High-resolution 3D printing for healthcare underpinned by small-scale fluidics

Fang, Feihuang; Aabith, Saja; Homer‐Vanniasinkam, Shervanthi; Tiwari, Manish K.

doi:10.1016/b978-0-08-100717-4.00023-5

Cited by 26 publications

(16 citation statements)

References 130 publications

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“…A potential classification can be done based on the type of instrumented devices: Wearable, Portable, and Stationary devices. Wearable devices, as the name implies, are integrated into wearable objects or directly with the body [26]. Portable devices are those that may be carried around, such as a smartphone.…”

Section: A Taxonomymentioning

confidence: 99%

A Systematic Review of Sensor-Based Methodologies for Food Portion Size Estimation

Raju

Sazonov

2021

IEEE Sensors J.

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Food portion size estimation (FPSE) is critical in dietary assessment and energy intake estimation. Traditional methods such as visual estimation are now replaced by faster, more accurate sensor-based methods. This paper presents a comprehensive review of the use of sensor methodologies for portion size estimation. The review was conducted using the PRISMA guidelines and full texts of 67 scientific articles were reviewed. The contributions of this paper are threefold: i) A taxonomy for sensor-based (SB) FPSE methods was identified, classifying the sensors (as wearable, portable and stationary) and the methodology (as direct and indirect). ii) A novel comprehensive review of the state-of-theart SB-FPSE methods was conducted and 5 sensor modalities (Acoustic, Strain, Imaging, Weighing, and Motion sensors) were identified. iii) The accuracy of portion size estimation and the applicability to free-living conditions of these SB-FPSE methods were assessed. This article concludes with a discussion of challenges and future trends of SB-FPSE.

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Section: A Taxonomymentioning

confidence: 99%

A Systematic Review of Sensor-Based Methodologies for Food Portion Size Estimation

Raju

Sazonov

2021

IEEE Sensors J.

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“…Wearable sensors, just as the name implies, are integrated directly with the body or into wearable objects in order to help monitor the health and provide clinically relevant data for care (see Figure 11) [146]. Wearable Internet of things sensors can already measure physiological (blood pressure [147], heart rate [147], heart rate variability (HRV) [148], skin conductance [148,149], cortisol [150,151], pupil diameter [152]) or behavioural markers for stress, anxiety and depression [153].…”

Section: Smart Wearablesmentioning

confidence: 99%

A Review of the Internet of Floods: Near Real-Time Detection of a Flood Event and Its Impact

Ackere

Verbeurgt

Sloover

et al. 2019

Water

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Worldwide, flood events frequently have a dramatic impact on urban societies. Time is key during a flood event in order to evacuate vulnerable people at risk, minimize the socio-economic, ecologic and cultural impact of the event and restore a society from this hazard as quickly as possible. Therefore, detecting a flood in near real-time and assessing the risks relating to these flood events on the fly is of great importance. Therefore, there is a need to search for the optimal way to collect data in order to detect floods in real time. Internet of Things (IoT) is the ideal method to bring together data of sensing equipment or identifying tools with networking and processing capabilities, allow them to communicate with one another and with other devices and services over the Internet to accomplish the detection of floods in near real-time. The main objective of this paper is to report on the current state of research on the IoT in the domain of flood detection. Current trends in IoT are identified, and academic literature is examined. The integration of IoT would greatly enhance disaster management and, therefore, will be of greater importance into the future.

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“…There are a number of key challenges that have dogged the development of highresolution printing. Firstly, such printing often requires flow through small capillaries and channels, where the pressure drop scales with ~D 4 (Poiseuille relationship, c.f. Equation 3.3 below) [4], with D being the relevant length scale, e.g.…”

Section: Challenges Of High-resolution 3d Printingmentioning

confidence: 99%

“…To a first approximation the pressure drop through a nozzle can be understood by considering the nozzle to be a uniform diameter capillary. With this approximation, the flow rate and pressure drop relationship for a power law fluid (a common ink type) can be written as [4]:…”

Section: Ink Rheology and Pressure Dropmentioning

confidence: 99%

Drops, Jets and High-Resolution 3D Printing: Fundamentals and Applications

Caulfield

Fang

Tiwari

2017

Energy, Environment, and Sustainability

Self Cite

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The ability to print high-resolution (< 10 µm) three-dimensional (3D) features is important in numerous existing and emerging applications such as tissue engineering, nanoelectronics, photovoltaics, optics, biomedical devices etc. The current chapter is focused on a subset of high-resolution printing techniques that exploit micro and nanofluidics features to attain high resolution. Here these approaches are referred as fluidics assisted high-resolution 3D printing. Salient examples of such techniques are electrohydrodynamic printing, direct-write assembly, aerosol jet printing, etc. The chapter starts with a brief introduction and discussion on the challenges of high-resolution printing. This is followed by a section on fundamental mechanisms of droplet, jet and filament formations, and their role in deciding the print resolution. Commonalities between different printing techniques (e.g. the physics of jet breakup and role of capillary stresses) are highlighted in order to provide a systematic understanding and context. Next the fluid mechanics features determining the print resolution and quality are discussed in detail. This includes sections on the role of ink rheology, evaporation rate, nozzle size, substrate and nozzle wetting properties (i.e. surface energy) and dynamic effects such as drop impact and spreading, stability of printed liquid lines and liquid filaments etc. Wherever relevant, literature on much more established inkjet printing techniques is also exploited to provide a context for the high-resolution printing and clarify the distinct benefits and challenges that emerge at progressively higher resolutions. In the wetting and surface energy section, features of dippen lithography and transfer printing, two popular techniques for two-dimensional high-resolution printing, are also briefly introduced for completeness. Lastly, the chapter ends with a summary and brief perspective on future research trends in this area.

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High-resolution 3D printing for healthcare underpinned by small-scale fluidics

Cited by 26 publications

References 130 publications

A Systematic Review of Sensor-Based Methodologies for Food Portion Size Estimation

A Systematic Review of Sensor-Based Methodologies for Food Portion Size Estimation

A Review of the Internet of Floods: Near Real-Time Detection of a Flood Event and Its Impact

Drops, Jets and High-Resolution 3D Printing: Fundamentals and Applications

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