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In 1992 we showed that nanoparticles of the layered compound WS2 are unstable in the platelet form and they spontaneously form closed cage structures akin to carbon fullerenes and carbon nanotubes. This instability was attributed to the highly reactive dangling bonds of both sulfur and tungsten atoms, which appear at the periphery of the nanoparticles.
Numerous kinds of inorganic fullerene-like (IF) nanoparticles and nanotubes (INT) were synthesized by us and by others over the years. Furthermore, extensive in-silico studies by various groups were devoted to unravelling the properties of various inorganic nanotubes. Detailed study of the growth mechanism of fullerene-like WS2 nanoparticles and nanotubes was undertaken. This development led to the scaling-up of their production and their recent commercialization by NanoMaterials (www.apnano.com) and N.I.S. (www.nisusacorp.com) as superior solid lubricants with numerous potential applications. A production line for manufacturing lubricants (oils and greases) formulated with these nanoparticles as well as metal working fluids has been completed with sales exceeding 1000 metric tons of lubricants a year.
The mechanical, optical and electrical properties of WS2 nanotubes were carried out demonstrating the unique physical behavior of such 1D nanostructures. For example, jointly with Iwasa’s group in the University of Tokyo, these nanotubes were shown to exhibit (quasi-1D) superconductivity at about 5K and strong light emitting diodes were fabricated, as well.
Much of our efforts in the past and also today are focused on the synthesis of new nanotubes and fullerene-like nanoparticles and study of their unique physical and chemical behavior. Numerous nanotubes from the large family of “misfit” compounds, like PbS-NbS2, LaSe-TaSe2, have been recently prepared and studied. Doping of IF-MoS2 nanoparticles with minute amounts of Re and Nb atoms was demonstrated. Precipitous reduction in friction and wear was observed for lubricants formulated with the doped nanoparticles. Various medical applications were proposed for the doped IF nanoparticles.
Numerous kinds of inorganic fullerene-like (IF) nanoparticles and nanotubes (INT) were synthesized by us and by others over the years. Furthermore, extensive in-silico studies by various groups were devoted to unravelling the properties of various inorganic nanotubes. Detailed study of the growth mechanism of fullerene-like WS2 nanoparticles and nanotubes was undertaken. This development led to the scaling-up of their production and their recent commercialization by NanoMaterials (www.apnano.com) and N.I.S. (www.nisusacorp.com) as superior solid lubricants with numerous potential applications. A production line for manufacturing lubricants (oils and greases) formulated with these nanoparticles as well as metal working fluids has been completed with sales exceeding 1000 metric tons of lubricants a year.
The mechanical, optical and electrical properties of WS2 nanotubes were carried out demonstrating the unique physical behavior of such 1D nanostructures. For example, jointly with Iwasa’s group in the University of Tokyo, these nanotubes were shown to exhibit (quasi-1D) superconductivity at about 5K and strong light emitting diodes were fabricated, as well.
Much of our efforts in the past and also today are focused on the synthesis of new nanotubes and fullerene-like nanoparticles and study of their unique physical and chemical behavior. Numerous nanotubes from the large family of “misfit” compounds, like PbS-NbS2, LaSe-TaSe2, have been recently prepared and studied. Doping of IF-MoS2 nanoparticles with minute amounts of Re and Nb atoms was demonstrated. Precipitous reduction in friction and wear was observed for lubricants formulated with the doped nanoparticles. Various medical applications were proposed for the doped IF nanoparticles.
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Papers共 574 篇Author StatisticsCo-AuthorSimilar Experts
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Nanoscaleno. 20 (2024): 9917-9934
ACS APPLIED POLYMER MATERIALSno. 6 (2024): 3303-3315
Vojtěch Kundrát,Libor Novák,Kristýna Bukvišová, Jakub Zálešák, Eva Kolíbalová,Rita Rosentsveig,M B Sreedhara,Hila Shalom,Lena Yadgarov,Alla Zak,Miroslav Kolíbal,Reshef Tenne
ACS nanono. 19 (2024): 12284-12294
M. Bar-Saden,R. Tenne
Nature Materialsno. 3 (2024): 310-311
Vojtech Kundrat,Hagai Cohen,Anna Kossoy, Walter Bonani,Lothar Houben, Jakub Zalesak,Bing Wu,Zdenek Sofer,Karin Popa,Reshef Tenne
Smallno. 14 (2024)
ADVANCED MATERIALS INTERFACESno. 6 (2024)
SMALLno. 14 (2024): e2307684-e2307684
ACS Nano (2024)
M. B. Sreedhara,Azat Khadiev, Kai Zheng,Simon Hettler,Marco Serra, Ivano E. Castelli,Raul Arenal,Dmitri Novikov,Reshef Tenne
CHEMISTRY OF MATERIALSno. 9 (2024): 4736-4749
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