Article
Multidisciplinary Sciences
Andrew F. Cheng, Harrison F. Agrusa, Brent W. Barbee, Alex J. Meyer, Tony L. Farnham, Sabina D. Raducan, Derek C. Richardson, Elisabetta Dotto, Angelo Zinzi, Vincenzo Della Corte, Thomas S. Statler, Steven Chesley, Shantanu P. Naidu, Masatoshi Hirabayashi, Jian-Yang Li, Siegfried Eggl, Olivier S. Barnouin, Nancy L. Chabot, Sidney Chocron, Gareth S. Collins, R. Terik Daly, Thomas M. Davison, Mallory E. DeCoster, Carolyn M. Ernst, Fabio Ferrari, Dawn M. Graninger, Seth A. Jacobson, Martin Jutzi, Kathryn M. Kumamoto, Robert Luther, Joshua R. Lyzhoft, Patrick Michel, Naomi Murdoch, Ryota Nakano, Eric Palmer, Andrew S. Rivkin, Daniel J. Scheeres, Angela M. Stickle, Jessica M. Sunshine, Josep M. Trigo-Rodriguez, Jean-Baptiste Vincent, James D. Walker, Kai Wuennemann, Yun Zhang, Marilena Amoroso, Ivano Bertini, John R. Brucato, Andrea Capannolo, Gabriele Cremonese, Massimo Dall'Ora, Prasanna J. D. Deshapriya, Igor Gai, Pedro H. Hasselmann, Simone Ieva, Gabriele Impresario, Stavro L. Ivanovski, Michele Lavagna, Alice Lucchetti, Elena M. Epifani, Dario Modenini, Maurizio Pajola, Pasquale Palumbo, Davide Perna, Simone Pirrotta, Giovanni Poggiali, Alessandro Rossi, Paolo Tortora, Marco Zannoni, Giovanni Zanotti
Summary: The NASA DART mission successfully conducted a kinetic impact on the asteroid Dimorphos, resulting in a significant reduction in its orbital velocity. This experiment validated kinetic impact as an effective method for asteroid deflection, as it demonstrated enhanced momentum transfer due to the recoil from impact ejecta streams. The findings suggest that the DART mission was highly effective in deflecting the asteroid Dimorphos.
Article
Engineering, Aerospace
Lansing S. Horan, Darren E. Holland, Megan Bruck Syal, James E. Bevins, Joseph Wasem
Summary: This study examined how the neutron energy output from a nuclear device affects asteroid deflection. Changing neutron energy was found to have up to a 70% impact on deflection performance, depending on the energy deposition and coupling efficiency.
Article
Engineering, Aerospace
Nahum Melamed, Tom Heinsheimer
Summary: Traditional methods of asteroid trajectory modification rely on impact or nuclear detonation, while centrifugal propulsion offers an alternative approach. The centrifuge system lands on the asteroid and gradually adjusts the trajectory using momentum transfer. This method allows for flexibility in operation parameters and has the potential to be used in planetary defense and other space missions.
Article
Materials Science, Multidisciplinary
Prahlad K. Baruah, Arpita Nath, Ashwini K. Sharma, Alika Khare
Summary: Pulsed laser ablation in liquid is an efficient technique for synthesizing nanoparticles in colloidal form. This study investigates the dynamics of cavitation bubbles and shock waves generated during pulsed laser ablation of copper in distilled water using shadowgraphy and beam deflection techniques. The results show that the bubbles initially grow and then compress, with secondary oscillations observed at higher laser fluence. Two fluid dynamical models are applied to analyze the thermodynamic properties of the bubbles, and the dynamics of shock waves are studied through beam deflection. The extreme pressure and temperature values obtained at the copper-distilled water interface can contribute to understanding the nucleation of nanoparticles.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Engineering, Aerospace
J. M. Gambi, M. L. Garcia del Pino, J. Mosser, E. B. Weinmueller
Summary: The method introduces a computational procedure using post-Newtonian data to establish formations and control spacecraft swarms for performing effective laser ablation to deflect near-Earth asteroids.
Article
Materials Science, Multidisciplinary
Kavil Mehta, Swetapuspa Soumyashree, Jalaja Pandya, Parul Singh, Rajesh K. Kushawaha, Prashant Kumar, Satyam Shinde, Jhuma Saha, Prahlad K. Baruah
Summary: Pulsed laser ablation in liquid (PLAL) has been widely used for efficient fabrication of nanoparticles (NPs). The present study investigates the effect of viscosity on NP size by conducting experiments in three different liquids. The results show that the size of NPs significantly depends on the viscosity of the liquid.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Engineering, Aerospace
Elisa Simo-Soler, Eloy Pena-Asensio
Summary: Throughout history, humans have sought safety across national borders, but unexpected external threats pose a different scenario. A warning of asteroid impact represents a historic change, requiring consideration of natural disaster analogies and legal regulations. Cooperative efforts are needed to improve international law and protect humanity.
Article
Multidisciplinary Sciences
Jiancai Xu, Leejin Bae, Mohamed Ezzat, Hyung Taek Kim, Jeong Moon Yang, Sang Hwa Lee, Jin Woo Yoon, Jae Hee Sung, Seong Ku Lee, Liangliang Ji, Baifei Shen, Chang Hee Nam
Summary: A localized nanoparticle insertion scheme has been developed to decouple electron injection from laser evolution in laser wakefield acceleration. Experimental results show that controllable electron injection, localized within a short range of 100 μm, can be achieved by the nanoparticle insertion method. The optimized ablation laser energy and temporal delay result in electron bunches with a beam charge above 300 pC and a divergence of around 12 mrad, with an injection probability over 90%. This method provides a stable high-charge injection approach for electron sources in low-density plasmas, avoiding the disturbing effects of the electron injection process on laser evolution.
SCIENTIFIC REPORTS
(2022)
Article
Optics
Sungkwon Shin, Woojin Lee, Jong Kab Park, Doh-Hoon Kim
Summary: This paper presents a femtosecond laser processing method to precisely control taper angles of micro-holes. The ablation depth depends on the ablation rate, number of repetitions for scanning, beam size, and spot overlap ratio, which in turn influence the taper angles. We developed a multilevel material processing method involving analytical models to achieve desired taper angles on 64FeNi alloy sheets.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Bo Sung Shin, Sungmoo Hong, Jinsu Kim, Junuk Lee, Sungyeob Jung
Summary: This study investigates the characteristics of laser-induced graphene (LIG) generated on a polyimide film with different laser processing parameters. The surface morphology of LIGs is found to be related to their performance. By altering the processing parameters, LIGs with different colors and shapes can be produced, which has significant implications for sensor applications.
ACS MATERIALS LETTERS
(2023)
Article
Optics
Yunhui Xie, Matthew Praeger, James A. Grant-Jacob, Robert W. Eason, Ben Mills
Summary: Laser processing techniques are crucial in modern manufacturing, but existing toolpath design processes require manual labor and lack the ability to compensate for machining errors. This research demonstrates a novel laser machining method that utilizes reinforcement learning to control and supervise the process in real time, enabling the machining of arbitrary predefined patterns while detecting and compensating for incorrectly executed actions.
Article
Multidisciplinary Sciences
Michelangelo-Santo Gulino, Mara Bruzzi, James Norbert Caron, Dario Vangi
Summary: Gas-Coupled Laser Acoustic Detection (GCLAD) is a non-contact ultrasonic detection technique used for inspecting mechanical components. It differs from other optical detection instruments as it is a line detection system that can reduce overall testing time and simplify automated monitoring layouts.
SCIENTIFIC REPORTS
(2022)
Article
Optics
Keiichi Bamoto, Haruyuki Sakurai, Shuntaro Tani, Yohei Kobayashi
Summary: This study demonstrated the use of Bayesian optimization as an efficient method to find the optimal conditions for laser processing. It showed that the optimum set of parameters to achieve a desired shape can be obtained autonomously and more than an order of magnitude faster than with a simple grid-search.
Article
Chemistry, Analytical
Jamario R. Skeete, Jeanne M. Du-Fay-de-Lavallaz, David Kenigsberg, Carlos Macias, Jeffrey R. Winterfield, Parikshit S. Sharma, Richard G. Trohman, Henry D. Huang
Summary: Catheter-based ablation techniques, including the use of laser energy, play a crucial role in atrial fibrillation (AF) management. While laser balloon ablation may not be as widely used as other techniques, advancements in product design and procedural protocols have shown it to be equally safe and effective. Strategies to improve procedural efficiency and decrease radiation exposure make laser balloon ablation an increasingly promising option.
Article
Optics
Daniel Holder, Rudolf Weber, Christoph Roecker, Gerhard Kunz, David Bruneel, Martin Delaigue, Thomas Graf, Marwan Abdou Ahmed
Summary: The study reported on high-quality, high-throughput laser milling of silicon with a sub-ps laser delivering over 1 kW of average power. By adjusting the processing strategy and parameters, smooth surfaces with low roughness were achieved while maintaining a high material removal rate.
Article
Engineering, Aerospace
Federico Zuiani, Alison Gibbings, Massimo Vetrisano, Francesco Rizzi, Cesar Martinez, Massimiliano Vasile
Article
Engineering, Aerospace
Alison Gibbings, Massirniliano Vasile, Ian Watson, John-Mark Hopkins, David Burns
Article
Engineering, Aerospace
Christie Alisa Maddock, Lorenzo Ricciardi, Michael West, Joanne West, Konstantinos Kontis, Sriram Rengarajan, David Evans, Andy Milne, Stuart McIntyre
Article
Engineering, Aerospace
Alessandro A. Quarta, Dario Izzo, Massimiliano Vasile
ADVANCES IN SPACE RESEARCH
(2013)
Article
Astronomy & Astrophysics
M. Vetrisano, W. Van der Weg, M. Vasile
CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY
(2012)
Article
Astronomy & Astrophysics
Federico Zuiani, Massimiliano Vasile, Alison Gibbings
CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY
(2012)
Article
Operations Research & Management Science
Federico Zuiani, Massimiliano Vasile
COMPUTATIONAL OPTIMIZATION AND APPLICATIONS
(2013)
Article
Engineering, Aerospace
Federico Zuiani, Massimiliano Vasile
INTERNATIONAL JOURNAL OF AEROSPACE ENGINEERING
(2012)
Article
Engineering, Aerospace
Lorenzo A. Ricciardi, Christie Alisa Maddock, Massimiliano Vasile
JOURNAL OF GUIDANCE CONTROL AND DYNAMICS
(2019)
Article
Mathematics
Lorenzo A. Ricciardi, Christie Alisa Maddock, Massimiliano Vasile
Summary: This study introduces a novel method for multi-objective optimization, utilizing the MODHOC algorithm to account for model uncertainties, and develops a quantification model for the uncertainty of atmospheric model parameters.
Article
Environmental Sciences
Andrew R. R. Wilson, Massimiliano Vasile, Christie Maddock, Keith Baker
Summary: Within the space sector, the application of E-LCA is becoming a credible method for quantifying environmental impacts, but it lacks alignment with triple-bottom-line sustainability. To address this, a new LCSA framework for space missions is presented in this article, aiming to integrate the three dimensions of sustainability. Based on a systematic literature review, the framework has been implemented in a life cycle database and tested on a mission concept to improve system-level design concepts and demonstrate the impact of sustainability principles. This framework enables the creation of sustainable space systems, technologies, and products that can justify and evidence their sustainability.
INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT
(2023)
Proceedings Paper
Computer Science, Artificial Intelligence
Christie Alisa Maddock, Edmondo Minisci
PROCEEDINGS OF 2016 IEEE SYMPOSIUM SERIES ON COMPUTATIONAL INTELLIGENCE (SSCI)
(2016)
Proceedings Paper
Computer Science, Artificial Intelligence
Lorenzo A. Ricciardi, Massimiliano Vasile, Christie Maddock
2016 IEEE CONGRESS ON EVOLUTIONARY COMPUTATION (CEC)
(2016)
