Volume 13; Issue 6

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Physical Review Applied
Volume 13; Issue 6

Physical Review Applied

Volume 13; Issue 6

1

Magnon-Phonon Quantum Correlation Thermometry

Potts, C.A., Bittencourt, V.A.S.V., Kusminskiy, S. Viola, Davis, J.P.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 937 KB

2020

2

Dependence of Photoluminescence Emission on Excitation Power and Temperature in Highly Doped 6H-

Tarekegne, Abebe T., Shi, Xiaodong, Gan, Yulin, Chen, Yunzhong, Ou, Haiyan

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.92 MB

2020

3

Constructive Near-Field Interference Effect in a Birdcage MRI Coil with an Artificial Magnetic Shield

Lezhennikova, K., Abdeddaim, R., Hurshkainen, A., Vignaud, A., Dubois, M., Jomin, P., Berrahou, D., Raaijmakers, A., Avdievich, N., Melchakova, I., Enoch, S., Belov, P., Simovski, C., Glybovski, S.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 3.50 MB

2020

4

-Symmetric Optical Metasurfaces

Nye, N. S., Halawany, A. E., Markos, C., Khajavikhan, M., Christodoulides, D. N.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 937 KB

2020

5

Quantum System Dynamics and the Quasistatic Approximation

Hudson, Andrew, Camparo, James

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.40 MB

2020

6

Ferroelectric Field-Effect Devices

Xu, Meng, Chen, Ting-Wei, Yan, Jian-Min, Guo, Lei, Wang, Hui, Gao, Guan-Yin, Luo, Hao-Su, Chai, Yang, Zheng, Ren-Kui

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 3.64 MB

2020

7

) Monolayers for Enhanced Photocatalytic Water Splitting

Ersan, F., Ataca, C.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 3.02 MB

2020

8

Anomalous Hall Sensors with High Sensitivity and Stability Based on Interlayer Exchange-Coupled Magnetic Thin Films

Wang, Kang, Zhang, Yiou, Xiao, Gang

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.58 MB

2020

9

Transfer-Matrix Approach to Determining the Linear Response of All-Fiber Networks of Cavity-QED Systems

NÃ©met, Nikolett, White, Donald, Kato, Shinya, Parkins, Scott, Aoki, Takao

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.01 MB

2020

10

Digitally Programmable Resonant Elastic Metamaterials

Sugino, Christopher, Ruzzene, Massimo, Erturk, Alper

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.11 MB

2020

11

Spin Rectification and Electrically Controlled Spin Transport in Molecular-Ferroelectrics-Based Spin Valves

Yin, Yuewei, Jiang, Xuanyuan, Koten, Mark A., Shield, Jeffrey E., Chen, Xuegang, Yun, Yu, NâDiaye, Alpha T., Hong, Xia, Xu, Xiaoshan

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.18 MB

2020

12

Stable High-Speed Encryption Key Distribution via Synchronization of Chaotic Optoelectronic Oscillators

BÃ¶hm, Fabian, Sahakian, Sevada, Dooms, Ann, Verschaffelt, Guy, Van der Sande, Guy

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.03 MB

2020

13

Robust Interface-State Laser in Non-Hermitian Microresonator Arrays

Qi, Lu, Wang, Guo-Li, Liu, Shutian, Zhang, Shou, Wang, Hong-Fu

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 4.97 MB

2020

14

Cavity-Enhanced Photon Emission from a Single Germanium-Vacancy Center in a Diamond Membrane

HÃ¸y Jensen, Rasmus, Janitz, Erika, Fontana, Yannik, He, Yi, Gobron, Olivier, Radko, Ilya P., Bhaskar, Mihir, Evans, Ruffin, RodrÃguez Rosenblueth, CÃ©sar Daniel, Childress, Lilian, Huck, Alexander,

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.56 MB

2020

15

Nanoscale Mapping of the Directional Flow Patterns at Liquid-Solid Interfaces

Piantanida, Luca, Payam, Amir F., Zhong, Jing, VoÃ¯tchovsky, Kislon

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 13.11 MB

2020

16

Symmetry-Protected Privacy: Beating the Rate-Distance Linear Bound Over a Noisy Channel

Zeng, Pei, Wu, Weijie, Ma, Xiongfeng

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 807 KB

2020

17

Enhancing the Remote Distance of LC Passive Wireless Sensors by Parity-Time Symmetry Breaking

Zhou, Bin-Bin, Deng, Wen-Jun, Wang, Li-Feng, Dong, Lei, Huang, Qing-An

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 3.34 MB

2020

18

Single-Molecule-Doped Crystalline Nanosheets for Delicate Photophysics Studies and Directional Single-Photon-Emitting Devices

Wei, Shangming, Ren, Penglong, He, Yong, Zhang, Pu, Chen, Xue-Wen

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.40 MB

2020

19

Cross-Point Devices

Nath, Shimul Kanti, Nandi, Sanjoy Kumar, El-Helou, Assaad, Liu, Xinjun, Li, Shuai, Ratcliff, Thomas, Raad, Peter E., Elliman, Robert G.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 3.33 MB

2020

20

Fully Automated Identification of Two-Dimensional Material Samples

Greplova, Eliska, Gold, Carolin, Kratochwil, Benedikt, Davatz, Tim, Pisoni, Riccardo, Kurzmann, Annika, Rickhaus, Peter, Fischer, Mark H., Ihn, Thomas, Huber, Sebastian D.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.22 MB

2020

21

Reducing Contact Resistance in Two-Dimensional-Material-Based Electrical Contacts by Roughness Engineering

Banerjee, Sneha, Cao, Liemao, Ang, Yee Sin, Ang, L.K., Zhang, Peng

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.92 MB

2020

22

Surface Waveguide and Y Splitter Enabled by Complementary Impedance Surfaces

Zafari, Kazem, Oraizi, Homayoon

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 5.87 MB

2020

23

Superconducting Emitter Powered at 1.5 Terahertz by an External Resonator

Ono, Y., Minami, H., Kuwano, G., Kashiwagi, T., Tsujimoto, M., Kadowaki, K., Klemm, R. A.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.86 MB

2020

24

Cloaking: Controlling Thermal and Hydrodynamic Fields Simultaneously

Yeung, Woon-Shing, Mai, Van-Phung, Yang, Ruey-Jen

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 4.29 MB

2020

25

Robust Multiplexing with Topolectrical Higher-Order Chern Insulators

Ni, Xiang, Xiao, Zhicheng, Khanikaev, Alexander B., AlÃ¹, Andrea

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.45 MB

2020

26

Electric-field-driven Deterministic and Robust 120Â° Magnetic Rotation in a Concave Triangular Nanomagnet

Peng, Ren-Ci, Chen, Long-Qing, Zhou, Ziyao, Liu, Ming, Nan, Ce-Wen

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 3.74 MB

2020

27

Ultralow Mechanical Damping with Meissner-Levitated Ferromagnetic Microparticles

Vinante, A., Falferi, P., Gasbarri, G., Setter, A., Timberlake, C., Ulbricht, H.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.34 MB

2020

28

On-Chip Diffraction-Free Beam Guiding beyond the Light Cone

Lin, Ye, Feng, Tianhua, Lan, Sheng, Liu, Jin, Xu, Yi

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 5.98 MB

2020

29

Manipulation of Coupling and Magnon Transport in Magnetic Metal-Insulator Hybrid Structures

Fan, Yabin, Quarterman, P., Finley, Joseph, Han, Jiahao, Zhang, Pengxiang, Hou, Justin T., Stiles, Mark D., Grutter, Alexander J., Liu, Luqiao

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.03 MB

2020

30

Role of Synchronization in Magnetless Nonreciprocal Devices Based on Commutated Transmission Lines

Xiao, Zhicheng, Sounas, Dimitrios L., Nagulu, Aravind, Tymchenko, Mykhailo, Dinc, Tolga, Krishnaswamy, Harish, AlÃ¹, Andrea

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 4.42 MB

2020

31

Optically Rewritable Memory in a GrapheneâFerroelectric-Photovoltaic Heterostructure

Kundys, D., Cascales, A., Makhort, A. S., Majjad, H., Chevrier, F., Doudin, B., Fedrizzi, A., Kundys, B.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 775 KB

2020

32

for Permanent-Magnet Applications: Ab Initio Material Design Integrated with Experimental Characterization

Matsumoto, Munehisa, Hawai, Takafumi, Ono, Kanta

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.92 MB

2020

33

Quantum Dots

Ma, Xiangyu, Wang, Yuejing, Zide, Joshua, Doty, Matthew

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 4.10 MB

2020

34

Silicon-Integrated IIIâV Light Emitters and Absorbers Using Bipolar Diffusion

Kivisaari, Pyry

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.06 MB

2020

35

Quantum Dots

Liu, Mengting, Wang, Xianjie, Yao, Tai, Fang, Bin, Wu, Yiyong, Sun, Chengyue, Zeng, Zhongming, Song, Bo

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 8.70 MB

2020

36

Switching at Less Than 60 mV/Decade with a âColdâ Metal as the Injection Source

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 3.47 MB

2020

37

Staircase Dynamics of a Photonic Microwave Oscillator Based on a Laser Diode with Delayed Optoelectronic Feedback

Islam, Md Shariful, Kovalev, A.V., Coget, G., Viktorov, E.A., Citrin, D.S., Locquet, A.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 3.17 MB

2020

38

Spatial-Polarization-Independent Parametric Up-Conversion of Vectorially Structured Light

Wu, Hai-Jun, Zhao, Bo, Rosales-GuzmÃ¡n, Carmelo, Gao, Wei, Shi, Bao-Sen, Zhu, Zhi-Han

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 5.71 MB

2020

39

High-Efficiency Elastic Wave Rectifier in One-Dimensional Linear Magnetoelastic Phononic Crystal Slabs by an External Magnetostatic Field

Feng, Luyang, Chen, Jiujiu, Huang, Hongbo, Huo, Shaoyong, Tan, Zhuhua, Han, Xu, Huang, Guoliang

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.70 MB

2020

40

Structure Tensors for Dispersed Fibers in Soft Materials

KalhÃ¶fer-KÃ¶chling, Moritz, Bodenschatz, Eberhard, Wang, Yong

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.54 MB

2020

41

Heterostructure by Bulk Extrinsic Scattering and Interfacial Electric Field

Bai, He, Jin, L.C., Li, Gang, Su, Jian, Zhu, Z.Z., Zhang, Ying, Zhu, T., Zhang, H.W., Cai, J.W.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.05 MB

2020

42

Bessel-Gauss Beams Through Leaky Waves: Focusing and Diffractive Properties

Fuscaldo, Walter, Benedetti, Alessio, Comite, Davide, Baccarelli, Paolo, Burghignoli, Paolo, Galli, Alessandro

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.24 MB

2020

43

Acoustic Ghost Imaging in the Time Domain

Tian, Yuan, Ge, Hao, Zhang, Xiu-Juan, Xu, Xiang-Yuan, Lu, Ming-Hui, Jing, Yun, Chen, Yan-Feng

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 3.91 MB

2020

44

Superconductor

Torsello, D., Ummarino, G.A., Bekaert, J., Gozzelino, L., Gerbaldo, R., Tanatar, M.A., Canfield, P.C., Prozorov, R., Ghigo, G.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.82 MB

2020

45

Nonlinear Interaction of Acoustic Waves with a Spheroidal Particle: Radiation Force and Torque Effects

Lima, Everton B., LeÃ£o-Neto, JosÃ© P., Marques, Alisson S., Silva, GiclÃªnio C., Lopes, JosÃ© H., Silva, Glauber T.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.86 MB

2020

46

Manipulating Evanescent Waves in a Gradient Waveguide

Zeng, Yali, Feng, Hao, Xiao, Wen, Xu, Yadong, Hou, Bo, Bao, Qiaoliang, Ye, Longfang, Chen, Huanyang

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.35 MB

2020

47

Extraordinary Sound Isolation Using an Ultrasparse Array of Degenerate Anisotropic Scatterers

Su, Xiaoshi, Banerjee, Debasish

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 3.18 MB

2020

48

Directional and Spectral Control of Thermal Emission and Its Application in Radiative Cooling and Infrared Light Sources

Qu, Yurui, Pan, Meiyan, Qiu, Min

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 5.75 MB

2020

49

) Heterostructures

Ding, Yu-Feng, Yu, Zhuo-Liang, He, Peng-Bin, Wan, Qiang, Liu, Biao, Yang, Jun-Liang, Cai, Meng-Qiu

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 3.78 MB

2020

50

Current-Induced In-Plane Magnetization Switching in a Biaxial Ferrimagnetic Insulator

Zhou, Yongjian, Guo, Chenyang, Wan, Caihua, Chen, Xianzhe, Zhou, Xiaofeng, Zhang, Ruiqi, Gu, Youdi, Chen, Ruyi, Wu, Huaqiang, Han, Xiufeng, Pan, Feng, Song, Cheng

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.99 MB

2020

51

Measuring the Dispersion Forces Near the van der WaalsâCasimir Transition

Svetovoy, V.B., Postnikov, A.V., Uvarov, I.V., Stepanov, F.I., Palasantzas, G.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.51 MB

2020

52

Symmetry-Protected Zero Modes in Metamaterials Based on Topological Spin Texture

Li, Z.-X., Cao, Yunshan, Wang, X. R., Yan, Peng

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 5.41 MB

2020

53

Hydrodynamics of Quartz-Crystal-Microbalance DNA Sensors Based on Liposome Amplifiers

VÃ¡zquez-Quesada, Adolfo, Schofield, Marc MelÃ©ndez, Tsortos, Achilleas, Mateos-Gil, Pablo, Milioni, Dimitra, Gizeli, Electra, Delgado-Buscalioni, Rafael

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.80 MB

2020

54

Generalized Scaling Law for Exciton Binding Energy in Two-Dimensional Materials

Ahmad, S., Zubair, M., Jalil, O., Mehmood, M. Q., Younis, U., Liu, X., Ang, K. W., Ang, L. K.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 877 KB

2020

55

Role of Lithium Codoping in Enhancing the Scintillation Yield of Aluminate Garnets

Wu, Yuntao, Yang, Ge, Han, Dan, Liu, Ming, Hawari, Ayman, Du, Mao-Hua, Peng, Jing, Foster, Camera, Chen, Shiyou, Koschan, Merry, Melcher, Charles L.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 3.89 MB

2020

56

3D-Printed Gradient-Index Phononic Crystal Lens for Underwater Acoustic Wave Focusing

Allam, Ahmed, Sabra, Karim, Erturk, Alper

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.09 MB

2020

57

Efficient Control of Stochastic Switching via Spin Pumping in Antiferromagnetic Structures

Semenov, Yuriy G., Kim, Ki Wook

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 457 KB

2020

58

Solar Cells

Wang, Rong, Lan, Mu, Yang, Jingxiu, Wei, Su-Huai

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.14 MB

2020

59

Real-Time Immersion of Physical Experiments in Virtual Wave-Physics Domains

Becker, Theodor S., BÃ¶rsing, Nele, Haag, Thomas, BÃ¤rlocher, Christoph, Donahue, Carly M., Curtis, Andrew, Robertsson, Johan O. A., van Manen, Dirk-Jan

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 5.23 MB

2020

60

Simple Artificial Neuron Using an Ovonic Threshold Switch Featuring Spike-Frequency Adaptation and Chaotic Activity

Lee, Milim, Cho, Seong Won, Kim, Seon Jeong, Kwak, Joon Young, Ju, Hyunsu, Yi, Yeonjin, Cheong, Byung-ki, Lee, Suyoun

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 3.19 MB

2020

61

Alignment of Polarization against an Electric Field in van der Waals Ferroelectrics

Neumayer, Sabine M., Tao, Lei, O'Hara, Andrew, Brehm, John, Si, Mengwei, Liao, Pai-Ying, Feng, Tianli, Kalinin, Sergei V., Ye, Peide D., Pantelides, Sokrates T., Maksymovych, Petro, Balke, Nina

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 5.98 MB

2020

62

Radiation Detectors

Ridzonova, Katarina, Belas, Eduard, Grill, Roman, Pekarek, Jakub, Praus, Petr

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.41 MB

2020

63

Reconfigurable Acoustic Metagrating for High-Efficiency Anomalous Reflection

Chiang, Yan Kei, Oberst, Sebastian, Melnikov, Anton, Quan, Li, Marburg, Steffen, AlÃ¹, Andrea, Powell, David A.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 4.15 MB

2020

64

Torsional Mechanical Oscillator Driven by the Orbital Angular Momentum of Sound

Sanchez-Padilla, Benjamin, Brasselet, Etienne

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.03 MB

2020

65

Energy-Coupling Mechanisms Revealed through Simultaneous Keyhole Depth and Absorptance Measurements during Laser-Metal Processing

Allen, Troy R., Huang, Wenkang, Tanner, Jack R., Tan, Wenda, Fraser, James M., Simonds, Brian J.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 4.10 MB

2020

66

Laser-Induced Abnormal Cryogenic Magnetoresistance Effect in a Corbino Disk

Dong, Xinyuan, Zheng, Diyuan, Yuan, Meng, Niu, Yiru, Liu, Binbin, Wang, Hui

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.51 MB

2020

67

Polar Interface

Shin, Juyeon, Kim, Young Mo, Park, Chulkwon, Char, Kookrin

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.00 MB

2020

68

Tunable Linear Polarization-State Generator of Single Photons on a Lithium Niobate Chip

Wu, Jiafan, Huang, Yiwen, Lu, Chuanyi, Ding, Tingting, Zheng, Yuanlin, Chen, Xianfeng

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.66 MB

2020

69

Singularity-Enhanced Terahertz Detection in High-Mobility Field-Effect Transistors

Khavronin, M., Petrov, A., Kazantsev, A.E., Nikulin, E.I., Bandurin, D.A.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.21 MB

2020

70

Berreman Embedded Eigenstates for Narrow-Band Absorption and Thermal Emission

Sakotic, Zarko, Krasnok, Alex, Cselyuszka, Norbert, Jankovic, Nikolina, AlÃº, Andrea

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 3.78 MB

2020

71

Universal Self-Correcting Computing with Disordered Exciton-Polariton Neural Networks

Xu, Huawen, Ghosh, Sanjib, Matuszewski, Michal, Liew, Timothy C.H.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 2.79 MB

2020

72

Gate-Voltage-Induced Switching of the Spin-Relaxation Rate in a Triple-Quantum-Well Structure

Iijima, Tomonori, Akera, Hiroshi

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.30 MB

2020

73

Heterostructure [Phys. Rev. Applied 11 , 064015 (2019)]

Modarresi, M., Mogulkoc, A., Mogulkoc, Y., Rudenko, A.N.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 287 KB

2020

74

Perovskite Thin Films Integrated in an Optical Waveguide

SuÃ¡rez, I., JuÃ¡rez-PÃ©rez, E.J., Chirvony, V.S., Mora-SerÃ³, I., MartÃnez-Pastor, J.P.

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 1.47 MB

2020

75

Structural Investigation of Single Specimens with a Femtosecond X-Ray Laser: Routes to Signal-to-Noise Ratio Enhancement

Jung, Chulho, Nam, Daewoong, Hwang, Junha, Sung, Daeho, Cho, Dohyung, Lee, Heemin, Kim, Sangsoo, Tono, Kensuke, Yabashi, Makina, Ishikawa, Tetsuya, Noh, Do Young, Song, Changyong

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 5.12 MB

2020

76

Erratum: Experimental Certification of Sustained Entanglement and Nonlocality after Sequential Measurements [Phys. Rev. Applied 13 , 044008 (2020)]

Foletto, Giulio, Calderaro, Luca, Tavakoli, Armin, Schiavon, Matteo, Picciariello, Francesco, Cabello, AdÃ¡n, Villoresi, Paolo, Vallone, Giuseppe

Journal:

Physical Review Applied

Year:

2020

File:

PDF, 235 KB

2020