guillermo guzman - Academia.edu (original) (raw)

Uploads

Papers by guillermo guzman

Research paper thumbnail of Electrical switching in VO2 sol?gel films

Journal of Materials Chemistry, 1996

ABSTRACT

Research paper thumbnail of Synthesis of vanadium dioxide thin films from vanadium alkoxides

Materials Research Bulletin, 1994

Research paper thumbnail of ChemInform Abstract: Thermochromic V1-xNbxO2 Sol-Gel Thin Films

Cheminform, 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was e... more ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Research paper thumbnail of Optical Properties of Sol-Gel Derived Vanadium Oxide Films

Journal of Sol-gel Science and Technology, 1997

Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The c... more Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The condensation of vanadic acid gives long ribbon-like oxide particles which macroscopically orient in the same direction in aqueous sols when their concentration is larger than 0.12 mol · l-1. These anisotropic sols and gels should be considered as lyotropic nematic liquid crystals. Thick films in which ribbons align along the same direction can be deposited. These oriented coatings exhibit improved electrochemical properties as reversible cathodes for lithium batteries. Amorphous oxo-polymers are formed via the controlled hydrolysis of vanadium alkoxides. They allow the deposition of optically transparent thin films that exhibit interesting electrochromic properties and turn reversibly from yellow to green upon electrochemical reduction. Moreover these alkoxide derived films can be easily reduced into vanadium dioxide. These VO2 thin films exhibit thermochromic properties and could be used as optical switches in the infrared. The transition temperature of these VO2 films can be modified by doping the vanadium oxide with other cations.

Research paper thumbnail of Optical properties of sol-gel derived vanadium oxide films

Journal of Sol-gel Science and Technology, 1997

Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The c... more Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The condensation of vanadic acid gives long ribbon-like oxide particles which macroscopically orient in the same direction in aqueous sols when their concentration is larger than 0.12 mol·l−1. These anisotropic sols and gels should be considered as lyotropic nematic liquid crystals. Thick films in which ribbons align along the same direction can be deposited. These oriented coatings exhibit improved electrochemical properties as reversible cathodes for lithium batteries. Amorphous oxo-polymers are formed via the controlled hydrolysis of vanadium alkoxides. They allow the deposition of optically transparent thin films that exhibit interesting electrochromic properties and turn reversibly from yellow to green upon electrochemical reduction. Moreover these alkoxide derived films can be easily reduced into vanadium dioxide. These VO2 thin films exhibit thermochromic properties and could be used as optical switches in the infrared. The transition temperature of these VO2 films can be modified by doping the vanadium oxide with other cations.

Research paper thumbnail of Electrical switching in VO2 sol?gel films

Journal of Materials Chemistry, 1996

ABSTRACT

Research paper thumbnail of Synthesis of vanadium dioxide thin films from vanadium alkoxides

Materials Research Bulletin, 1994

Research paper thumbnail of ChemInform Abstract: Thermochromic V1-xNbxO2 Sol-Gel Thin Films

Cheminform, 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was e... more ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Research paper thumbnail of Optical Properties of Sol-Gel Derived Vanadium Oxide Films

Journal of Sol-gel Science and Technology, 1997

Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The c... more Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The condensation of vanadic acid gives long ribbon-like oxide particles which macroscopically orient in the same direction in aqueous sols when their concentration is larger than 0.12 mol · l-1. These anisotropic sols and gels should be considered as lyotropic nematic liquid crystals. Thick films in which ribbons align along the same direction can be deposited. These oriented coatings exhibit improved electrochemical properties as reversible cathodes for lithium batteries. Amorphous oxo-polymers are formed via the controlled hydrolysis of vanadium alkoxides. They allow the deposition of optically transparent thin films that exhibit interesting electrochromic properties and turn reversibly from yellow to green upon electrochemical reduction. Moreover these alkoxide derived films can be easily reduced into vanadium dioxide. These VO2 thin films exhibit thermochromic properties and could be used as optical switches in the infrared. The transition temperature of these VO2 films can be modified by doping the vanadium oxide with other cations.

Research paper thumbnail of Optical properties of sol-gel derived vanadium oxide films

Journal of Sol-gel Science and Technology, 1997

Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The c... more Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The condensation of vanadic acid gives long ribbon-like oxide particles which macroscopically orient in the same direction in aqueous sols when their concentration is larger than 0.12 mol·l−1. These anisotropic sols and gels should be considered as lyotropic nematic liquid crystals. Thick films in which ribbons align along the same direction can be deposited. These oriented coatings exhibit improved electrochemical properties as reversible cathodes for lithium batteries. Amorphous oxo-polymers are formed via the controlled hydrolysis of vanadium alkoxides. They allow the deposition of optically transparent thin films that exhibit interesting electrochromic properties and turn reversibly from yellow to green upon electrochemical reduction. Moreover these alkoxide derived films can be easily reduced into vanadium dioxide. These VO2 thin films exhibit thermochromic properties and could be used as optical switches in the infrared. The transition temperature of these VO2 films can be modified by doping the vanadium oxide with other cations.

Research paper thumbnail of Electrical switching in VO2 sol?gel films

Journal of Materials Chemistry, 1996

ABSTRACT

Research paper thumbnail of Synthesis of vanadium dioxide thin films from vanadium alkoxides

Materials Research Bulletin, 1994

Research paper thumbnail of ChemInform Abstract: Thermochromic V1-xNbxO2 Sol-Gel Thin Films

Cheminform, 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was e... more ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Research paper thumbnail of Optical Properties of Sol-Gel Derived Vanadium Oxide Films

Journal of Sol-gel Science and Technology, 1997

Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The c... more Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The condensation of vanadic acid gives long ribbon-like oxide particles which macroscopically orient in the same direction in aqueous sols when their concentration is larger than 0.12 mol · l-1. These anisotropic sols and gels should be considered as lyotropic nematic liquid crystals. Thick films in which ribbons align along the same direction can be deposited. These oriented coatings exhibit improved electrochemical properties as reversible cathodes for lithium batteries. Amorphous oxo-polymers are formed via the controlled hydrolysis of vanadium alkoxides. They allow the deposition of optically transparent thin films that exhibit interesting electrochromic properties and turn reversibly from yellow to green upon electrochemical reduction. Moreover these alkoxide derived films can be easily reduced into vanadium dioxide. These VO2 thin films exhibit thermochromic properties and could be used as optical switches in the infrared. The transition temperature of these VO2 films can be modified by doping the vanadium oxide with other cations.

Research paper thumbnail of Optical properties of sol-gel derived vanadium oxide films

Journal of Sol-gel Science and Technology, 1997

Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The c... more Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The condensation of vanadic acid gives long ribbon-like oxide particles which macroscopically orient in the same direction in aqueous sols when their concentration is larger than 0.12 mol·l−1. These anisotropic sols and gels should be considered as lyotropic nematic liquid crystals. Thick films in which ribbons align along the same direction can be deposited. These oriented coatings exhibit improved electrochemical properties as reversible cathodes for lithium batteries. Amorphous oxo-polymers are formed via the controlled hydrolysis of vanadium alkoxides. They allow the deposition of optically transparent thin films that exhibit interesting electrochromic properties and turn reversibly from yellow to green upon electrochemical reduction. Moreover these alkoxide derived films can be easily reduced into vanadium dioxide. These VO2 thin films exhibit thermochromic properties and could be used as optical switches in the infrared. The transition temperature of these VO2 films can be modified by doping the vanadium oxide with other cations.

Research paper thumbnail of Electrical switching in VO2 sol?gel films

Journal of Materials Chemistry, 1996

ABSTRACT

Research paper thumbnail of Synthesis of vanadium dioxide thin films from vanadium alkoxides

Materials Research Bulletin, 1994

Research paper thumbnail of ChemInform Abstract: Thermochromic V1-xNbxO2 Sol-Gel Thin Films

Cheminform, 2010

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was e... more ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Research paper thumbnail of Optical Properties of Sol-Gel Derived Vanadium Oxide Films

Journal of Sol-gel Science and Technology, 1997

Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The c... more Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The condensation of vanadic acid gives long ribbon-like oxide particles which macroscopically orient in the same direction in aqueous sols when their concentration is larger than 0.12 mol · l-1. These anisotropic sols and gels should be considered as lyotropic nematic liquid crystals. Thick films in which ribbons align along the same direction can be deposited. These oriented coatings exhibit improved electrochemical properties as reversible cathodes for lithium batteries. Amorphous oxo-polymers are formed via the controlled hydrolysis of vanadium alkoxides. They allow the deposition of optically transparent thin films that exhibit interesting electrochromic properties and turn reversibly from yellow to green upon electrochemical reduction. Moreover these alkoxide derived films can be easily reduced into vanadium dioxide. These VO2 thin films exhibit thermochromic properties and could be used as optical switches in the infrared. The transition temperature of these VO2 films can be modified by doping the vanadium oxide with other cations.

Research paper thumbnail of Optical properties of sol-gel derived vanadium oxide films

Journal of Sol-gel Science and Technology, 1997

Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The c... more Vanadium oxide gels can be made from vanadate aqueous solutions or from vanadium alkoxides. The condensation of vanadic acid gives long ribbon-like oxide particles which macroscopically orient in the same direction in aqueous sols when their concentration is larger than 0.12 mol·l−1. These anisotropic sols and gels should be considered as lyotropic nematic liquid crystals. Thick films in which ribbons align along the same direction can be deposited. These oriented coatings exhibit improved electrochemical properties as reversible cathodes for lithium batteries. Amorphous oxo-polymers are formed via the controlled hydrolysis of vanadium alkoxides. They allow the deposition of optically transparent thin films that exhibit interesting electrochromic properties and turn reversibly from yellow to green upon electrochemical reduction. Moreover these alkoxide derived films can be easily reduced into vanadium dioxide. These VO2 thin films exhibit thermochromic properties and could be used as optical switches in the infrared. The transition temperature of these VO2 films can be modified by doping the vanadium oxide with other cations.