A5000323445- 3D Printing in Biomedical Research
- Additive Manufacturing and 3D Printing Technologies
- Metallurgy and Material Forming
- Innovative Microfluidic and Catalytic Techniques Innovation
- Metal Forming Simulation Techniques
- Cellular and Composite Structures
- Polymer Foaming and Composites
- biodegradable polymer synthesis and properties
- Advanced Materials and Mechanics
- Nonlinear Optical Materials Studies
- Advanced machining processes and optimization
- Photopolymerization techniques and applications
- Polymer crystallization and properties
- Electrospun Nanofibers in Biomedical Applications
- Polymer Nanocomposites and Properties
- Carbon Nanotubes in Composites
- Polymer composites and self-healing
- Force Microscopy Techniques and Applications
- Carbon dioxide utilization in catalysis
- Material Dynamics and Properties
- Microfluidic and Capillary Electrophoresis Applications
- Model Reduction and Neural Networks
- Rheology and Fluid Dynamics Studies
- Tribology and Wear Analysis
- Mechanical and Optical Resonators
Universitätsmedizin Göttingen
2022-2024
University of Göttingen
2022-2024
Eindhoven University of Technology
2024
University of Bayreuth
2017-2023
Sharif University of Technology
2011-2021
Massachusetts Institute of Technology
2018
Brigham and Women's Hospital
2018
Harvard University
2018
Harvard–MIT Division of Health Sciences and Technology
2018
A stereolithography-based bioprinting platform for multimaterial fabrication of heterogeneous hydrogel constructs is presented. Dynamic patterning by a digital micromirror device, synchronized moving stage and microfluidic device containing four on/off pneumatic valves, used to create 3D constructs. The novel capable fast switching between different (cell-loaded) bioinks, achieve layer-by-layer bioprinting. Compared conventional bioprinters, the system provides unique advantage capability at...
Abstract 4D printing recently emerges as an exciting evolution of conventional 3D printing, where a printed construct can quickly transform in response to specific stimulus switch between temporary variable state and original state. In this work, photocrosslinkable polyethylene–glycol polyurethane ink is synthesized for light‐assisted smart materials. The molecular weight distribution the monomers tunable by adjusting copolymerization reaction time. Digital light processing (DLP) technique...
Two-photon polymerization (TPP) uses nonlinear light interactions in photo-cross-linkable precursors to create high-resolution (∼100 nm) structures and high dimensional fidelity. Using a near-infrared source TPP results less scattering higher penetration depth, making it attractive for creating biological models tissue scaffolds. Due unmatched flexibility spatial resolution, they range from microvascular constructs microneedles stents. This review reviews the working principles current inks...
Abstract Microfluidic devices have been widely used for gene analysis, immunoassays, organ-on-chip technology, cell engineering, and disease modeling. Their integration into high throughput screening (HTS) platforms has led to large-scale testing of various biological chemical agents. This brief review discusses existing microfluidic HTS modalities, including the droplet mode, perfusion array-based in active or passive designs, by exploring their fabrication methods key design features. The...
Purpose Hexagonal honeycombs with meso-metric cell size show excellent load bearing and energy absorption potential, which make them attractive in many applications. However, owing to their bend-dominated structure, are susceptible deformation localization. The purpose of this study is provide insight about shear band propagation struts 3D-printed its relation the achieved macroscopic mechanical behavior. Design/methodology/approach unit models by fused deposition modeling (FDM). samples...
A stereolithography-based bioprinting platform for multimaterial fabrication of heterogeneous tissue constructs is developed in article number 1800242, by Yu Shrike Zhang, Ali Khademhosseini, and co-workers. This realized through dynamic patterning a digital micro-mirror device synchronized moving stage microfluidic containing digitally controllable pneumatic valves. The system provides robust high-fidelity microstructures on-demand numerous biomedical applications, otherwise not readily...
A set of complementary experiments are used for the first time to elucidate interrelation between mechanical properties, strain field, and free volume evolution during non-homogenous compression a glassy polymer.Two sets quenched annealed polystyrene samples, having different histories, notched exposed compression.The variation both field measured on microscopic scale via digital image correlation in case Doppler broadening spectroscopy positron annihilation line measurements.Eventually,...
Purpose – The purpose of this paper is to propose a mathematical model estimate required energy and temperature distribution during cold extrusion process.
Understanding the concept of rheology in polymer melts with dissolved gases like CO2 is crucial development high quality foams which are commonly manufactured by foam extrusion processes. The crystallization and rheological properties melt significantly affected gas, acts as a blowing agent at same time plasticizer. Moreover, gas-loaded influence on efficient design dies toward production popular homogenous lightweight foams. This chapter will discuss common methods to measure these example...
Here I introduce an automatic approach to determine the material flow patterns during deformation process using artificial neural networks (ANN). Since deriving and calibrating complex mathematical models for prediction of power requirements in each individual is inconvenient, generality streamline field method has been limited. propose build calibrate streamlines with ANN. The coordinates specific points within region were used as input stream function values on output dataset ANN training...