Welcome

 

Welcome to the official website of the European High Pressure Research Group (EHPRG).

EHPRG is non-profitable academic association established in 1963 which is devoted to science and technology of matter under high pressure. It organizes an annual meeting which brings together hundreds of scientists of various fields, mainly physics, chemistry, Earth and planetary sciences, bio- and food science and technology.

The reasonable size of the group, low conference fees, and a friendly relationship between the attendants have made EHPRG meetings a major event in the European high-pressure community for more than half a century.

Upcoming EHPRG Meeting

 


The 61st EHPRG Meeting will take place in Thessaloniki, Greece,, at the Porto Palace Hotel, in the period September 1-6, 2024.
The conference will be chaired by John Arvanitidis and Dimitris Christofilos, Aristotle University of Thessaloniki.
Abstract submission is open, the deadline having been extended to 29 April 2024.
For more information, please visit the official webpage of EHPRG-61.

Immediate past EHPRG Meeting

 


The Joint 28th AIRAPT and 60th EHPRG International Conference on High Pressure Science and Technology (AIRAPT-2023) took place in Edinburgh, UK, at the Edinburgh International Conference Centre (EICC), from July 23-28, 2023.
Immediately prior to AIRAPT/EHPRG, from the 19th to 23rd of July 2023, a Summer School had taken place, also based in Edinburgh, with accommodation provided in University Halls of Residence. The School was aimed at young researchers, and experimentalists wanting a grounding in theory and vice versa.
A photo album is available on the AIRAPT website.
For more information, please visit the official webpage of AIRAPT-23.

High-pressure in the headlines

 

Selection of high-pressure related titles from top scientific journals.

    Reproducible graphene synthesis by oxygen-free chemical vapour deposition
    by Jacob Amontree

    Nature, Published online: 29 May 2024; doi:10.1038/s41586-024-07454-5

    Assessment of surface contamination shows that trace oxygen is a key factor influencing the trajectory and quality of graphene grown by low-pressure chemical vapour deposition, with oxygen-free synthesis showing increased reproducibility and quality.
    29 May 2024 at 12:00am
    Explosive 2018 eruptions at Kīlauea driven by a collapse-induced stomp-rocket mechanism
    by Josh Crozier

    Nature Geoscience, Published online: 27 May 2024; doi:10.1038/s41561-024-01442-0

    Explosive volcanic eruptions of Kīlauea in Hawaii can be explained by sudden subsidence of reservoir roof rock causing gas and lithic debris venting by a mechanism similar to that of a stomp rocket, according to seismic inversions for reservoir pressure changes.
    27 May 2024 at 12:00am
    Electric cell death
    by Ann Xu

    Nature Physics, Published online: 23 May 2024; doi:10.1038/s41567-024-02418-y

    A clear picture of how and why cells inevitably lose viability is still lacking. A dynamical systems view of starving bacteria points to a continuous energy expenditure needed for maintaining the right osmotic pressure as an important factor.
    23 May 2024 at 12:00am
    Curvature-mediated rapid extravasation and penetration of nanoparticles against interstitial fluid pressure for improved drug delivery
    by Xiaohe JiangSai XuYunqiu MiaoKang HuangBingqi WangBingwen DingZhuan ZhangZitong ZhaoXinxin ZhangXinghua ShiMiaorong YuFalin TianYong GanaState Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, ChinabUniversity of Chinese Academy of Sciences, Beijing 100049, ChinacChinese Academy of Sciences Center for Excellence in Nanoscience National Center for Nanoscience and Technology, Beijing 100190, ChinadSchool of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing 210023, ChinaeSchool of Pharmacy, Henan University, Kaifeng 475004, ChinafNational Medical Products Administration Key Laboratory for Quality Research and Evaluation of Pharmaceutical Excipients, National Institutes for Food and Drug Control, Beijing 100050, China
    Proceedings of the National Academy of Sciences, Volume 121, Issue 22, May 2024.

    20 May 2024 at 9:00am

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    Photon Pressure with an Effective Negative Mass Microwave Mode
    by I. C. Rodrigues, G. A. Steele, and D. Bothner
    Author(s): I. C. Rodrigues, G. A. Steele, and D. Bothner

    Harmonic oscillators belong to the most fundamental concepts in physics and are central to many current research fields such as circuit QED, cavity optomechanics, and photon pressure systems. Here, we engineer a microwave mode in a superconducting LC circuit that mimics the dynamics of a negative ma…


    [Phys. Rev. Lett. 132, 203603] Published Fri May 17, 2024
    17 May 2024 at 12:00pm
    Boundary Layer Thickness and Friction Velocity by Symmetry Arguments
    by Chenning Tong
    Author(s): Chenning Tong

    We derive analytically for the first time the downstream evolution of the boundary layer thickness and the friction velocity of the zero-pressure-gradient turbulent boundary layer (ZPGTBL). Lie groups were used to derive the downstream evolution and to obtain the full set of the similarity variables…


    [Phys. Rev. Lett. 132, 204001] Published Thu May 16, 2024
    16 May 2024 at 12:00pm
    Pressure-Induced Superconductivity In Polycrystalline ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7−δ}$
    by G. Wang, N. N. Wang, X. L. Shen, J. Hou, L. Ma, L. F. Shi, Z. A. Ren, Y. D. Gu, H. M. Ma, P. T. Yang, Z. Y. Liu, H. Z. Guo, J. P. Sun, G. M. Zhang, S. Calder, J.-Q. Yan, B. S. Wang, Y. Uwatoko, and J.-G. Cheng
    Author(s): G. Wang, N. N. Wang, X. L. Shen, J. Hou, L. Ma, L. F. Shi, Z. A. Ren, Y. D. Gu, H. M. Ma, P. T. Yang, Z. Y. Liu, H. Z. Guo, J. P. Sun, G. M. Zhang, S. Calder, J.-Q. Yan, B. S. Wang, Y. Uwatoko, and J.-G. Cheng

    Researchers have measured a zero-resistance state for the nickelate La3Ni2O7, which measurements suggest may superconduct at temperatures above the boiling point of liquid nitrogen.


    [Phys. Rev. X 14, 011040] Published Thu Mar 07, 2024
    7 Mar 2024 at 11:00am
    Smectic and Soap Bubble Optofluidic Lasers
    by Zala Korenjak and Matjaž Humar
    Author(s): Zala Korenjak and Matjaž Humar

    Using a soap bubble, researchers have created a laser that could act as a sensitive sensor for environmental parameters including atmospheric pressure.


    [Phys. Rev. X 14, 011002] Published Fri Jan 05, 2024
    5 Jan 2024 at 11:00am
    Colloquium: Room temperature superconductivity: The roles of theory and materials design
    by Warren E. Pickett
    Author(s): Warren E. Pickett

    Superconductivity, discovered in 1911 and first theoretically understood in 1957, remains a fascinating phenomenon for reasons both fundamental and applied. Reliably calculating the critical temperature of a given material, and even more so predicting it, turned out to be a considerable challenge. This Colloquium explains how theoretical developments have led to increasingly reliable predictions that have culminated in the discovery of the hydride materials that display superconductivity under high pressure at temperatures just shy of room temperature.


    [Rev. Mod. Phys. 95, 021001] Published Fri Apr 07, 2023
    7 Apr 2023 at 12:00pm
    Importance of the semimetallic state for the quantum Hall effect in ${\mathrm{HfTe}}_{5}$
    by M. M. Piva, R. Wawrzyńczak, Nitesh Kumar, L. O. Kutelak, G. A. Lombardi, R. D. dos Reis, C. Felser, and M. Nicklas
    Author(s): M. M. Piva, R. Wawrzyńczak, Nitesh Kumar, L. O. Kutelak, G. A. Lombardi, R. D. dos Reis, C. Felser, and M. Nicklas

    At ambient pressure, ${\mathrm{HfTe}}_{5}$ is a material at the boundary between a weak and a strong topological phase, which can be tuned by changes in its crystalline structure or by the application of high magnetic fields. It exhibits a Lifshitz transition upon cooling, and three-dimensional (3D)…


    [Phys. Rev. Materials 8, L041202] Published Mon Apr 29, 2024
    29 Apr 2024 at 12:00pm
    Structural routes to stabilize superconducting ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ at ambient pressure
    by Luke C. Rhodes and Peter Wahl
    Author(s): Luke C. Rhodes and Peter Wahl

    The bilayer perovskite ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ has recently been found to enter a superconducting state under hydrostatic pressure at temperatures as high as 80 K. The onset of superconductivity is observed concurrent with a structural transition which suggests that supe…


    [Phys. Rev. Materials 8, 044801] Published Tue Apr 09, 2024
    9 Apr 2024 at 12:00pm
    Pair correlations of the hybridized orbitals in a ladder model for the bilayer nickelate ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$
    by Masataka Kakoi, Tatsuya Kaneko, Hirofumi Sakakibara, Masayuki Ochi, and Kazuhiko Kuroki
    Author(s): Masataka Kakoi, Tatsuya Kaneko, Hirofumi Sakakibara, Masayuki Ochi, and Kazuhiko Kuroki

    To clarify the nature of high-temperature superconductivity in the bilayer nickelate ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7}$ under pressure, we investigate, using the density-matrix renormalization group method, the pair correlations in the two-orbital $t\text{−}J$ ladder model. While t…


    [Phys. Rev. B 109, L201124] Published Fri May 24, 2024
    24 May 2024 at 12:00pm
    Superconductivity near 70 K in boron-carbon clathrates $M{\mathrm{B}}_{2}{\mathrm{C}}_{8}$ ($M=\mathrm{Na}$, K, Rb, Cs) at ambient pressure
    by Bin Li, Yulan Cheng, Cong Zhu, Jie Cheng, and Shengli Liu
    Author(s): Bin Li, Yulan Cheng, Cong Zhu, Jie Cheng, and Shengli Liu

    Inspired by the first boron-carbon (B-C) clathrate ${\mathrm{SrB}}_{3}{\mathrm{C}}_{3}$ and the ternary borohydride ${\mathrm{KB}}_{2}{\mathrm{H}}_{8}$ [Miao et al., Phys. Rev. B 104, L100504 (2021)], we have performed first-principles density functional theory calculations of the electronic and ph…


    [Phys. Rev. B 109, 184517] Published Wed May 22, 2024
    22 May 2024 at 12:00pm
    Superconducting, plastic, and superionic states driven by four-membered lithium rings in a high-pressure lithium-lead compound
    by Qing Lu, Chi Ding, Qiuhan Jia, Shuning Pan, Jiuyang Shi, Yu Han, Junjie Wang, Xiaomeng Wang, Dingyu Xing, and Jian Sun
    Author(s): Qing Lu, Chi Ding, Qiuhan Jia, Shuning Pan, Jiuyang Shi, Yu Han, Junjie Wang, Xiaomeng Wang, Dingyu Xing, and Jian Sun

    Using a combination of crystal structure search methods, first-principles calculations, and machine learning potential based simulations, we explored the lithium-lead system and predicted five phases: ${I}_{4}$/mcm ${\mathrm{LiPb}}_{2}$, Pnma LiPb, ${I}_{4}$/mmm ${\mathrm{Li}}_{4}\mathrm{Pb}, C2/m {…


    [Phys. Rev. B 109, L180507] Published Wed May 22, 2024
    22 May 2024 at 12:00pm
    Suppression of metal-to-insulator transition and stabilization of superconductivity by pressure in ${\mathrm{Re}}_{3}{\mathrm{Ge}}_{7}$
    by S. Huyan, E. Mun, H. Wang, T. J. Slade, Z. Li, J. Schmidt, R. A. Ribeiro, W. Xie, S. L. Bud'ko, and P. C. Canfield
    Author(s): S. Huyan, E. Mun, H. Wang, T. J. Slade, Z. Li, J. Schmidt, R. A. Ribeiro, W. Xie, S. L. Bud'ko, and P. C. Canfield

    The effect of pressure on the low-temperature states of the ${\mathrm{Re}}_{3}{\mathrm{Ge}}_{7}$ is investigated by both electrical and Hall resistance and magnetization measurements. At ambient pressure, the temperature-dependent resistance of ${\mathrm{Re}}_{3}{\mathrm{Ge}}_{7}$ behaves quasilinea…


    [Phys. Rev. B 109, 174522] Published Tue May 21, 2024
    21 May 2024 at 12:00pm
    Tuning the colossal magnetoresistance in (${\mathrm{Mn}}_{1\text{−}x}{\mathrm{Mg}}_{x}{)}_{3}{\mathrm{Si}}_{2}{\mathrm{Te}}_{6}$ by engineering the gap and magnetic properties via doping and pressure
    by Chaoxin Huang, Mengwu Huo, Xing Huang, Hui Liu, Lisi Li, Ziyou Zhang, Zhiqiang Chen, Yifeng Han, Lan Chen, Feixiang Liang, Hongliang Dong, Bing Shen, Hualei Sun, and Meng Wang
    Author(s): Chaoxin Huang, Mengwu Huo, Xing Huang, Hui Liu, Lisi Li, Ziyou Zhang, Zhiqiang Chen, Yifeng Han, Lan Chen, Feixiang Liang, Hongliang Dong, Bing Shen, Hualei Sun, and Meng Wang

    The ferrimagnetic semiconductor ${\mathrm{Mn}}_{3}{\mathrm{Si}}_{2}{\mathrm{Te}}_{6}$ keeps the records of colossal magnetoresistance (CMR) and angular magnetoresistance (AMR). Here we report tuning the electronic transport properties via doping and pressure in ${({\mathrm{Mn}}_{1\text{−}x}{\mathrm{…


    [Phys. Rev. B 109, 205145] Published Tue May 21, 2024
    21 May 2024 at 12:00pm
    Effect of incubation temperature after high hydrostatic pressure treatment of Escherichia coli on the detection of injured populations
    by Yoshiko Nakaura Claudia Sok Kazuya Morimatsu Kazutaka Yamamoto a Institute of Food Research, National Agriculture and Food Research Organization, Tsukuba, Japanb Food Technology and Biotechnology, Technical University of Munich, Munich, Germanyc Faculty of Agriculture, Ehime University, Matsuyama, Japan
    Volume 44, Issue 2, June 2024, Page 105-115
    .

    4 Apr 2024 at 9:13am
    Strong resistance to hydrogen embrittlement of high-performance superalloy MP35N under 200 MPa (≈30,000 psi) H2 gas pressure
    by S. Klotz L. Amand E. Lelièvre-Berna R. Khasanov M. Elender B. Annighöfer L. Delbes J. Maurice C. Payre B. Doisneau a IMPMC, Sorbonne Université Paris, Franceb Laboratoire de Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Sorbonne Université, Paris, Francec Institut Laue-Langevin Grenoble, Franced Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, Villigen PSI, Switzerlande Laboratoire Léon Brillouin, CE Saclay, Saclay, France
    Volume 44, Issue 2, June 2024, Page 116-126
    .

    18 Apr 2024 at 8:32am
    Pressure and non-ideal axial ratio effects on thermodynamic properties of hexagonal close-packed Mg and Zn metals
    by Nguyen Thi Hong Tran Thi Hai Nguyen Thi Dung Ho Khac Hieu a Hong Duc University, Dong Ve, Viet Namb Institute of Research and Development, Duy Tan University, Hai Chau, Viet Namc Faculty of Environmental and Natural Sciences, Duy Tan University, Hai Chau, Viet Nam
    Volume 44, Issue 2, June 2024, Page 143-158
    .

    23 Apr 2024 at 6:27am
    Structure and properties of a quasi-one-dimensional compound BaTiS3 under pressure
    by L. C. Fu W. J. Cheng Y. Liu L. C. Shi Y. Peng J. Zhang Z. W. Li X. D. Li J. L. Zhu X. C. Wang C. Q. Jin a Department of Physics, Southern University of Science and Technology, Shenzhen, People's Republic of Chinab Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, People's Republic of Chinac School of Physics, University of Chinese Academy of Sciences, Beijing, People's Republic of Chinad Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, People's Republic of China
    Volume 44, Issue 2, June 2024, Page 95-104
    .

    11 Mar 2024 at 5:32am
    Dissociation behavior of microbial nitrilase in temperature-pressure plane studied by using high pressure near-ultraviolet circular dichroism spectroscopy
    by Ryo Ishiguro Tetsuro Fujisawa Faculty of Engineering, Gifu University, Gifu, Japan
    Volume 44, Issue 2, June 2024, Page 127-142
    .

    20 Apr 2024 at 8:23am