| 1 | Studies of laser-plasma interaction physics with low-density targets for direct-drive inertial confinement fusion on the Shenguang III prototype显示文摘The physics of laser-plasma interaction is studied on the Shenguang III prototype laser facility under conditions relevant to inertial confinement fusion designs.A sub-millimeter-size underdense hot plasma is created by ionization of a low-density plastic foam by four high-energy(3.2 kJ)laser beams.An interaction beam is fired with a delay permitting evaluation of the excitation of parametric instabilities at different stages of plasma evolution.Multiple diagnostics are used for plasma characterization,scattered radiation,and accelerated electrons.The experimental results are analyzed with radiation hydrodynamic simulations that take account of foam ionization and homogenization.The measured level of stimulated Raman scattering is almost one order of magnitude larger than that measured in experiments with gasbags and hohlraums on the same installation,possibly because of a greater plasma density.Notable amplification is achieved in high-intensity speckles,indicating the importance of implementing laser temporal smoothing techniques with a large bandwidth for controlling laser propagation and absorption. | V.T.Tikhonchuk T.Gong N.Jourdain O.Renner F.P.Condamine K.Q.Pan W.Nazarov L.Hudec J.Limpouch R.Liska M.Krus F.Wang D.Yang S.W.Li Z.C.Li Z.Y.Guan Y.G.Liu T.Xu X.S.Peng X.M.Liu Y.L.Li J.Li T.M.Song J.M.Yang S.E.Jiang B.H.Zhang W.Y.Huo G.Ren Y.H.Chen W.Zheng Y.K.Ding K.Lan S.Weber | 2021 | Matter and Radiation at Extremes2021，6，2： | 2 |
| 2 | Sensorized tissue analogues enabled by a 3D-printed conductive organogel显示文摘State-of-the-art tissue analogues used in high-fidelity,hands-on medical simulation modules can deliver lifelike appearance and feel but lack the capability to provide quantified,real-time assessment of practitioner performance.The monolithic fabrication of hybrid printed/textile piezoresistive strain sensors in a realistic Y/V plasty suture training pad is demonstrated.A class of 3D-printable organogels comprised of inexpensive and nonhazardous feedstocks is used as the sensing medium,and conductive composite threads are used as the electrodes.These organogels are comprised of a glycol-based deep-eutectic solvent(DES)serving as the ionic conductor and 3-trimethoxysilylmethacrylate-capped fumed silica particles serving as the gelating agent.Rheology measurements reveal the influence of fumed silica particle capping group on the mixture rheology.Freestanding strain sensors demonstrate a maximum strain amplitude of 300%,negligible signal drift,a monotonic sensor response,a low degree of hysteresis,and excellent cyclic stability.The increased contact resistance of the conductive thread electrodes used in place of wire electrodes do not make a significant impact on sensor performance.This work showcases the potential of these organogels utilized in sensorized tissue analogues and freestanding strain sensors for widespread applications in medical simulation and education. | Michael R.Crump Sophia L.Bidinger Felippe J.Pavinatto Alex T.Gong Robert M.Sweet Devin MacKenzie | 2021 | npj Flexible Electronics2021，5，1： | 1 |
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