David Veysset

All Publications

• Interferometric imaging of thermal expansion for temperature control in retinal laser therapy BIOMEDICAL OPTICS EXPRESS Veysset, D., Ling, T., Zhuo, Y., Pandiyan, V., Sabesan, R., Palanker, D. 2022; 13 (2): 728-743

  View details for DOI 10.1364/BOE.448803

  View details for Web of Science ID 000750862400003

• Interferometric imaging of thermal expansion for temperature control in retinal laser therapy. Biomedical optics express Veysset, D., Ling, T., Zhuo, Y., Pandiyan, V. P., Sabesan, R., Palanker, D. 2022; 13 (2): 728-743

  Abstract

  Precise control of the temperature rise is a prerequisite for proper photothermal therapy. In retinal laser therapy, the heat deposition is primarily governed by the melanin concentration, which can significantly vary across the retina and from patient to patient. In this work, we present a method for determining the optical and thermal properties of layered materials, directly applicable to the retina, using low-energy laser heating and phase-resolved optical coherence tomography (pOCT). The method is demonstrated on a polymer-based tissue phantom heated with a laser pulse focused onto an absorbing layer buried below the phantom's surface. Using a line-scan spectral-domain pOCT, optical path length changes induced by the thermal expansion were extracted from sequential B-scans. The material properties were then determined by matching the optical path length changes to a thermo-mechanical model developed for fast computation. This method determined the absorption coefficient with a precision of 2.5% and the temperature rise with a precision of about 0.2°C from a single laser exposure, while the peak did not exceed 8°C during 1 ms pulse, which is well within the tissue safety range and significantly more precise than other methods.

  View details for DOI 10.1364/BOE.448803

  View details for PubMedID 35284191

  View details for PubMedCentralID PMC8884207

• Melting and Ejecta Produced by High Velocity Microparticle Impacts of Steel on Tin JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME Lienhard, J., Veysset, D., Nelson, K. A., Schuh, C. A. 2021; 88 (11)

  View details for DOI 10.1115/1.4051593

  View details for Web of Science ID 000702456800004

• The effect of substrate temperature on the critical velocity in microparticle impact bonding APPLIED PHYSICS LETTERS Chaban, I., Sun, Y., Veysset, D., Nelson, K. A., Schuh, C. A. 2021; 119 (1)

  View details for DOI 10.1063/5.0055274

  View details for Web of Science ID 000691551300001

• Supersonic impact resilience of nanoarchitected carbon. Nature materials Portela, C. M., Edwards, B. W., Veysset, D., Sun, Y., Nelson, K. A., Kochmann, D. M., Greer, J. R. 2021

  Abstract

  Architected materials with nanoscale features have enabled extreme combinations of properties by exploiting the ultralightweight structural design space together with size-induced mechanical enhancement at small scales. Apart from linear waves in metamaterials, this principle has been restricted to quasi-static properties or to low-speed phenomena, leaving nanoarchitected materials under extreme dynamic conditions largely unexplored. Here, using supersonic microparticle impact experiments, we demonstrate extreme impact energy dissipation in three-dimensional nanoarchitected carbon materials that exhibit mass-normalized energy dissipation superior to that of traditional impact-resistant materials such as steel, aluminium, polymethyl methacrylate and Kevlar. In-situ ultrahigh-speed imaging and post-mortem confocal microscopy reveal consistent mechanisms such as compaction cratering and microparticle capture that enable this superior response. By analogy to planetary impact, we introduce predictive tools for crater formation in these materials using dimensional analysis. These results substantially uncover the dynamic regime over which nanoarchitecture enables the design of ultralightweight, impact-resistant materials that could open the way to design principles for lightweight armour, protective coatings and blast-resistant shields for sensitive electronics.

  View details for DOI 10.1038/s41563-021-01033-z

  View details for PubMedID 34168332

• Strong fatigue-resistant nanofibrous hydrogels inspired by lobster underbelly MATTER Ni, J., Lin, S., Qin, Z., Veysset, D., Liu, X., Sun, Y., Hsieh, A. J., Radovitzky, R., Nelson, K. A., Zhao, X. 2021; 4 (6): 1919-1934

  View details for DOI 10.1016/j.matt.2021.03.023

  View details for Web of Science ID 000657479300002

• Modelling of micro-particles perforations into human tissue surrogate: Numerical and analytical aspects EXTREME MECHANICS LETTERS Meng, S., Shen, J., Taddei, L., Lebaal, N., Veysset, D., Nelson, K. A., Roth, S. 2021; 45

  View details for DOI 10.1016/j.eml.2021.101299

  View details for Web of Science ID 000642811800002

• Bottom-up design toward dynamically robust polyurethane elastomers POLYMER Hsieh, A. J., Wu, Y., Hu, W., Mikhail, J. P., Veysset, D., Kooi, S. E., Nelson, K. A., Rutledge, G. C., Swager, T. M. 2021; 218

  View details for DOI 10.1016/j.polymer.2021.123518

  View details for Web of Science ID 000632416600002

• High-velocity micro-projectile impact testing APPLIED PHYSICS REVIEWS Veysset, D., Lee, J., Hassani, M., Kooi, S. E., Thomas, E. L., Nelson, K. A. 2021; 8 (1)

  View details for DOI 10.1063/5.0040772

  View details for Web of Science ID 000630164800001

• Imaging of photoacoustic-mediated permeabilization of giant unilamellar vesicles (GUVs). Scientific reports Pereira, D. A., Silva, A. D., Martins, P. A., Piedade, A. P., Martynowych, D., Veysset, D., Moreno, M. J., Serpa, C., Nelson, K. A., Arnaut, L. G. 2021; 11 (1): 2775

  Abstract

  Target delivery of large foreign materials to cells requires transient permeabilization of the cell membrane without toxicity. Giant unilamellar vesicles (GUVs) mimic the phospholipid bilayer of the cell membrane and are also useful drug delivery vehicles. Controlled increase of the permeability of GUVs is a delicate balance between sufficient perturbation for the delivery of the GUV contents and damage to the vesicles. Here we show that photoacoustic waves can promote the release of FITC-dextran or GFP from GUVs without damage. Real-time interferometric imaging offers the first movies of photoacoustic wave propagation and interaction with GUVs. The photoacoustic waves are seen as mostly compressive half-cycle pulses with peak pressures of~1MPa and spatial extent FWHM~36m. At a repetition rate of 10Hz, they enable the release of 25% of the FITC-dextran content of GUVs in 15min. Such photoacoustic waves may enable non-invasive targeted release of GUVs and cell transfection over large volumes of tissues in just a few minutes.

  View details for DOI 10.1038/s41598-021-82140-4

  View details for PubMedID 33531539

• In situ observations of jetting in the divergent rebound regime for high-velocity metallic microparticle impact APPLIED PHYSICS LETTERS Sun, Y., Veysset, D., Nelson, K. A., Schuh, C. A. 2020; 117 (13)

  View details for DOI 10.1063/5.0018681

  View details for Web of Science ID 000577127600003

• Surface oxide and hydroxide effects on aluminum microparticle impact bonding ACTA MATERIALIA Lienhard, J., Crook, C., Azar, M., Hassani, M., Mumm, D. R., Veysset, D., Apelian, D., Nelson, K. A., Champagne, V., Nardi, A., Schuh, C. A., Valdevit, L. 2020; 197: 28-39

  View details for DOI 10.1016/j.actamat.2020.07.011

  View details for Web of Science ID 000564768300004

• Particle size effects in metallic microparticle impact-bonding ACTA MATERIALIA Dowding, I., Hassani, M., Sun, Y., Veysset, D., Nelson, K. A., Schuh, C. A. 2020; 194: 40-48

  View details for DOI 10.1016/j.actamat.2020.04.044

  View details for Web of Science ID 000542971400004

• Cleavable comonomers enable degradable, recyclable thermoset plastics NATURE Shieh, P., Zhang, W., Husted, K. L., Kristufek, S. L., Xiong, B., Lundberg, D. J., Lem, J., Veysset, D., Sun, Y., Nelson, K. A., Plata, D. L., Johnson, J. A. 2020; 583 (7817): 542-+

  Abstract

  Thermosets-polymeric materials that adopt a permanent shape upon curing-have a key role in the modern plastics and rubber industries, comprising about 20 per cent of polymeric materials manufactured today, with a worldwide annual production of about 65 million tons1,2. The high density of crosslinks that gives thermosets their useful properties (for example, chemical and thermal resistance and tensile strength) comes at the expense of degradability and recyclability. Here, using the industrial thermoset polydicyclopentadiene as a model system, we show that when a small number of cleavable bonds are selectively installed within the strands of thermosets using a comonomer additive in otherwise traditional curing workflows, the resulting materials can display the same mechanical properties as the native material, but they can undergo triggered, mild degradation to yield soluble, recyclable products of controlled size and functionality. By contrast, installation of cleavable crosslinks, even at much higher loadings, does not produce degradable materials. These findings reveal that optimization of the cleavable bond location can be used as a design principle to achieve controlled thermoset degradation. Moreover, we introduce a class of recyclable thermosets poised for rapid deployment.

  View details for DOI 10.1038/s41586-020-2495-2

  View details for Web of Science ID 000551954700006

  View details for PubMedID 32699399

  View details for PubMedCentralID PMC7384294

• Impact-induced glass-to-rubber transition of polyurea under high-velocity temperature-controlled microparticle impact APPLIED PHYSICS LETTERS Sun, Y., Kooi, S. E., Nelson, K. A., Hsieh, A. J., Veysset, D. 2020; 117 (2)

  View details for DOI 10.1063/5.0013081

  View details for Web of Science ID 000554066700001

• Interferometric and fluorescence analysis of shock wave effects on cell membrane COMMUNICATIONS PHYSICS Ito, Y., Veysset, D., Kooi, S. E., Martynowych, D., Nakagawa, K., Nelson, K. A. 2020; 3 (1)

  View details for DOI 10.1038/s42005-020-0394-3

  View details for Web of Science ID 000546700800001

• Multi-frame interferometric imaging with a femtosecond stroboscopic pulse train for observing irreversible phenomena REVIEW OF SCIENTIFIC INSTRUMENTS Martynowych, D., Veysset, D., Maznev, A. A., Sun, Y., Kooi, S. E., Nelson, K. A. 2020; 91 (3): 033711

  Abstract

  We describe a high-speed single-shot multi-frame interferometric imaging technique enabling multiple interferometric images with femtosecond exposure time over a 50 ns event window to be recorded, following a single laser-induced excitation event. The stroboscopic illumination of a framing camera is made possible through the use of a doubling cavity that produces a femtosecond pulse train that is synchronized to the gated exposure windows of the individual frames of the camera. The imaging system utilizes a Michelson interferometer to extract phase and ultimately displacement information. We demonstrate the method by monitoring laser-induced deformation and the propagation of high-amplitude acoustic waves in a silicon nitride membrane. The method is applicable to a wide range of fast irreversible phenomena such as crack branching, shock-induced material damage, cavitation, and dielectric breakdown.

  View details for DOI 10.1063/1.5140446

  View details for Web of Science ID 000523448600002

  View details for PubMedID 32259926

• Material hardness at strain rates beyond 10(6) s(-1) via high velocity microparticle impact indentation SCRIPTA MATERIALIA Hassani, M., Veysset, D., Nelson, K. A., Schuh, C. A. 2020; 177: 198-202

  View details for DOI 10.1016/j.scriptamat.2019.10.032

  View details for Web of Science ID 000500388900039

• Laser-driven high-velocity microparticle launcher in atmosphere and under vacuum INTERNATIONAL JOURNAL OF IMPACT ENGINEERING Veysset, D., Sun, Y., Kooi, S. E., Lem, J., Nelson, K. A. 2020; 137

  View details for DOI 10.1016/j.ijimpeng.2019.103465

  View details for Web of Science ID 000514229700029

• Molecular dependencies of dynamic stiffening and strengthening through high strain rate microparticle impact of polyurethane and polyurea elastomers APPLIED PHYSICS LETTERS Sun, Y., Wu, Y., Veysset, D., Kooi, S. E., Hu, W., Swager, T. M., Nelson, K. A., Hsieh, A. J. 2019; 115 (9)

  View details for DOI 10.1063/1.5111964

  View details for Web of Science ID 000483884100030

• Impact-bonding with aluminum, silver, and gold microparticles: Toward understanding the role of native oxide layer APPLIED SURFACE SCIENCE Hassani-Gangaraj, M., Veysset, D., Nelson, K. A., Schuh, C. A. 2019; 476: 528-532

  View details for DOI 10.1016/j.apsusc.2019.01.111

  View details for Web of Science ID 000459458600062

• Unraveling the high strain-rate dynamic stiffening in select model polyurethanes - the role of intermolecular hydrogen bonding POLYMER Wu, Y., Hu, W., Sun, Y., Veysset, D., Kooi, S. E., Nelson, K. A., Swager, T. M., Hsieh, A. J. 2019; 168: 218-227

  View details for DOI 10.1016/j.polymer.2019.02.038

  View details for Web of Science ID 000462323900028

• Adhesion strength of titanium particles to alumina substrates: A combined cold spray and LIPIT study SURFACE & COATINGS TECHNOLOGY Imbriglio, S. I., Hassani-Gangaraj, M., Veysset, D., Aghasibeig, M., Gauvin, R., Nelson, K. A., Schuh, C. A., Chromik, R. R. 2019; 361: 403-412

  View details for DOI 10.1016/j.surfcoat.2019.01.071

  View details for Web of Science ID 000459523600047

• Response to Comment on "Adiabatic shear instability is not necessary for adhesion in cold spray" SCRIPTA MATERIALIA Hassani-Gangaraj, M., Veysset, D., Champagne, V. K., Nelson, K. A., Schuh, C. A. 2019; 162: 515-519

  View details for DOI 10.1016/j.scriptamat.2018.12.015

  View details for Web of Science ID 000457664900107

• Glass fracture by focusing of laser-generated nanosecond surface acoustic waves SCRIPTA MATERIALIA Veysset, D., Kooi, S. E., Haferssas, R., Hassani-Gangaraj, M., Islam, M., Maznev, A. A., Chernukha, Y., Zhao, X., Nakagawa, K., Martynowych, D., Zhang, X., Lomonosov, A. M., Schuh, C. A., Radovitzky, R., Pezeril, T., Nelson, K. A. 2019; 158: 42-45

  View details for DOI 10.1016/j.scriptamat.2018.08.026

  View details for Web of Science ID 000447094500010

• Melt-driven erosion in microparticle impact NATURE COMMUNICATIONS Hassani-Gangaraj, M., Veysset, D., Nelson, K. A., Schuh, C. A. 2018; 9: 5077

  Abstract

  Impact-induced erosion is the ablation of matter caused by being physically struck by another object. While this phenomenon is known, it is empirically challenging to study mechanistically because of the short timescales and small length scales involved. Here, we resolve supersonic impact erosion in situ with micrometer- and nanosecond-level spatiotemporal resolution. We show, in real time, how metallic microparticles (~10-μm) cross from the regimes of rebound and bonding to the more extreme regime that involves erosion. We find that erosion in normal impact of ductile metallic materials is melt-driven, and establish a mechanistic framework to predict the erosion velocity.

  View details for DOI 10.1038/s41467-018-07509-y

  View details for Web of Science ID 000451622500002

  View details for PubMedID 30498237

  View details for PubMedCentralID PMC6265329

• Extreme Energy Absorption in Glassy Polymer Thin Films by Supersonic Micro-projectile Impact MATERIALS TODAY Hyon, J., Lawal, O., Fried, O., Thevamaran, R., Yazdi, S., Zhou, M., Veysset, D., Kooi, S. E., Jiao, Y., Hsiao, M., Streit, J., Vaia, R. A., Thomas, E. L. 2018; 21 (8): 817-824

  View details for DOI 10.1016/j.mattod.2018.07.014

  View details for Web of Science ID 000447974200014

• High-velocity micro-particle impact on gelatin and synthetic hydrogel JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS Veysset, D., Kooi, S. E., Maznev, A. A., Tang, S., Mijailovic, A. S., Yang, Y., Geiser, K., Van Vliet, K. J., Olsen, B. D., Nelson, K. A. 2018; 86: 71-76

  Abstract

  The high-velocity impact response of gelatin and synthetic hydrogel samples is investigated using a laser-based microballistic platform for launching and imaging supersonic micro-particles. The micro-particles are monitored during impact and penetration into the gels using a high-speed multi-frame camera that can record up to 16 images with nanosecond time resolution. The trajectories are compared with a Poncelet model for particle penetration, demonstrating good agreement between experiments and the model for impact in gelatin. The model is further validated on a synthetic hydrogel and the applicability of the results is discussed. We find the strength resistance parameter in the Poncelet model to be two orders of magnitude higher than in macroscopic experiments at comparable impact velocities. The results open prospects for testing high-rate behavior of soft materials on the microscale and for guiding the design of drug delivery methods using accelerated microparticles.

  View details for DOI 10.1016/j.jmbbm.2018.06.016

  View details for Web of Science ID 000441490900007

  View details for PubMedID 29957446

• Adiabatic shear instability is not necessary for adhesion in cold spray ACTA MATERIALIA Hassani-Gangaraj, M., Veysset, D., Champagne, V. K., Nelson, K. A., Schuh, C. A. 2018; 158: 430-439

  View details for DOI 10.1016/j.actamat.2018.07.065

  View details for Web of Science ID 000444667600034

• Molecular influence in the glass/polymer interface design: The role of segmental dynamics POLYMER Hsieh, A. J., Veysset, D., Miranda, D. F., Kooi, S. E., Runt, J., Nelson, K. A. 2018; 146: 222-229

  View details for DOI 10.1016/j.polymer.2018.05.034

  View details for Web of Science ID 000436470900024

• Single-bubble and multibubble cavitation in water triggered by laser-driven focusing shock waves PHYSICAL REVIEW E Veysset, D., Gutierrez-Hernandez, U., Dresselhaus-Cooper, L., De Colle, F., Kooi, S., Nelson, K. A., Quinto-Su, P. A., Pezeril, T. 2018; 97 (5): 053112

  Abstract

  In this study a single laser pulse spatially shaped into a ring is focused into a thin water layer, creating an annular cavitation bubble and cylindrical shock waves: an outer shock that diverges away from the excitation laser ring and an inner shock that focuses towards the center. A few nanoseconds after the converging shock reaches the focus and diverges away from the center, a single bubble nucleates at the center. The inner diverging shock then reaches the surface of the annular laser-induced bubble and reflects at the boundary, initiating nucleation of a tertiary bubble cloud. In the present experiments, we have performed time-resolved imaging of shock propagation and bubble wall motion. Our experimental observations of single-bubble cavitation and collapse and appearance of ring-shaped bubble clouds are consistent with our numerical simulations that solve a one-dimensional Euler equation in cylindrical coordinates. The numerical results agree qualitatively with the experimental observations of the appearance and growth of large bubble clouds at the smallest laser excitation rings. Our technique of shock-driven bubble cavitation opens interesting perspectives for the investigation of shock-induced single-bubble or multibubble cavitation phenomena in thin liquids.

  View details for DOI 10.1103/PhysRevE.97.053112

  View details for Web of Science ID 000433913900015

  View details for PubMedID 29906915

• In-situ observations of single micro-particle impact bonding SCRIPTA MATERIALIA Hassani-Gangaraj, M., Veysset, D., Nelson, K. A., Schuh, C. A. 2018; 145: 9-13

  View details for DOI 10.1016/j.scriptamat.2017.09.042

  View details for Web of Science ID 000417662000003

• Dynamics of supersonic microparticle impact on elastomers revealed by real-time multi-frame imaging (vol 6, 2018) SCIENTIFIC REPORTS Veysset, D., Hsieh, A. J., Kooi, S., Maznev, A. A., Masser, K. A., Nelson, K. A. 2018; 8: 46944

  Abstract

  This corrects the article DOI: 10.1038/srep25577.

  View details for DOI 10.1038/srep46944

  View details for Web of Science ID 000425285800001

  View details for PubMedID 29451230

  View details for PubMedCentralID PMC5814769

• Simulation of Polyurea Shock Response under High-Velocity Microparticle Impact Gorfain, J. E., Key, C. T., Veysset, D., Nelson, K. A., Chau, R., Germann, T. C., Lane, J. M., Brown, E. N., Eggert, J. H., Knudson, M. D. AMER INST PHYSICS. 2018

  View details for DOI 10.1063/1.5044862

  View details for Web of Science ID 000440134300094

• Melting Can Hinder Impact-Induced Adhesion PHYSICAL REVIEW LETTERS Hassani-Gangaraj, M., Veysset, D., Nelson, K. A., Schuh, C. A. 2017; 119 (17): 175701

  Abstract

  Melting has long been used to join metallic materials, from welding to selective laser melting in additive manufacturing. In the same school of thought, localized melting has been generally perceived as an advantage, if not the main mechanism, for the adhesion of metallic microparticles to substrates during a supersonic impact. Here, we conduct the first in situ supersonic impact observations of individual metallic microparticles aimed at the explicit study of melting effects. Counterintuitively, we find that under at least some conditions melting is disadvantageous and hinders impact-induced adhesion. In the parameter space explored, i.e., ∼10  μm particle size and ∼1  km/s particle velocity, we argue that the solidification time is much longer than the residence time of the particle on the substrate, so that resolidification cannot be a significant factor in adhesion.

  View details for DOI 10.1103/PhysRevLett.119.175701

  View details for Web of Science ID 000413663300007

  View details for PubMedID 29219456

• Molecular influence in high-strain-rate microparticle impact response of poly(urethane urea) elastomers POLYMER Veysset, D., Hsieh, A. J., Kooi, S. E., Nelson, K. A. 2017; 123: 30-38

  View details for DOI 10.1016/j.polymer.2017.06.071

  View details for Web of Science ID 000407399000004

• Acoustical breakdown of materials by focusing of laser-generated Rayleigh surface waves APPLIED PHYSICS LETTERS Veysset, D., Maznev, A. A., Veres, I. A., Pezeril, T., Kooi, S. E., Lomonosov, A. M., Nelson, K. A. 2017; 111 (3)

  View details for DOI 10.1063/1.4993586

  View details for Web of Science ID 000406123100017

• Interferometric analysis of laser-driven cylindrically focusing shock waves in a thin liquid layer SCIENTIFIC REPORTS Veysset, D., Maznev, A. A., Pezeril, T., Kooi, S., Nelson, K. A. 2016; 6: 24

  Abstract

  Shock waves in condensed matter are of great importance for many areas of science and technology ranging from inertially confined fusion to planetary science and medicine. In laboratory studies of shock waves, there is a need in developing diagnostic techniques capable of measuring parameters of materials under shock with high spatial resolution. Here, time-resolved interferometric imaging is used to study laser-driven focusing shock waves in a thin liquid layer in an all-optical experiment. Shock waves are generated in a 10 µm-thick layer of water by focusing intense picosecond laser pulses into a ring of 95 µm radius. Using a Mach-Zehnder interferometer and time-delayed femtosecond laser pulses, we obtain a series of images tracing the shock wave as it converges at the center of the ring before reemerging as a diverging shock, resulting in the formation of a cavitation bubble. Through quantitative analysis of the interferograms, density profiles of shocked samples are extracted. The experimental geometry used in our study opens prospects for spatially resolved spectroscopic studies of materials under shock compression.

  View details for DOI 10.1038/s41598-016-0032-1

  View details for Web of Science ID 000452741400004

  View details for PubMedID 28003659

  View details for PubMedCentralID PMC5431339

• Dynamics of supersonic microparticle impact on elastomers revealed by real-time multi-frame imaging SCIENTIFIC REPORTS Veysset, D., Hsieh, A. J., Kooi, S., Maznev, A. A., Masser, K. A., Nelson, K. A. 2016; 6: 25577

  Abstract

  Understanding high-velocity microparticle impact is essential for many fields, from space exploration to medicine and biology. Investigations of microscale impact have hitherto been limited to post-mortem analysis of impacted specimens, which does not provide direct information on the impact dynamics. Here we report real-time multi-frame imaging studies of the impact of 7 μm diameter glass spheres traveling at 700-900 m/s on elastomer polymers. With a poly(urethane urea) (PUU) sample, we observe a hyperelastic impact phenomenon not seen on the macroscale: a microsphere undergoes a full conformal penetration into the specimen followed by a rebound which leaves the specimen unscathed. The results challenge the established interpretation of the behaviour of elastomers under high-velocity impact.

  View details for DOI 10.1038/srep25577

  View details for Web of Science ID 000375435100001

  View details for PubMedID 27156501

  View details for PubMedCentralID PMC4860635

• Laser-induced versus shock wave induced transformation of highly ordered pyrolytic graphite APPLIED PHYSICS LETTERS Veysset, D., Pezeril, T., Kooi, S., Bulou, A., Nelson, K. A. 2015; 106 (16)

  View details for DOI 10.1063/1.4918929

  View details for Web of Science ID 000353559900012

• RUPTURE MECHANISM FOR THIN SHELLS BASED ON ULTRASOUND ACTIVATION FOR SUBCUTANEOUS CONTROLLED DRUG DELIVERY SYSTEMS Curi, S., Veysset, D., Balan, R., Kooi, S., Nelson, K. A., Elman, N. M., D'Hers, S., Onate, E., Oliver, Huerta, A. INT CENTER NUMERICAL METHODS ENGINEERING. 2014: 778-786

  View details for Web of Science ID 000353626501004

• High strain rate deformation of layered nanocomposites NATURE COMMUNICATIONS Lee, J., Veysset, D., Singer, J. P., Retsch, M., Saini, G., Pezeril, T., Nelson, K. A., Thomas, E. L. 2012; 3: 1164

  Abstract

  Insight into the mechanical behaviour of nanomaterials under the extreme condition of very high deformation rates and to very large strains is needed to provide improved understanding for the development of new protective materials. Applications include protection against bullets for body armour, micrometeorites for satellites, and high-speed particle impact for jet engine turbine blades. Here we use a microscopic ballistic test to report the responses of periodic glassy-rubbery layered block-copolymer nanostructures to impact from hypervelocity micron-sized silica spheres. Entire deformation fields are experimentally visualized at an exceptionally high resolution (below 10 nm) and we discover how the microstructure dissipates the impact energy via layer kinking, layer compression, extreme chain conformational flattening, domain fragmentation and segmental mixing to form a liquid phase. Orientation-dependent experiments show that the dissipation can be enhanced by 30% by proper orientation of the layers.

  View details for DOI 10.1038/ncomms2166

  View details for Web of Science ID 000315992100001

  View details for PubMedID 23132014

• Photoacoustic determination of the speed of sound in single crystal cyclotrimethylene trinitramine at acoustic frequencies from 0.5 to 15 GHz (vol 110, 113513, 2011) JOURNAL OF APPLIED PHYSICS Johnson, J. A., Manke, K. J., Veysset, D. G., Maznev, A. A., Ramos, K. J., Hooks, D. E., Nelson, K. A. 2012; 111 (8)

  View details for DOI 10.1063/1.3703118

  View details for Web of Science ID 000303598800148

• INTERFEROMETRIC ANALYSIS OF CYLINDRICALLY FOCUSED LASER-DRIVEN SHOCK WAVES IN A THIN LIQUID LAYER Veysset, D., Maznev, A. A., Saini, G., Kooi, S. E., Pezeril, T., Nelson, K. A., Elert, M. L., Buttler, W. T., Borg, J. P., Jordan, J. L., Vogler, T. J. AMER INST PHYSICS. 2012

  View details for DOI 10.1063/1.3686590

  View details for Web of Science ID 000302774300378

• Photoacoustic determination of the speed of sound in single crystal cyclotrimethylene trinitramine at acoustic frequencies from 0.5 to 15 GHz JOURNAL OF APPLIED PHYSICS Johnson, J. A., Manke, K. J., Veyssett, D. G., Maznev, A. A., Ramos, K. J., Hooks, D. E., Nelson, K. A. 2011; 110 (11)

  View details for DOI 10.1063/1.3667291

  View details for Web of Science ID 000298254800034

• Direct Visualization of Laser-Driven Focusing Shock Waves PHYSICAL REVIEW LETTERS Pezeril, T., Saini, G., Veysset, D., Kooi, S., Fidkowski, P., Radovitzky, R., Nelson, K. A. 2011; 106 (21): 214503

  Abstract

  Direct real-time visualization and measurement of laser-driven shock generation, propagation, and 2D focusing in a sample are demonstrated. A substantial increase of the pressure at the convergence of the cylindrical acoustic shock front is observed experimentally and simulated numerically. Single-shot acquisitions using a streak camera reveal that at the convergence of the shock wave in water the supersonic speed reaches Mach 6, corresponding to the multiple gigapascal pressure range ∼30 GPa.

  View details for DOI 10.1103/PhysRevLett.106.214503

  View details for Web of Science ID 000290895300008

  View details for PubMedID 21699304