Impact of nanoscopic impurity aggregates on cavitation in water

Šako, Marin (avtor), Netz, Roland R. (avtor), Kanduč, Matej (avtor)

The stability of water against cavitation under negative pressures is a phenomenon known for considerable discrepancies between theoretical predictions and experimental observations. Using a combination of molecular dynamics simulations and classical nucleation theory, we explore how nanoscopic hydrocarbon droplets influence cavitation in water. Our findings reveal that while a macroscopic volume of absolutely pure water withstands around −120 MPa of tension, introducing a single nanoscopic oil droplet, merely a few nanometers in radius, brings this cavitation threshold to around −30 MPa, closely matching the values typically observed in highly controlled experiments. The unavoidable presence of nanoscopic hydrophobic impurities, even in highly purified water used in experiments, imposes a practical limit on achieving the theoretical tensile strength in realistic settings. More broadly, our study highlights the profound impact of nonpolar residues on nucleation phenomena and enhances our understanding of metastability in real-world systems.

• Jezik: Angleški jezik
• Ključne besede: cavitation, bubble, droplet, water, oil, molecular dynamics simulation
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FMF - Fakulteta za matematiko in fiziko
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2025
• Št. strani: 9 str.
• Številčenje: Vol. 62, art. 106243
• PID: 20.500.12556/RUL-168116
• UDK: 532
• ISSN pri članku: 2468-0230
• DOI: 10.1016/j.surfin.2025.106243
• COBISS.SI-ID: 230475267
• Datum objave v RUL: 28.03.2025

Gradivo je del revije

• Naslov: Surfaces and interfaces
• Založnik: Elsevier
• ISSN: 2468-0230
• COBISS.SI-ID: 526516249

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: voda, kapljevina, molekularna dinamika

Projekti

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: P1-0055
• Naslov: Biofizika polimerov, membran, gelov, koloidov in celic

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: J1-4382
• Naslov: Stabilnost bioloških tekočin pod natezno obremenitvijo