scholarly journals Pickering emulgels reinforced with host-guest supramolecular inclusion complexes for high fidelity direct ink writing

2022 ◽  
Author(s):  
Bo Pang ◽  
Rubina Ajdary ◽  
Markus Antonietti ◽  
Orlando J. Rojas ◽  
Svitlana Filonenko
Keyword(s):  
Rheological Properties ◽  
Inclusion Complexes ◽  
Structural Integrity ◽  
High Fidelity ◽  
Pickering Emulsions ◽  
Direct Ink Writing ◽  
On Demand

Direct ink writing (DIW) of Pickering emulsions offers great potential for constructing on-demand objects. However, the rheological properties of fluid emulsions greatly undermines the shape fidelity and structural integrity of...

scholarly journals Isochoric supercooled preservation and revival of human cardiac microtissues

2021 ◽  
Author(s):  
Matthew J. Powell-Palm ◽  
Verena Charwat ◽  
Berenice Charrez ◽  
Brian A Siemons ◽  
Kevin E. Healy ◽  
...  
Keyword(s):  
Pluripotent Stem Cells ◽  
Organ Preservation ◽  
Drug Exposure ◽  
Structural Integrity ◽  
Ex Vivo ◽  
Three Dimensional ◽  
Robust Method ◽  
On Demand ◽  
Engineered Tissues ◽  
Induced Pluripotent

Low-temperature ex vivo preservation and tissue engineering based on human induced pluripotent stem cells (hiPSC) represent two of the most promising routes towards on-demand access to organs for transplantation. While these fields are often considered divergent from one another, advances in both fields present critical new opportunities for crossover. Herein we demonstrate the first-ever sub-zero centigrade preservation and revival of autonomously beating three-dimensional hiPSC-derived cardiac microtissues via isochoric supercooling, without the use of chemical cryoprotectants. We show that these tissues can cease autonomous beating during preservation and resume it after warming, that the supercooling process does not affect sarcomere structural integrity, and that the tissues maintain responsiveness to drug exposure following revival. Our work suggests both that functional three dimensional (3D) engineered tissues may provide an excellent high-content, low-risk testbed to study organ preservation in a genetically human context, and that isochoric supercooling may provide a robust method for preserving and reviving engineered tissues themselves.

scholarly journals On-Demand Semiconductor Source of Entangled Photons Which Simultaneously Has High Fidelity, Efficiency, and Indistinguishability

2019 ◽  
Vol 122 (11) ◽  
Author(s):  
Hui Wang ◽  
Hai Hu ◽  
T.-H. Chung ◽  
Jian Qin ◽  
Xiaoxia Yang ◽  
...  
Keyword(s):  
High Fidelity ◽  
Entangled Photons ◽  
On Demand

Concentrated Pickering emulsions stabilised by hemp globulin–caseinate nanoparticles: tuning the rheological properties by adjusting the hemp globulin : caseinate ratio

2020 ◽  
Vol 11 (11) ◽  
pp. 10193-10204
Author(s):  
Chih-Chieh Chuang ◽  
Aiqian Ye ◽  
Skelte G. Anema ◽  
Simon M. Loveday
Keyword(s):  
Rheological Properties ◽  
Short Range ◽  
Sodium Caseinate ◽  
Pickering Emulsions ◽  
Oil Droplets

Nanoparticles composed of hemp globulins (HG) and sodium caseinate (SC) make the emulsion more solid-like after storage due to stronger short-range attractive forces between nanoparticles and oil droplets.

A Flexible Riser Digital Twin for Real-Time Monitoring and Asset Management

2021 ◽  
Author(s):  
Gabriel Rombado ◽  
Hema Wadhwa ◽  
Nathan Cooke ◽  
Dharma Pasala ◽  
Mike Paulin ◽  
...  
Keyword(s):  
Finite Element ◽  
Real Time ◽  
Asset Management ◽  
Structural Integrity ◽  
Element Model ◽  
Successful Implementation ◽  
High Fidelity ◽  
Efficient Computation ◽  
Flexible Riser ◽  
Digital Twin

A real-time understanding of the structural integrity of flexible risers is critical to avoiding failures as well as unnecessary and costly replacements. Accurate and efficient computation of tensile armor wire stress time-histories is the key to enabling the implementation of a flexible riser digital twin. Accuracy requires capturing the nonlinear kinematics of the flexible’s helically contra-wound tensile armor layers and their interaction with the other metallic and thermo-plastic layers in a dynamic simulation. While it is generally accepted that high-fidelity 3D finite element models best capture the complex kinematics required to produce accurate stresses, the main issue is that simulation time remains prohibitive, for example, a single bending cycle on modern day multi-core computers typically requires 24-48 hours. Therefore, any successful implementation of a flexible riser digital twin requires an accelerated solver capable of real-time computation of 1000s of bending cycle inputs into the high-fidelity finite element model. This paper demonstrates a flexible riser digital twin applications centered around the accelerated solver FLEXAS.

scholarly journals A Comparative Study of a 3D Bioprinted Gelatin-Based Lattice and Rectangular-Sheet Structures

Gels ◽  
2018 ◽  
Vol 4 (3) ◽  
pp. 73 ◽  
Author(s):  
Shweta Anil Kumar ◽  
Nishat Tasnim ◽  
Erick Dominguez ◽  
Shane Allen ◽  
Laura Suggs ◽  
...  
Keyword(s):  
Comparative Study ◽  
Rheological Properties ◽  
Lattice Structure ◽  
Lower Number ◽  
Great Promise ◽  
High Fidelity ◽  
Complex Structures ◽  
Layer By Layer ◽  
3D Bioprinting ◽  
Number Of Cells

3D bioprinting holds great promise in the field of regenerative medicine as it can create complex structures in a layer-by-layer manner using cell-laden bioinks, making it possible to imitate native tissues. Current bioinks lack both high printability and biocompatibility required in this respect. Hence, the development of bioinks that exhibit both properties is needed. In our previous study, a furfuryl-gelatin-based bioink, crosslinkable by visible light, was used for creating mouse mesenchymal stem cell-laden structures with a high fidelity. In this study, lattice mesh geometries were printed in a comparative study to test against the properties of a traditional rectangular-sheet. After 3D printing and crosslinking, both structures were analysed for swelling and rheological properties, and their porosity was estimated using scanning electron microscopy. The results showed that the lattice structure was relatively more porous with enhanced rheological properties and exhibited a lower degradation rate compared to the rectangular-sheet. Further, the lattice allowed cells to proliferate to a greater extent compared to the rectangular-sheet, which initially retained a lower number of cells. All of these results collectively affirmed that the lattice poses as a superior scaffold design for tissue engineering applications.

Inclusion complexes dispersed in polystyrene-based labels for fruit ripening on demand

2017 ◽  
Vol 53 (2) ◽  
pp. 389-394 ◽  
Author(s):  
Luigi C. Capozzi ◽  
Marco Bazzano ◽  
Marco Sangermano ◽  
Roberto Pisano
Keyword(s):  
Inclusion Complexes ◽  
Fruit Ripening ◽  
On Demand

Experimental Study of Impact Modulation for Quantifying Loose Bolt Torque in On-Demand Satellites

2010 ◽  
Author(s):  
Janette L. Jaques ◽  
Douglas E. Adams ◽  
Derek Doyle ◽  
Whitney Reynolds
Keyword(s):  
Experimental Study ◽  
Structural Integrity ◽  
Analytical Models ◽  
Time Constraints ◽  
Variable Geometry ◽  
Bolted Joint ◽  
Rapid Testing ◽  
Satellite Structure ◽  
On Demand ◽  
Loose Bolt Detection

The development of on-demand satellites has created the need for methods that quickly assess the structural integrity of the system. In particular, because of rapid testing and assembly, workmanship errors such as loose bolts within the satellite structure are a concern. Current methods of loose bolt detection, which often rely on baseline data or analytical models, are not practical due to the variable geometry of the satellites and the time constraints on testing. The method of impact modulation is a nonlinear vibration method which is quick to perform and is robust to changes in the geometry of the structure. This paper presents the results of applying impact modulation to a simplified structure used to model a single bolted joint within a satellite. Results show that impact modulation can distinguish changes in torque within the bolted joint. In addition, several examples of how the underlying linear characteristics of the system affect impact modulation results are given.

Evaluation of the repartition of the particles in Pickering emulsions in relation with their rheological properties

2021 ◽  
Author(s):  
Santiago F. Velandia ◽  
Philippe Marchal ◽  
Cécile Lemaitre ◽  
Véronique Sadtler ◽  
Thibault Roques-Carmes
Keyword(s):  
Rheological Properties ◽  
Pickering Emulsions
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