Forough Ghasemi

Sensing element design in optical pesticide-detecting arrays

M. Reza Nassajan, Forough Ghasemi

The escalating global reliance on synthetic pesticides to secure agricultural productivity has intensified concerns over their adverse impacts on human health and ecosystems. With pesticide exposure linked to severe pathologies-including neurotoxicity, endocrine disruption, and carcinogenesis-there is an urgent need for rapid, sensitive, …

ir (code pays fourni par la source)

Exploiting silver ions’ antimicrobial properties for colorimetric detection of Salmonella via suppressed formation of Au@Ag nanorods

Amir Hossein Q. Selakjan, Forough Ghasemi, Ehsan Shokri, Peyman Kheirandish Zarandi et autres

Salmonella typhimurium, a leading cause of global foodborne illness, demands rapid, on-site detection to combat its widespread contamination in food supplies—where delayed diagnosis contributes to thousands of annual fatalities. Here, we present a novel colorimetric biosensing platform that exploits the intrinsic antimicrobial …

ir (code pays fourni par la source)

Ion-mediated etching of Au–Ag core-shell nanorods for LSPR-based discrimination of hazardous ions

Mobina Anbarestani, Forough Ghasemi

ir (code pays fourni par la source)

Iron(III) edta-accelerated growth of gold/silver core/shell nanoparticles for wide-range colorimetric detection of hydrogen peroxide

Amir Hossein Q. Selakjan, Forough Ghasemi

As a naturally occurring reducing and oxidizing agent, hydrogen peroxide (H 2 O 2 ) has a role in several biotic and abiotic processes. Hence, the onsite, precise, and rapid determination of H 2 O 2 is crucial. Herein, we propose a …

ir (code pays fourni par la source)

Green Plasmonic Nanoparticles

Forough Ghasemi, Amene Naseri, Marzieh Sepahvand

ir (code pays fourni par la source)

Green Photocatalysts as Sustainable Materials for Removing Wastewater Pollutants

Amene Naseri, Forough Ghasemi

ir (code pays fourni par la source)

Synthesis of Au@Ag core-shell nanorods with tunable optical properties

Navid Miryousefi, Mahboubeh Varmazyad, Forough Ghasemi

The synthesis of noble metal nanostructures with adjustable optical properties is essential due to their potential applications in various fields such as imaging, (bio) sensors, and catalysis. In this study, Au@Ag core-shell nanorods were synthesized with tunable optical properties. The synthesis process …

ir, us (code pays fourni par la source)

Colorimetric Silver Ion Detection Based on Silver Metallization of Gold Nanorods

Marzieh Sepahvand, Forough Ghasemi

Abstract Despite the use of silver in various industries, this heavy metal can pose serious risks to living organisms and the environment. Therefore, the development of simple measurement strategies for detection of silver ions (Ag + ) with high sensitivity is of …

ir (code pays fourni par la source)

Ratiometric Dual-Mode Optical Sensor Array for the Identification and Differentiation of Pesticides in Vegetables with Mixed Plasmonic and Fluorescent Nanostructures

Marjan Koushkestani, Forough Ghasemi, Mohammad Reza Hormozi-Nezhad

In this study, we propose a ratiometric dual-mode sensor array for the identification and differentiation of azinphos-methyl, oxidemeton-methyl, and thiometon as organophosphate pesticides and acetamiprid as a neonicotinoid insecticide. This sensor incorporates unmodified gold nanoparticles (AuNPs) and three fluorescent components─blue carbon dots, …

ir (code pays fourni par la source)

Formation of plasmonic core/shell nanorods through ammonia-mediated dissolution of silver( i )oxide for ammonia monitoring

Elahe Ghorbanian, Forough Ghasemi, Kamran Rezaei Tavabe, Hamid Sabet

(0.85-13.6 ppm). In addition, the application of the sensor was validated by measuring the ammonia content in water samples from rearing ponds for rainbow trout, sturgeon, and tilapia before and after feeding. The sensor's label-free, rapid, user-friendly, naked-eye, and cost-effective operation makes …

ir (code pays fourni par la source)

Different sized gold nanoparticles for array-based sensing of pesticides and its application for strawberry pollution monitoring

Masoumeh Abdali, Forough Ghasemi, Hossein Mirseyed Hosseini, Vahideh Mahdavi

ir (code pays fourni par la source)

Machine Learning-Assisted Colorimetric Assay Based on Au@Ag Nanorods for Chromium Speciation

Afsaneh Orouji, Forough Ghasemi, Mohammad Reza Hormozi-Nezhad

The oxidation state of an element significantly controls its toxicological impacts on biological ecosystems. Therefore, design of robust sensing strategies for multiplex detection of species with respect to their oxidation states or bonding conditions, i.e., chemical speciation, is quite consequential. Chromium (Cr) …

ir (code pays fourni par la source)