Browsing MIT Open Access Articles by Title
Now showing items 174-193 of 55846
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3D optical imagery for motion compensation in a limb ultrasound system
(SPIE, 2016-02)Conventional processes for prosthetic socket fabrication are heavily subjective, often resulting in an interface to the human body that is neither comfortable nor completely functional. With nearly 100% of amputees reporting ... -
3D pose estimation and segmentation using specular cues
(Institute of Electrical and Electronics Engineers, 2009-08)We present a system for fast model-based segmentation and 3D pose estimation of specular objects using appearance based specular features. We use observed (a) specular reflection and (b) specular flow as cues, which are ... -
3D Printed frames to enable reuse and improve the fit of N95 and KN95 respirators
(Springer Science and Business Media LLC, 2021-06)Background: In response to supply shortages caused by the COVID-19 pandemic, N95 filtering facepiece respirators (FFRs or “masks”), which are typically single-use devices in healthcare settings, are routinely being used ... -
3D Printed Multimaterial Microfluidic Valve
(Public Library of Science, 2016-08)We present a novel 3D printed multimaterial microfluidic proportional valve. The microfluidic valve is a fundamental primitive that enables the development of programmable, automated devices for controlling fluids in a ... -
3D printed multiplexed electrospinning sources for large-scale production of aligned nanofiber mats with small diameter spread
(IOP Publishing, 2017-09)We report the design, fabrication, and characterization of novel, low-cost, and modular miniaturized nanofiber electrospinning sources for the scalable production of non-woven aligned nanofiber mats with low diameter ... -
3D printed structures for modeling the Young’s modulus of bamboo parenchyma
(Elsevier BV, 2018-03)Bamboo is a sustainable, lightweight material that is widely used in structural applications. To fully develop micromechanical models for plants, such as bamboo, the mechanical properties of each individual type of tissue ... -
3D printing metals like thermoplastics: Fused filament fabrication of metallic glasses
(Elsevier, 2018-12-04)Whereas 3D printing of thermoplastics is highly advanced and can readily create complex geometries, 3D printing of metals is still challenging and limited. The origin of this asymmetry in technological maturity is the ... -
3D printing of conducting polymers
(Springer Science and Business Media LLC, 2020)© 2020, The Author(s). Conducting polymers are promising material candidates in diverse applications including energy storage, flexible electronics, and bioelectronics. However, the fabrication of conducting polymers has ... -
3D Printing Variable Stiffness Foams Using Viscous Thread Instability
(Nature Publishing Group, 2016-08)Additive manufacturing of cellular structures has numerous applications ranging from fabrication of biological scaffolds and medical implants, to mechanical weight reduction and control over mechanical properties. Various ... -
3D RNA-scaffolded wireframe origami
(Springer Science and Business Media LLC, 2023-01-24)<jats:title>Abstract</jats:title><jats:p>Hybrid RNA:DNA origami, in which a long RNA scaffold strand folds into a target nanostructure via thermal annealing with complementary DNA oligos, has only been explored to a limited ... -
3D shape perception from monocular vision, touch, and shape priors
(2018-10)Perceiving accurate 3D object shape is important for robots to interact with the physical world. Current research along this direction has been primarily relying on visual observations. Vision, however useful, has inherent ... -
A 3D stereo camera system for precisely positioning animals in space and time
(Springer Berlin Heidelberg, 2015-02)Here, we describe a portable stereo camera system that integrates a GPS receiver, an attitude sensor and 3D stereo photogrammetry to rapidly estimate the position of multiple animals in space and time. We demonstrate the ... -
3D Stereoscopic PIV visualization of the axisymmetric conical internal wave field generated by an oscillating sphere
(Springer-Verlag, 2013-02)To date, experimental studies of internal wave velocity fields have been limited to two-dimensional investigations of planar or axisymmetric systems. Here, we present results of the first three-dimensional stereoscopic ... -
3D structural patterns in scalable, elastomeric scaffolds guide engineered tissue architecture
(Wiley, 2013-08)Microfabricated elastomeric scaffolds with 3D structural patterns are created by semiautomated layer-by-layer assembly of planar polymer sheets with through-pores. The mesoscale interconnected pore architectures governed ... -
3D thermal analysis of a permanent magnet motor with cooling fans
(Zhejiang University Press, 2015-08)Overheating of permanent magnet (PM) machines has become a major technical challenge as it gives rise to magnet demagnetization, degradation of insulation materials, and loss of motor efficiency. This paper proposes a ... -
3D Tracking via Body Radio Reflections
(Association for Computing Machinery (ACM), 2014-04)This paper introduces WiTrack, a system that tracks the 3D motion of a user from the radio signals reflected off her body. It works even if the person is occluded from the WiTrack device or in a different room. WiTrack ... -
3D Ultrasound Imaging of Residual Limbs With Camera-Based Motion Compensation
(Institute of Electrical and Electronics Engineers (IEEE), 2019-02)Ultrasound is a cost-effective, readily available, and non-ionizing modality for musculoskeletal imaging. Though some research groups have pursued methods that involve submerging the transducer and imaged body segment into ... -
3D ultrastructure of the nuclear pore complex
(Elsevier, 2012-02)Nuclear pore complexes (NPCs) perforate the double-layered nuclear envelope and form the main gateway for molecular exchange between nucleus and cytoplasm of the eukaryotic cell. Because NPCs are extraordinarily complex ...
