Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Gianfranco Ulian"'
Autor:
Gianfranco Ulian, Giovanni Valdrè
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-10 (2023)
Abstract The zero band gap of pure graphene is a well-known issue that limits some specific applications of graphene in opto- and microelectronics. This led to several research studies in the so‐called van der Waals composites (known as heterostruc
Externí odkaz:
https://doaj.org/article/5cac5010f2214ca69800535066b882e0
Autor:
Gianfranco Ulian, Giovanni Valdrè
Publikováno v:
Data in Brief, Vol 51, Iss , Pp 109732- (2023)
The present work reports a dataset on the crystal structure, optical properties (complex dielectric function and refractive index), infrared, reflectance and Raman spectra, and electronic properties (band structure and density of states) of the 1M-po
Externí odkaz:
https://doaj.org/article/634e3d3a1cd64f308e99e9e2f0dbf190
Autor:
Gianfranco Ulian, Giovanni Valdrè
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-16 (2023)
Abstract Long-range interactions are relevant in the physical description of materials, even for those where other stronger bonds give the leading contributions. In this work, we demonstrate this assertion by simulating the infrared and Raman spectra
Externí odkaz:
https://doaj.org/article/734f7ba0e3ea43c18cfe6a6d1b08b566
Autor:
Gianfranco Ulian, Giovanni Valdrè
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
Abstract Calcite (CaCO3, trigonal crystal system, space group $$R\overline{3}c$$ R 3 ¯ c ) is a ubiquitous carbonate phase commonly found on the Earth’s crust that finds many useful applications in both scientific (mineralogy, petrology, geology)
Externí odkaz:
https://doaj.org/article/1d0d8f4e93374d4092323c70e9dd5aed
Autor:
Silvia Greco, Stefania Manzi, Luisa Molari, Andrea Saccani, Gianfranco Ulian, Giovanni Valdrè
Publikováno v:
Materials, Vol 16, Iss 1, p 285 (2022)
One of the main concerns in using natural materials in construction, such as bamboo, regards their durability. Ultra violet (UV)irradiation is claimed as a damaging agent; therefore, it is important to study its effect. Several studies have shown tha
Externí odkaz:
https://doaj.org/article/750b36526493482eb505a39983136e67
Publikováno v:
Composites Part C: Open Access, Vol 6, Iss , Pp 100183- (2021)
The development, optimization and application of new geopolymer composite materials must necessarily go through a precise and accurate physico-chemical and mineralogical characterization down to the micro and nanoscale. In this regard, SEM-EDS X-ray
Externí odkaz:
https://doaj.org/article/29d02bf2001d41148f3bae8ab7e4d78e
Publikováno v:
Composites Part C: Open Access, Vol 6, Iss , Pp 100184- (2021)
Composite-like structures are commonly found in nature and, among them, calcite (CaCO3, space group R3¯c) is made of alternately stacked layers of Ca2+ and triangular CO32− ions. The bonding scheme of this mineral results in an heterodesmic struct
Externí odkaz:
https://doaj.org/article/37fd265707bb414fa9491ac62e81e1b4
Autor:
Gianfranco Ulian, Giovanni Valdrè
Publikováno v:
Minerals, Vol 12, Iss 10, p 1323 (2022)
Sodalite Na8(Al6Si6O24)Cl2 (space group P4¯3n) is an important mineral belonging to the zeolite group, with several and manyfold fundamental and technological applications. Despite the interest in this mineral from different disciplines, very little
Externí odkaz:
https://doaj.org/article/7882c589ba7f492da2385b8d395cb90a
Autor:
Gianfranco Ulian, Giovanni Valdrè
Publikováno v:
Data in Brief, Vol 21, Iss , Pp 2367-2375 (2018)
This data article reports crystal-chemical and structural data (unit cell parameters and internal coordinates) of two hydroxyl minerals, namely brucite [magnesium hydroxide, Mg(OH)2] and portlandite [calcium hydroxide, Ca(OH)2], which were calculated
Externí odkaz:
https://doaj.org/article/d5a6d1b2fbea4c26b1aa7ae1dbe06cdd
Autor:
Gianfranco Ulian, Giovanni Valdrè
Publikováno v:
Data in Brief, Vol 21, Iss , Pp 1375-1380 (2018)
This article reports data on the anisotropy and directional elastic behavior, namely Young׳s modulus E, linear compressibility β, shear modulus μ, Poisson׳s ratio ν and wave velocities Vs1, Vs2 and Vp, of brucite (magnesium hydroxide, Mg(OH)2) a
Externí odkaz:
https://doaj.org/article/556bdfa6a5c946cab2e8e68823b65717