major I. Tailoring drug release in bilayer tablets through droplet deposition modeling and injection molding. Int J Pharm 2024; 653:123859. [PMID: 38307401 DOI: 10.1016/j.ijpharm.2024.123859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 02/04/2024]
Abstract
This study explores the innovative production of personalized bilayer tablets, integrating two advanced manufacturing techniques: Droplet Deposition Modeling (DDM) and Injection Molding (IM). Unlike traditional methods limited to customizing dense bilayer medicines, our approach uses Additive Manufacturing (AM) to effectively adjust drug release profiles. Focusing on Caffeine and Paracetamol, we found successful processing for both DDM and IM using Caffeine formulation. The high viscosity of Paracetamol formulation posed challenges during DDM processing. Integrating Paracetamol formulation for the over-molding process proved effective, demonstrating IM's versatility in handling complex formulations. Varying infill percentages in DDM tablets led to distinct porosities affecting diverse drug release profiles in DDM-fabricated tablets. In contrast, tablets with high-density structures formed through the over-molding process displayed slower and more uniform release patterns. Combining DDM and IM techniques allows for overcoming the inherent limitations of each technique independently, enabling the production of bilayer tablets with customizable drug release profiles. The study's results offer promising insights into the future of personalized medicine, suggesting new pathways for the development of customized oral dosage forms.
Collapse
Affiliation(s)
- Farnoosh Ebrahimi
- PRISM Research Institute, Technological University of the Shannon, N37 HD68 Athlone, Ireland
| | - Han Xu
- PRISM Research Institute, Technological University of the Shannon, N37 HD68 Athlone, Ireland
| | - Evert Fuenmayor
- PRISM Research Institute, Technological University of the Shannon, N37 HD68 Athlone, Ireland
| | - Ian Major
- PRISM Research Institute, Technological University of the Shannon, N37 HD68 Athlone, Ireland.
| |
Collapse
|
5
|
Branning JM, Faughnan KA, Tomson AA, Bell GJ, Isbell SM, DeGroot A, Jameson L, Kilroy K, Smith M, Smith R, Mottel L, Branning EG, Worrall Z, Anderson F, Panditaradyula A, Yang W, Abdelmalek J, Brake J, Cash KJ. Multifunction fluorescence open source in vivo/in vitro imaging system (openIVIS). PLoS One 2024; 19:e0299875. [PMID: 38498588 PMCID: PMC10947658 DOI: 10.1371/journal.pone.0299875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 02/18/2024] [Indexed: 03/20/2024] Open
Abstract
The widespread availability and diversity of open-source microcontrollers paired with off-the-shelf electronics and 3D printed technology has led to the creation of a wide range of low-cost scientific instruments, including microscopes, spectrometers, sensors, data loggers, and other tools that can be used for research, education, and experimentation. These devices can be used to explore a wide range of scientific topics, from biology and chemistry to physics and engineering. In this study, we designed and built a multifunction fluorescent open source in vivo/in vitro imaging system (openIVIS) system that integrates a Raspberry Pi with commercial cameras and LEDs with 3D printed structures combined with an acrylic housing. Our openIVIS provides three excitation wavelengths of 460 nm, 520 nm, and 630 nm integrated with Python control software to enable fluorescent measurements across the full visible light spectrum. To demonstrate the potential applications of our system, we tested its performance against a diverse set of experiments including laboratory assays (measuring fluorescent dyes, using optical nanosensors, and DNA gel electrophoresis) to potentially fieldable applications (plant and mineral imaging). We also tested the potential use for a high school biology environment by imaging small animals and tracking their development over the course of ten days. Our system demonstrated its ability to measure a wide dynamic range fluorescent response from millimolar to picomolar concentrations in the same sample while measuring responses across visible wavelengths. These results demonstrate the power and flexibility of open-source hardware and software and how it can be integrated with customizable manufacturing to create low-cost scientific instruments with a wide range of applications. Our study provides a promising model for the development of low-cost instruments that can be used in both research and education.
Collapse
Affiliation(s)
- John M. Branning
- Quantitative Biosciences and Engineering, Colorado School of Mines, Golden, Colorado, United States of America
- The MITRE Corporation, Bedford, Massachusetts, United States of America
| | - Kealy A. Faughnan
- Chemical and Biological Engineering Department, Colorado School of Mines, Golden, Colorado, United States of America
| | - Austin A. Tomson
- Mechanical Engineering, Colorado School of Mines, Golden, Colorado, United States of America
| | - Grant J. Bell
- Quantitative Biosciences and Engineering, Colorado School of Mines, Golden, Colorado, United States of America
| | - Sydney M. Isbell
- Chemical and Biological Engineering Department, Colorado School of Mines, Golden, Colorado, United States of America
| | - Allen DeGroot
- Electrical Engineering, Colorado School of Mines, Golden, Colorado, United States of America
| | - Lydia Jameson
- Electrical Engineering, Colorado School of Mines, Golden, Colorado, United States of America
| | - Kramer Kilroy
- Mechanical Engineering, Colorado School of Mines, Golden, Colorado, United States of America
| | - Michael Smith
- Mechanical Engineering, Colorado School of Mines, Golden, Colorado, United States of America
| | - Robert Smith
- Electrical Engineering, Colorado School of Mines, Golden, Colorado, United States of America
| | - Landon Mottel
- Arvada West High School, Arvada, Colorado, United States of America
| | - Elizabeth G. Branning
- Colorado Early Colleges Castle Rock, Castle Rock, Colorado, United States of America
| | - Zoe Worrall
- Department of Engineering, Harvey Mudd College, Claremont, California, United States of America
| | - Frances Anderson
- Department of Engineering, Harvey Mudd College, Claremont, California, United States of America
| | - Ashrit Panditaradyula
- Department of Engineering, Harvey Mudd College, Claremont, California, United States of America
| | - William Yang
- Department of Engineering, Harvey Mudd College, Claremont, California, United States of America
| | - Joseph Abdelmalek
- Department of Engineering, Harvey Mudd College, Claremont, California, United States of America
| | - Joshua Brake
- Department of Engineering, Harvey Mudd College, Claremont, California, United States of America
| | - Kevin J. Cash
- Quantitative Biosciences and Engineering, Colorado School of Mines, Golden, Colorado, United States of America
- Chemical and Biological Engineering Department, Colorado School of Mines, Golden, Colorado, United States of America
| |
Collapse
|
6
|
Son YT, Son K, Eo GO, Lee KB. Feasibility of images acquired using smartphone camera for marginal and internal fit of fixed dental prosthesis: comparison and correlation study. Sci Rep 2024; 14:5291. [PMID: 38438467 PMCID: PMC10912410 DOI: 10.1038/s41598-024-55711-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 02/27/2024] [Indexed: 03/06/2024] Open
Abstract
This study aimed to measure marginal and internal fit using images captured with both an optical microscope and a smartphone camera, comparing the fit measurement performance of these devices and analyzing their correlation. Working casts (with 10 posterior and 10 anterior teeth) created to fabricate fixed dental prostheses were used. These working casts were scanned using a desktop scanner (E1) to design an interim crown, and the designed interim crown was fabricated using a three-dimensional (3D) printer. Utilizing the silicone replica technique, the fabricated interim crown replicated the fit, which was then captured using both an optical microscope and a smartphone camera. The captured images were used to measure the marginal and internal fit according to the imaging device. Intraclass correlation coefficients (ICC) were used for reliability analysis according to the imaging device. Furthermore, the Wilcoxon signed-rank test was adopted for the comparative evaluation of the marginal and internal fit between the imaging devices (α = 0.05). The measurement results of the marginal and internal fit according to the optical microscope and smartphone camera did exhibit a significant difference (P < 0.05). The ICC between the two devices showed an "excellent" agreement of over 0.9 at all measurement points (P < 0.001). A smartphone camera could be used to obtain images for evaluating the marginal and internal fit.
Collapse
Affiliation(s)
- Young-Tak Son
- Department of Dental Science, Graduate School, Kyungpook National University, Daegu, Republic of Korea
- Advanced Dental Device Development Institute, Kyungpook National University, 2177 Dalgubuldaero, Jung-Gu, Daegu, 41940, Republic of Korea
| | - KeunBaDa Son
- Advanced Dental Device Development Institute, Kyungpook National University, 2177 Dalgubuldaero, Jung-Gu, Daegu, 41940, Republic of Korea
| | - Gyeong-O Eo
- Department of Smart Software, Yonam Institute of Technology, Jinju-Si, Gyeongsangnam-Do, Republic of Korea
| | - Kyu-Bok Lee
- Advanced Dental Device Development Institute, Kyungpook National University, 2177 Dalgubuldaero, Jung-Gu, Daegu, 41940, Republic of Korea.
- Department of Prosthodontics, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea.
| |
Collapse
|
7
|
Rosen DG, de Mello ES, Dhingra S, Dawsey SM, Knapper J, Bowman R, Anandasabapathy S. Utility of a Low-Cost 3-D Printed Microscope for Evaluating Esophageal Biopsies. ANNALS OF 3D PRINTED MEDICINE 2024; 13:100145. [PMID: 38405263 PMCID: PMC10887376 DOI: 10.1016/j.stlm.2024.100145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024] Open
Abstract
In this manuscript we assessed the utility of a low-cost 3D printed microscope to evaluate esophageal biopsies. We conducted a comparative analysis between the traditional microscope and our 3-D printed microscope, utilizing a set of esophageal biopsy samples obtained from patients undergoing screening endoscopy. Two pathologists independently examined 30 esophageal biopsies by light microscopy and digital images obtained using a low-cost 3D printed microscope (Observer 1 and 2). The glass slide consensus diagnosis was compared to the findings of 2 additional pathologist who independently just reviewed the digital images (Observer 3 and 4). The intra-observer agreement was substantial to almost perfect for observer 1 (k:0.64) and 2 (k:0.84). All four observers had 100% sensitivity and negative predictive value, whereas specificity ranged from 59% to 100% and positive predictive value ranged from 21% to 100%. The PPV and specificity were lower for the two Observers (3 and 4) who just examined the digital images. Overall, our results suggest that telepathology may be used with high sensitivity and specificity, utilizing the pictures produced by our 3D-printed microscope.
Collapse
Affiliation(s)
- Daniel G. Rosen
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Tx
- Department of Pathology, Michael E. DeBakey, Veterans Administration Medical Center, Houston, Tx
| | | | - Sadhna Dhingra
- Department of Pathology, Houston Methodist Hospital, Houston, Tx
| | - Sanford M. Dawsey
- Nutritional Epidemiology Branch, Division of Cancer Epidemiology & Genetics, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Joe Knapper
- School of Physics and Astronomy, University of Glasgow, UK
| | - Richard Bowman
- School of Physics and Astronomy, University of Glasgow, UK
| | - Sharmila Anandasabapathy
- Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, Texas
| |
Collapse
|
8
|
McNair MC, Cocioba SC, Pietrzyk P, Rife TW. Toward an open-source 3D-printable laboratory. APPLICATIONS IN PLANT SCIENCES 2024; 12:e11562. [PMID: 38369980 PMCID: PMC10873812 DOI: 10.1002/aps3.11562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 07/12/2023] [Accepted: 07/31/2023] [Indexed: 02/20/2024]
Abstract
Premise Low-cost, repairable lab equipment is rare within the biological sciences. By lowering the costs of entry using 3D printing and open-source hardware, our goal is to empower both amateur and professional scientists to conduct research. Methods We developed a modular system of 3D-printable designs called COBLE (Collection of Bespoke Laboratory Equipment), including novel and remixed 3D-printable lab equipment that can be inexpensively printed, assembled, and repaired for a fraction of the cost of retail equivalents. Results Here we present novel tools that utilize 3D printing to enable a wide range of scientific experiments. We include additional resources for scientists and labs that are interested in utilizing 3D printing for their research. Discussion By describing the broad potential that 3D-printed designs can have in the biological sciences, we hope to inspire others to implement and improve upon these designs, improving accessibility and enabling science for all.
Collapse
Affiliation(s)
- Mason C. McNair
- Plant and Environmental Sciences, Pee Dee Research and Education CenterClemson University2200 Pocket RoadFlorenceSouth Carolina29506USA
| | - Sebastian C. Cocioba
- Binomica Labs4301 22nd Street, Floor 3, Studio 342, Long Island CityNew York11101USA
| | - Peter Pietrzyk
- Department of Plant BiologyUniversity of Georgia120 Carlton StreetAthensGeorgia30602USA
| | - Trevor W. Rife
- Plant and Environmental Sciences, Pee Dee Research and Education CenterClemson University2200 Pocket RoadFlorenceSouth Carolina29506USA
| |
Collapse
|
9
|
Tadrous PJ. Use of a refractive index-coupled diffuser to both generate and measure high-numerical aperture illumination for light microscopy. J Microsc 2023; 292:135-147. [PMID: 37846934 DOI: 10.1111/jmi.13237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 10/08/2023] [Accepted: 10/09/2023] [Indexed: 10/18/2023]
Abstract
While numerical aperture of transillumination at or above 1.25 can be achieved with a substage oiled Abbe condenser, such immersion-capable condensers can be expensive limiting their use in resource poor settings. Also the measurement of numerical aperture generated by illuminators has received relatively little attention in the literature compared to methods for measuring the numerical aperture of acceptance by objectives. In this article, I show how an inexpensive paper diffuser with refractive-index coupling to the sample slide can generate illumination of a numerical aperture of over 1.4 at a small fraction of the cost of oiled dioptric condensers of comparable numerical aperture. In addition, I present two ways in which a diffuser may also be used to measure the numerical aperture generated by an illuminator using either a calibrated index-coupled paper diffuser to implement an interpolative variation of the Horsfall method or a diffuser as a detector screen coupled to a self-built microscope slide-based illumination system apertometer.
Collapse
|
10
|
Cabello MKE, De Guzman JE. Utilization of accessible resources in the fabrication of an affordable, portable, high-resolution, 3D printed, digital microscope for Philippine diagnostic applications. PLOS GLOBAL PUBLIC HEALTH 2023; 3:e0002070. [PMID: 37988332 PMCID: PMC10662710 DOI: 10.1371/journal.pgph.0002070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 09/22/2023] [Indexed: 11/23/2023]
Abstract
Philippine clinical laboratory licensing requirements mandate that diagnostic microscopy for Tuberculosis (TB) sputum microscopy, urinalysis, pap smears, wet smears, an option for complete blood count, stool exams, and malaria thick and thin smears should be accessible and available in health facilities including primary care centers. However, access to these essential diagnostics is hampered by the lack of trained personnel, relatively high costs for supplies and equipment especially in rural and underserved areas. This served as motivation for our team to utilize accessible resources in the form of affordable 3D printers, available CAD software, and components to build our low-cost Openflexure microscope (OFM) prototype. We successfully fabricated our prototype for a total of 310$ with a weight of 525g. We used pathology teaching slides from the Ateneo School of Medicine and Public Health and examined the OFM prototype imaging capabilities. The calculated image resolution was 13% higher compared to an LED light microscope sample captured by a mobile phone at 40x and 15% for 100x. The sampled slide images had adequate clarity with some identifiable cellular features for Rheumatic Heart Disease (RHD), Tuberculosis in soft tissue, and Ascariasis. We were able to correct the color aberrations of the OFM we built and was able to scan images up to 1000x magnification without using oil. Given the features and cost, the OFM prototype can be an attractive and affordable option as an alternative or augmentation to diagnostic microscopy in Philippine primary care. Moreover, it may enable telepathology to support diagnostic microscopy in frontline care.
Collapse
Affiliation(s)
- Mark Kristan Espejo Cabello
- Research Faculty, Ateneo de Manila University School of Medicine and Public Health, Center for Research and Innovation, Pasig City, National Capital Region, Philippines
| | - Jeremie E. De Guzman
- Research Faculty, Ateneo de Manila University School of Medicine and Public Health, Center for Research and Innovation, Pasig City, National Capital Region, Philippines
| |
Collapse
|
11
|
Gabalski MA, Smith KR, Hix J, Zinn KR. Comparisons of 3D printed materials for biomedical imaging applications. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2023; 24:2273803. [PMID: 38415266 PMCID: PMC10898812 DOI: 10.1080/14686996.2023.2273803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 10/17/2023] [Indexed: 02/29/2024]
Abstract
In biomedical imaging, it is desirable that custom-made accessories for restraint, anesthesia, and monitoring can be easily cleaned and not interfere with the imaging quality or analyses. With the rise of 3D printing as a form of rapid prototyping or manufacturing for imaging tools and accessories, it is important to understand which printable materials are durable and not likely to interfere with imaging applications. Here, 15 3D printable materials were evaluated for radiodensity, optical properties, simulated wear, and capacity for repeated cleaning and disinfection. Materials that were durable, easily cleaned, and not expected to interfere with CT, PET, or optical imaging applications were identified.
Collapse
Affiliation(s)
- Mitchell A Gabalski
- Biomedical Engineering, Michigan State University, East Lansing, MI, USA
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA
| | - Kylie R Smith
- Biomedical Engineering, Michigan State University, East Lansing, MI, USA
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA
| | - Jeremy Hix
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA
- Radiology, Michigan State University, East Lansing, MI, USA
- Advanced Molecular Imaging Facility, Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA
| | - Kurt R Zinn
- Biomedical Engineering, Michigan State University, East Lansing, MI, USA
- Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, MI, USA
- Radiology, Michigan State University, East Lansing, MI, USA
- Small Animal Clinical Sciences, Michigan State University, East Lansing, MI, USA
| |
Collapse
|
12
|
Rodriguez-Vargas BR, Stornelli G, Folgarait P, Ridolfi MR, Miranda Pérez AF, Di Schino A. Recent Advances in Additive Manufacturing of Soft Magnetic Materials: A Review. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5610. [PMID: 37629901 PMCID: PMC10456432 DOI: 10.3390/ma16165610] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/10/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023]
Abstract
Additive manufacturing (AM) is an attractive set of processes that are being employed lately to process specific materials used in the fabrication of electrical machine components. This is because AM allows for the preservation or enhancement of their magnetic properties, which may be degraded or limited when manufactured using other traditional processes. Soft magnetic materials (SMMs), such as Fe-Si, Fe-Ni, Fe-Co, and soft magnetic composites (SMCs), are suitable materials for electrical machine additive manufacturing components due to their magnetic, thermal, mechanical, and electrical properties. In addition to these, it has been observed in the literature that other alloys, such as soft ferrites, are difficult to process due to their low magnetization and brittleness. However, thanks to additive manufacturing, it is possible to leverage their high electrical resistivity to make them alternative candidates for applications in electrical machine components. It is important to highlight the significant progress in the field of materials science, which has enabled the development of novel materials such as high-entropy alloys (HEAs). These alloys, due to their complex chemical composition, can exhibit soft magnetic properties. The aim of the present work is to provide a critical review of the state-of-the-art SMMs manufactured through different AM technologies. This review covers the influence of these technologies on microstructural changes, mechanical strengths, post-processing, and magnetic parameters such as saturation magnetization (MS), coercivity (HC), remanence (Br), relative permeability (Mr), electrical resistivity (r), and thermal conductivity (k).
Collapse
Affiliation(s)
- Bryan Ramiro Rodriguez-Vargas
- Dipartimento di Ingegneria, Università degli Studi di Perugia, Via G. Duranti 93, 06125 Perugia, Italy; (B.R.R.-V.); (G.S.)
| | - Giulia Stornelli
- Dipartimento di Ingegneria, Università degli Studi di Perugia, Via G. Duranti 93, 06125 Perugia, Italy; (B.R.R.-V.); (G.S.)
| | - Paolo Folgarait
- Seamthesis Srl, Via IV Novembre 156, 29122 Piacenza, Italy; (P.F.); (M.R.R.)
| | - Maria Rita Ridolfi
- Seamthesis Srl, Via IV Novembre 156, 29122 Piacenza, Italy; (P.F.); (M.R.R.)
| | - Argelia Fabiola Miranda Pérez
- Department of Strategic Planning and Technology Management, Universidad Popular Autónoma del Estado de Puebla, 17 Sur, 901, Barrio de Santiago, Puebla 72410, Mexico
| | - Andrea Di Schino
- Dipartimento di Ingegneria, Università degli Studi di Perugia, Via G. Duranti 93, 06125 Perugia, Italy; (B.R.R.-V.); (G.S.)
| |
Collapse
|
13
|
Fitzpatrick X, Fayzullin A, Wang G, Parker L, Dokos S, Guller A. Cells-in-Touch: 3D Printing in Reconstruction and Modelling of Microscopic Biological Geometries for Education and Future Research Applications. Bioengineering (Basel) 2023; 10:687. [PMID: 37370618 DOI: 10.3390/bioengineering10060687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 05/05/2023] [Accepted: 05/25/2023] [Indexed: 06/29/2023] Open
Abstract
Additive manufacturing (3D printing) and computer-aided design (CAD) still have limited uptake in biomedical and bioengineering research and education, despite the significant potential of these technologies. The utility of organ-scale 3D-printed models of living structures is widely appreciated, while the workflows for microscopy data translation into tactile accessible replicas are not well developed yet. Here, we demonstrate an accessible and reproducible CAD-based methodology for generating 3D-printed scalable models of human cells cultured in vitro and imaged using conventional scanning confocal microscopy with fused deposition modeling (FDM) 3D printing. We termed this technology CiTo-3DP (Cells-in-Touch for 3D Printing). As a proof-of-concept, we created dismountable CiTo-3DP models of human epithelial, mesenchymal, and neural cells by using selectively stained nuclei and cytoskeletal components. We also provide educational and research context for the presented cellular models. In the future, the CiTo-3DP approach can be adapted to different imaging and 3D printing modalities and comprehensively present various cell types, subcellular structures, and extracellular matrices. The resulting CAD and 3D printed models could be used for a broad spectrum of education and research applications.
Collapse
Affiliation(s)
- Xavier Fitzpatrick
- ARC Centre of Excellence for Nanoscale Biophotonics, Sydney, NSW 2052, Australia
- The Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Alexey Fayzullin
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
- World-Class Research Center "Digital Biodesign and Personalized Healthcare", Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Gonglei Wang
- The Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Lindsay Parker
- ARC Centre of Excellence for Nanoscale Biophotonics, Sydney, NSW 2052, Australia
- School of Natural Sciences, Faculty of Science and Engineering, Macquarie University, Sydney, NSW 2109, Australia
| | - Socrates Dokos
- The Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Anna Guller
- ARC Centre of Excellence for Nanoscale Biophotonics, Sydney, NSW 2052, Australia
- The Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
- Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW 2109, Australia
| |
Collapse
|
14
|
Almahayni K, Nestola G, Spiekermann M, Möckl L. Simple, Economic, and Robust Rail-Based Setup for Super-Resolution Localization Microscopy. J Phys Chem A 2023; 127:4553-4560. [PMID: 37163339 DOI: 10.1021/acs.jpca.3c01351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Research during the past 2 decades has showcased the power of single-molecule localization microscopy (SMLM) as a tool for exploring the nanoworld. However, SMLM systems are typically available in specialized laboratories and imaging facilities, owing to their expensiveness as well as complex assembly and alignment procedure. Here, we lay out the blueprint of a sturdy, rail-based, cost-efficient, multicolor SMLM setup that is easy to construct and align in service of simplifying the accessibility of SMLM. We characterize the optical properties of the design and assess its capabilities, robustness, and stability. The performance of the system is assayed using super-resolution imaging of biological samples. We believe that this design will make SMLM more affordable and broaden its availability.
Collapse
Affiliation(s)
- Karim Almahayni
- Max Planck Institute for the Science of Light, Staudtstr. 2, 91058 Erlangen, Germany
- Department of Physics, Friedrich-Alexander-University Erlangen-Nuremberg, 91054 Erlangen, Germany
| | - Gianluca Nestola
- Max Planck Institute for the Science of Light, Staudtstr. 2, 91058 Erlangen, Germany
| | - Malte Spiekermann
- Max Planck Institute for the Science of Light, Staudtstr. 2, 91058 Erlangen, Germany
| | - Leonhard Möckl
- Max Planck Institute for the Science of Light, Staudtstr. 2, 91058 Erlangen, Germany
| |
Collapse
|
15
|
Villata S, Canta M, Baruffaldi D, Pavan A, Chiappone A, Pirri CF, Frascella F, Roppolo I. 3D printable acrylate polydimethylsiloxane resins for cell culture and drug testing. Biomater Sci 2023; 11:2950-2959. [PMID: 36912680 DOI: 10.1039/d3bm00152k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
Nowadays, most of the microfluidic devices for biological applications are fabricated with only few well-established materials. Among these, polydimethylsiloxane (PDMS) is the most used and known. However, it has many limitations, like the operator dependent and time-consuming manufacturing technique and the high molecule retention. TEGORad or Acrylate PDMS is an acrylate polydimethylsiloxane copolymer that can be 3D printed through Digital Light Processing (DLP), a technology that can boast reduction of waste products and the possibility of low cost and rapid manufacturing of complex components. Here, we developed 3D printed Acrylate PDMS-based devices for cell culture and drug testing. Our in vitro study shows that Acrylate PDMS can sustain cell growth of lung and skin epithelium, both of great interest for in vitro drug testing, without causing any genotoxic effect. Moreover, flow experiments with a drug-like solution (Rhodamine 6G) show that Acrylate PDMS drug retention is negligible unlike the high signal shown by PDMS. In conclusion, the study demonstrates that this acrylate resin can be an excellent alternative to PDMS to design stretchable platforms for cell culture and drug testing.
Collapse
Affiliation(s)
- Simona Villata
- Dipartimento di Scienza Applicata e Tecnologia, PolitoBIOMed Lab, Politecnico di Torino, C.so Duca degli Abruzzi 24, Turin 10129, Italy.
| | - Marta Canta
- Dipartimento di Scienza Applicata e Tecnologia, PolitoBIOMed Lab, Politecnico di Torino, C.so Duca degli Abruzzi 24, Turin 10129, Italy.
| | - Désirée Baruffaldi
- Dipartimento di Scienza Applicata e Tecnologia, PolitoBIOMed Lab, Politecnico di Torino, C.so Duca degli Abruzzi 24, Turin 10129, Italy.
| | - Alice Pavan
- Dipartimento di Scienza Applicata e Tecnologia, PolitoBIOMed Lab, Politecnico di Torino, C.so Duca degli Abruzzi 24, Turin 10129, Italy.
| | - Annalisa Chiappone
- Dipartimento di Scienza Applicata e Tecnologia, PolitoBIOMed Lab, Politecnico di Torino, C.so Duca degli Abruzzi 24, Turin 10129, Italy.
| | - Candido Fabrizio Pirri
- Dipartimento di Scienza Applicata e Tecnologia, PolitoBIOMed Lab, Politecnico di Torino, C.so Duca degli Abruzzi 24, Turin 10129, Italy. .,Center for Sustainable Futures @PolitoIstituto Italiano di Tecnologia, Via Livorno 60, Turin 10144, Italy
| | - Francesca Frascella
- Dipartimento di Scienza Applicata e Tecnologia, PolitoBIOMed Lab, Politecnico di Torino, C.so Duca degli Abruzzi 24, Turin 10129, Italy.
| | - Ignazio Roppolo
- Dipartimento di Scienza Applicata e Tecnologia, PolitoBIOMed Lab, Politecnico di Torino, C.so Duca degli Abruzzi 24, Turin 10129, Italy.
| |
Collapse
|
16
|
Veloso WB, Paixão TR, Meloni GN. 3D printed electrodes design and voltammetric response. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
|
17
|
Rajesh N, Coates I, Driskill MM, Dulay MT, Hsiao K, Ilyin D, Jacobson GB, Kwak JW, Lawrence M, Perry J, Shea CO, Tian S, DeSimone JM. 3D-Printed Microarray Patches for Transdermal Applications. JACS AU 2022; 2:2426-2445. [PMID: 36465529 PMCID: PMC9709783 DOI: 10.1021/jacsau.2c00432] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/30/2022] [Accepted: 10/03/2022] [Indexed: 05/14/2023]
Abstract
The intradermal (ID) space has been actively explored as a means for drug delivery and diagnostics that is minimally invasive. Microneedles or microneedle patches or microarray patches (MAPs) are comprised of a series of micrometer-sized projections that can painlessly puncture the skin and access the epidermal/dermal layer. MAPs have failed to reach their full potential because many of these platforms rely on dated lithographic manufacturing processes or molding processes that are not easily scalable and hinder innovative designs of MAP geometries that can be achieved. The DeSimone Laboratory has recently developed a high-resolution continuous liquid interface production (CLIP) 3D printing technology. This 3D printer uses light and oxygen to enable a continuous, noncontact polymerization dead zone at the build surface, allowing for rapid production of MAPs with precise and tunable geometries. Using this tool, we are now able to produce new classes of lattice MAPs (L-MAPs) and dynamic MAPs (D-MAPs) that can deliver both solid state and liquid cargos and are also capable of sampling interstitial fluid. Herein, we will explore how additive manufacturing can revolutionize MAP development and open new doors for minimally invasive drug delivery and diagnostic platforms.
Collapse
Affiliation(s)
- Netra
U. Rajesh
- Department
of Bioengineering, Stanford University, Stanford, California94305, United States
| | - Ian Coates
- Department
of Chemical Engineering, Stanford University, Stanford, California94305, United States
| | - Madison M. Driskill
- Department
of Chemical Engineering, Stanford University, Stanford, California94305, United States
| | - Maria T. Dulay
- Department
of Radiology, Stanford University, Stanford, California94305, United States
| | - Kaiwen Hsiao
- Department
of Chemical Engineering, Stanford University, Stanford, California94305, United States
| | - Dan Ilyin
- Department
of Mechanical Engineering, Stanford University, Stanford, California94305, United States
| | - Gunilla B. Jacobson
- Department
of Radiology, Stanford University, Stanford, California94305, United States
| | - Jean Won Kwak
- Department
of Radiology, Stanford University, Stanford, California94305, United States
| | - Micah Lawrence
- Department
of Bioengineering, Stanford University, Stanford, California94305, United States
| | - Jillian Perry
- Eshelman
School of Pharmacy, University of North
Carolina at Chapel Hill, Chapel
Hill, North Carolina27599, United States
| | - Cooper O. Shea
- Department
of Mechanical Engineering, Stanford University, Stanford, California94305, United States
| | - Shaomin Tian
- Department
of Microbiology and Immunology, University
of North Carolina at Chapel Hill, Chapel Hill, North Carolina27599, United States
| | - Joseph M. DeSimone
- Department
of Chemical Engineering, Stanford University, Stanford, California94305, United States
- Department
of Radiology, Stanford University, Stanford, California94305, United States
| |
Collapse
|
18
|
Saggiomo V. A 3D Printer in the Lab: Not Only a Toy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2202610. [PMID: 35831252 PMCID: PMC9507339 DOI: 10.1002/advs.202202610] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/01/2022] [Indexed: 06/15/2023]
Abstract
Although 3D printers are becoming more common in households, they are still under-represented in many laboratories worldwide and regarded as toys rather than as laboratory equipment. This short review wants to change this conservative point of view. This mini-review focuses on fused deposition modeling printers and what happens after acquiring your first 3D printer. In short, these printers melt plastic filament and deposit it layer by layer to create the final object. They are getting cheaper and easier to use, and nowadays it is not difficult to find good 3D printers for less than €500. At such a price, a 3D printer is one, if not the most, versatile piece of equipment you can have in a laboratory.
Collapse
Affiliation(s)
- Vittorio Saggiomo
- Department of BioNanoTechnologyWageningen UniversityBornse Weilanden 9Wageningen6708WGThe Netherlands
| |
Collapse
|
19
|
Hohlbein J, Diederich B, Marsikova B, Reynaud EG, Holden S, Jahr W, Haase R, Prakash K. Open microscopy in the life sciences: quo vadis? Nat Methods 2022; 19:1020-1025. [PMID: 36008630 DOI: 10.1038/s41592-022-01602-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Johannes Hohlbein
- Laboratory of Biophysics, Wageningen University & Research, Wageningen, The Netherlands. .,Microspectroscopy Research Facility, Wageningen University & Research, Wageningen, The Netherlands.
| | - Benedict Diederich
- Leibniz Institute for Photonic Technology, Jena, Germany.,Institute for Physical Chemistry, Friedrich-Schiller University, Jena, Germany
| | | | - Emmanuel G Reynaud
- School of Biomolecular and Biomedical Sciences, University College Dublin, Dublin, Ireland
| | - Séamus Holden
- School of Life Sciences, The University of Warwick, Coventry, UK
| | - Wiebke Jahr
- In-Vision Technologies AG, Guntramsdorf, Austria
| | - Robert Haase
- DFG Cluster of Excellence Physics of Life, TU Dresden, Dresden, Germany
| | - Kirti Prakash
- National Physical Laboratory, Teddington, UK.,Integrated Pathology Unit, Centre for Molecular Pathology, The Royal Marsden Trust and Institute of Cancer Research, Sutton, UK
| |
Collapse
|
20
|
Multi-Resin Masked Stereolithography (MSLA) 3D Printing for Rapid and Inexpensive Prototyping of Microfluidic Chips with Integrated Functional Components. BIOSENSORS 2022; 12:bios12080652. [PMID: 36005047 PMCID: PMC9405740 DOI: 10.3390/bios12080652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 11/16/2022]
Abstract
Stereolithography based 3D printing of microfluidics for prototyping has gained a lot of attention due to several advantages such as fast production, cost-effectiveness, and versatility over traditional photolithography-based microfabrication techniques. However, existing consumer focused SLA 3D printers struggle to fabricate functional microfluidic devices due to several challenges associated with micron-scale 3D printing. Here, we explore the origins and mechanism of the associated failure modes followed by presenting guidelines to overcome these challenges. The prescribed method works completely with existing consumer class inexpensive SLA printers without any modifications to reliably print PDMS cast microfluidic channels with channel sizes as low as ~75 μm and embedded channels with channel sizes as low ~200 μm. We developed a custom multi-resin formulation by incorporating Polyethylene glycol diacrylate (PEGDA) and Ethylene glycol polyether acrylate (EGPEA) as the monomer units to achieve micron sized printed features with tunable mechanical and optical properties. By incorporating multiple resins with different mechanical properties, we were able to achieve spatial control over the stiffness of the cured resin enabling us to incorporate both flexible and rigid components within a single 3D printed microfluidic chip. We demonstrate the utility of this technique by 3D printing an integrated pressure-actuated pneumatic valve (with flexible cured resin) in an otherwise rigid and clear microfluidic device that can be fabricated in a one-step process from a single CAD file. We also demonstrate the utility of this technique by integrating a fully functional finger-actuated microfluidic pump. The versatility and accessibility of the demonstrated fabrication method have the potential to reduce our reliance on expensive and time-consuming photolithographic techniques for microfluidic chip fabrication and thus drastically lowering our barrier to entry in microfluidics research.
Collapse
|
21
|
Matsui T, Fujiwara D. Optical sectioning robotic microscopy for everyone: the structured illumination microscope with the OpenFlexure stages. OPTICS EXPRESS 2022; 30:23208-23216. [PMID: 36225006 DOI: 10.1364/oe.461910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 05/30/2022] [Indexed: 06/16/2023]
Abstract
We report on the 3D-printed structured illumination microscope (SIM) with optical sectioning capability. Optically sectioned images are obtained by projecting a single-spatial-frequency grid pattern onto the specimen and recording three images with the grid pattern at different spatial phases, and then post-processing with simple mathematics. For the precise actuation of the grid for the structured illumination and the positioning of the sample, stages of the open-sourced, 3D-printable OpenFlexure families, which are capable of highly precise positioning control of tens of nanometers based on the flexure mechanism of the flexible plastics, are utilized. Our system has optical sectioning strength of a few microns, which is equivalent to that achievable with the confocal microscopes. The operation of our system can be automated with the Raspberry Pi and can be remotely operated from a PC via a wireless local area network.
Collapse
|
22
|
Munck S, Cawthorne C, Escamilla‐Ayala A, Kerstens A, Gabarre S, Wesencraft K, Battistella E, Craig R, Reynaud EG, Swoger J, McConnell G. Challenges and advances in optical 3D mesoscale imaging. J Microsc 2022; 286:201-219. [PMID: 35460574 PMCID: PMC9325079 DOI: 10.1111/jmi.13109] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 03/02/2022] [Accepted: 04/14/2022] [Indexed: 12/14/2022]
Abstract
Optical mesoscale imaging is a rapidly developing field that allows the visualisation of larger samples than is possible with standard light microscopy, and fills a gap between cell and organism resolution. It spans from advanced fluorescence imaging of micrometric cell clusters to centimetre-size complete organisms. However, with larger volume specimens, new problems arise. Imaging deeper into tissues at high resolution poses challenges ranging from optical distortions to shadowing from opaque structures. This manuscript discusses the latest developments in mesoscale imaging and highlights limitations, namely labelling, clearing, absorption, scattering, and also sample handling. We then focus on approaches that seek to turn mesoscale imaging into a more quantitative technique, analogous to quantitative tomography in medical imaging, highlighting a future role for digital and physical phantoms as well as artificial intelligence.
Collapse
Affiliation(s)
- Sebastian Munck
- VIB‐KU Leuven Center for Brain & Disease ResearchLight Microscopy Expertise Unit & VIB BioImaging CoreLeuvenBelgium
- KU Leuven Department of NeurosciencesLeuven Brain InstituteLeuvenBelgium
| | | | - Abril Escamilla‐Ayala
- VIB‐KU Leuven Center for Brain & Disease ResearchLight Microscopy Expertise Unit & VIB BioImaging CoreLeuvenBelgium
- KU Leuven Department of NeurosciencesLeuven Brain InstituteLeuvenBelgium
| | - Axelle Kerstens
- VIB‐KU Leuven Center for Brain & Disease ResearchLight Microscopy Expertise Unit & VIB BioImaging CoreLeuvenBelgium
- KU Leuven Department of NeurosciencesLeuven Brain InstituteLeuvenBelgium
| | - Sergio Gabarre
- VIB‐KU Leuven Center for Brain & Disease ResearchLight Microscopy Expertise Unit & VIB BioImaging CoreLeuvenBelgium
- KU Leuven Department of NeurosciencesLeuven Brain InstituteLeuvenBelgium
| | | | | | - Rebecca Craig
- Department of Physics, SUPAUniversity of StrathclydeGlasgowUK
| | - Emmanuel G. Reynaud
- School of Biomolecular and Biomedical ScienceUniversity College DublinDublinBelfieldIreland
| | - Jim Swoger
- European Molecular Biology Laboratory (EMBL) BarcelonaBarcelonaSpain
| | - Gail McConnell
- Department of Physics, SUPAUniversity of StrathclydeGlasgowUK
| |
Collapse
|
23
|
The LEGO® brick road to open science and biotechnology. Trends Biotechnol 2022; 40:1073-1087. [DOI: 10.1016/j.tibtech.2022.02.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 02/04/2022] [Accepted: 02/11/2022] [Indexed: 11/19/2022]
|