A5021067826- Advanced Sensor and Energy Harvesting Materials
- Advanced Materials and Mechanics
- Additive Manufacturing and 3D Printing Technologies
- 3D Printing in Biomedical Research
- Pickering emulsions and particle stabilization
- Nanomaterials and Printing Technologies
- Photonic Crystals and Applications
- Modular Robots and Swarm Intelligence
- Nanofabrication and Lithography Techniques
- Innovative Microfluidic and Catalytic Techniques Innovation
- Polymer composites and self-healing
- Surface Modification and Superhydrophobicity
- Material Dynamics and Properties
- Advanced ceramic materials synthesis
- Innovations in Concrete and Construction Materials
- Physics of Superconductivity and Magnetism
- Electrospun Nanofibers in Biomedical Applications
- Dielectric materials and actuators
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Polymer Nanocomposites and Properties
- Renal and related cancers
- Electrowetting and Microfluidic Technologies
- Cellular and Composite Structures
- Magnetic properties of thin films
Harvard University
2016-2025
Massachusetts General Hospital
2023-2024
Inspire
2018-2024
Harvard University Press
2015-2024
Harvard Stem Cell Institute
2019-2024
Sandia National Laboratories
2002-2024
Freie Universität Berlin
2023
Wake Forest University
2023
Cardiff University
2023
Vanderbilt University Medical Center
2022
A new bioprinting method is reported for fabricating 3D tissue constructs replete with vasculature, multiple types of cells, and extracellular matrix. These intricate, heterogeneous structures are created by precisely co-printing materials, known as bioinks, in three dimensions. micro-engineered environments open avenues drug screening fundamental studies wound healing, angiogenesis, stem-cell niches. As a service to our authors readers, this journal provides supporting information supplied...
A new method, embedded-3D printing (e-3DP), is reported for fabricating strain sensors within highly conformal and extensible elastomeric matrices. e-3DP allows soft to be created in nearly arbitrary planar 3D motifs a programmable seamless manner. Several embodiments are demonstrated sensor performance characterized. As service our authors readers, this journal provides supporting information supplied by the authors. Such materials peer reviewed may re-organized online delivery, but not...
The ability to pattern materials in three dimensions is critical for several technological applications, including composites, microfluidics, photonics, and tissue engineering. Direct-write assembly allows one design rapidly fabricate complex 3D shapes without the need expensive tooling, dies, or lithographic masks. Here, recent advances direct ink writing are reviewed with an emphasis on push towards finer feature sizes. Opportunities challenges associated also highlighted.
A new epoxy-based ink is reported, which enables 3D printing of lightweight cellular composites with controlled alignment multiscale, high-aspectratio fiber reinforcement to create hierarchical structures inspired by balsa wood. Young's modulus values up 10 times higher than existing commercially available 3D-printed polymers are attainable, while comparable strength maintained.
Significance Current tissue manufacturing methods fail to recapitulate the geometry, complexity, and longevity of human tissues. We report a multimaterial 3D bioprinting method that enables creation thick tissues (>1 cm) replete with an engineered extracellular matrix, embedded vasculature, multiple cell types. These vascularized can be actively perfused growth factors for long durations (>6 wk) promote differentiation mesenchymal stem cells toward osteogenic lineage in situ. The...
Colloidal processing of ceramics is reviewed with an emphasis on interparticle forces, suspension rheology, consolidation techniques, and drying behavior. Particular attention given to the scientific concepts that underpin fabrication particulate‐derived ceramic components. The complex interplay between stability its structural evolution during colloidal highlighted.
3D interdigitated microbattery architectures (3D-IMA) are fabricated by printing concentrated lithium oxide-based inks. The microbatteries composed of interdigitated, high-aspect ratio cathode and anode structures. Our 3D-IMA, which exhibit high areal energy power densities, may find potential application in autonomously powered microdevices.
Flexible, stretchable, and spanning microelectrodes that carry signals from one circuit element to another are needed for many emerging forms of electronic optoelectronic devices. We have patterned silver by omnidirectional printing concentrated nanoparticle inks in both uniform high-aspect ratio motifs with minimum widths approximately 2 micrometers onto semiconductor, plastic, glass substrates. The can withstand repeated bending stretching large levels strain minimal degradation their...
3D biomimetic microvascular networks of nearly arbitrary design are patterned by omnidirectional printing a fugitive organic ink into photopolymerizable hydrogel matrix. This novel approach hinges critically on tailoring the chemical and rheological properties as well reservoir fluid filler. These hydrogel-based, constructs may find potential application in cell culture, tissue engineering, organ modeling, autonomic healing. Detailed facts importance to specialist readers published...
3D printing and numerical analysis are combined to design a new class of architected materials that contain bistable beam elements exhibit controlled trapping elastic energy. The proposed energy-absorbing structures reusable. Moreover, the mechanism energy absorption stems solely from structural geometry printed elements, is therefore both material- loading-rate independent.
The ability to pattern ceramic materials in three dimensions (3D) is critical for structural, functional, and biomedical applications. One facile approach direct ink writing (DIW), which 3D structures are built layer‐by‐layer through the deposition of colloidal‐ or polymer‐based inks. This allows one design rapidly fabricate complex shapes without need expensive tooling, dies, lithographic masks. In this feature article, we present both droplet‐ filament‐based DIW techniques. We focus on...
Engineering organ-specific tissues for therapeutic applications is a grand challenge, requiring the fabrication and maintenance of densely cellular constructs composed ~108 cells/ml. Organ building blocks (OBBs) patient-specific-induced pluripotent stem cell-derived organoids offer pathway to achieving with requisite density, microarchitecture, function. However, date, scant attention has been devoted their assembly into 3D tissue constructs. Here, we report biomanufacturing method...
Pen-on-paper flexible electronics are fabricated using a conductive silver ink-filled rollerball pen. This approach provides low-cost, portable route for fabricating text, electronic art, interconnects light emitting diode (LED) arrays, and three-dimensional (3D) antennas on paper. Detailed facts of importance to specialist readers published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by the authors. Please note:...
Liquid crystal elastomers (LCEs) are soft materials capable of large, reversible shape changes, which may find potential application as artificial muscles, robots, and dynamic functional architectures. Here, the design additive manufacturing LCE actuators (LCEAs) with spatially programed nematic order that exhibit reversible, repeatable contraction high specific work capacity reported. First, a photopolymerizable, solvent-free, main-chain ink is created via aza-Michael addition appropriate...
Mesoscale periodic structures have been fabricated via directed assembly of colloidal inks. Concentrated gels with tailored viscoelastic properties were designed to form self-supporting features. The inks deposited in a layer-by-layer sequence directly write the desired 3-D pattern. Periodic spanning features that vary between ∼100 μm and 1 mm assembled. Shear rate profiles calculated on basis measured rheological under slip no-slip boundary conditions during flow through cylindrical...
Hybrid 3D printing is a new method for producing soft electronics that combines direct ink writing of conductive and dielectric elastomeric materials with automated pick-and-place surface mount electronic components within an integrated additive manufacturing platform. Using this approach, insulating matrix electrode inks are directly printed in specific layouts. Passive active electrical then to produce the desired circuitry by using empty nozzle (in vacuum-on mode) pick up individual...
Three-dimensional models of kidney tissue that recapitulate human responses are needed for drug screening, disease modeling, and, ultimately, organ engineering. Here, we report a bioprinting method creating 3D renal proximal tubules in vitro fully embedded within an extracellular matrix and housed perfusable chips, allowing them to be maintained greater than two months. Their convoluted tubular architecture is circumscribed by tubule epithelial cells actively perfused through the open lumen....