降伏応力粘弾性流体の高精度高速プリンティング手法の開発

在过去的两年里，我一直专注于探索粘弹性流体的行为，特别是它们由于表面张力而形成稳定的液体桥。通过高速成像和数值模拟，我发现扭转可以通过一种称为边缘断裂的机制破坏这些桥梁。这一发现可以提高电子包装、食品工程和增材制造等各种行业的流体分配效率。这一发现超出了简单的粘弹性流体更复杂的触变性弹粘塑性（TEVP）流体，显示其潜力被纳入到改进的点胶协议，为现实世界的工业fluids.I还深入研究了边缘断裂的问题，作为一个不良的现象，在流变测量。我证明了用一种无毒的液态金属Galinstan密封流体的自由表面可以延缓边缘断裂。这种简单而有效的解决方案扩展了可测量的剪切速率范围，为更广泛的复杂流体流变学研究提供了宝贵的工具。总体而言，我的研究有助于更深入地了解粘弹性流体的行为，并为他们的操作和测量所面临的挑战提供了实用的解决方案。

Over the past two years, I've focused on exploring the behaviors of viscoelastic fluids, especially their formation into stable liquid bridges due to surface tension. Through high-speed imaging and numerical simulations, I have found that torsion can destabilize these bridges through a mechanism called edge fracture. This finding may enhance the efficiency of fluid dispensing in various industries, such as electronic packaging, food engineering, and additive manufacturing. This discovery extends beyond simple viscoelastic fluids to more complex thixotropic elastoviscoplastic (TEVP) fluids, showing its potential to be incorporated into improved dispensing protocols for real-world industrial fluids.I have also delved into the issue of edge fracture as an undesirable phenomenon in rheological measurements. I demonstrated that sealing the fluid's free surface with Galinstan, a nontoxic liquid metal, can delay edge fracture. This simple yet effective solution extends the measurable shear rate range, providing a valuable tool for the broader rheological study of complex fluids.Overall, my research contributes to a deeper understanding of viscoelastic fluid behavior and offers practical solutions to the challenges faced in their manipulation and measurement.