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Full-Text Articles in Nanotechnology

An Electrochemical Sensor For Tenofovir Monitoring, Abdellatif Ait Lahcen, Gymama Slaughter Jan 2025

An Electrochemical Sensor For Tenofovir Monitoring, Abdellatif Ait Lahcen, Gymama Slaughter

Center for Bioelectronics Publications

Effective monitoring of tenofovir (TFV) adherence is critical for ensuring the success of antiretroviral therapies in preventing and managing HIV, as nonadherence can lead to treatment failure and the development of drug-resistant strains. In this study, a highly sensitive and selective novel biomimetic sensor for TFV determination is developed utilizing laser-scribed graphene (LSG) modified with gold spiky nanostructures (AuNSp) and molecularly imprinted polymer (MIP). The MIP layer is engineered with precise control to maximize molecular specificity for TFV. Electrochemical characterization demonstrates excellent performance, including the broadest linear detection range (10 nM to 200 μM) reported to date with a sensitivity …


Electrochemical Strategies For Microrna Quantification Leveraging Amplification And Nanomaterials: A Review, Alexander Hunt, Gymama Slaughter Jan 2025

Electrochemical Strategies For Microrna Quantification Leveraging Amplification And Nanomaterials: A Review, Alexander Hunt, Gymama Slaughter

Center for Bioelectronics Publications

MicroRNAs (miRNAs) are small, non-coding RNAs that regulate gene expression and have emerged as critical biomarkers in various diseases, including cancer. Their stability in bodily fluids and role as oncogenes or tumor suppressors make them attractive targets for non-invasive diagnostics. However, conventional detection methods, such as Northern blotting, RT-PCR, and microarrays, are limited by low sensitivity, lengthy protocols, and limited specificity. Electrochemical biosensors offer a promising alternative, providing high sensitivity, rapid response times, portability, and cost-effectiveness. These biosensors translate miRNA hybridization events into quantifiable electrochemical signals, often leveraging redox-active labels, mediators, or intercalators. Recent advancements in nanomaterials and signal amplification …


Nano-Embedded Medical Devices And Delivery Systems In Interventional Radiology, Erin Marie D San Valentin, Allan John R Barcena, Carleigh Klusman, Benjamin Martin, Marites P Melancon Jan 2023

Nano-Embedded Medical Devices And Delivery Systems In Interventional Radiology, Erin Marie D San Valentin, Allan John R Barcena, Carleigh Klusman, Benjamin Martin, Marites P Melancon

Faculty, Staff and Student Publications

Nanomaterials research has significantly accelerated the development of the field of vascular and interventional radiology. The incorporation of nanoparticles with unique and functional properties in medical devices and delivery systems has paved the way for the creation of novel diagnostic and therapeutic procedures for various clinical disorders. In this review, we discuss the advancements in the field of interventional radiology and the role of nanotechnology in maximizing the benefits and mitigating the disadvantages of interventional radiology theranostic procedures. Several nanomaterials have been studied to improve the efficacy of interventional radiology interventions, reduce the complications associated with medical devices, improve the …


Rna As A Unique Polymer To Build Controllable Nanostructures For Nanomedicine And Nanotechnology, Hui Li Jan 2016

Rna As A Unique Polymer To Build Controllable Nanostructures For Nanomedicine And Nanotechnology, Hui Li

Theses and Dissertations--Pharmacy

RNA nanotechnology is an emerging field that involves the design, construction and functionalization of nanostructures composed mainly of RNA for applications in biomedical and material sciences. RNA is a unique polymer with structural simplicity like DNA and functional diversity like proteins. A variety of RNA nanostructures have been reported with different geometrical structures and functionalities. This dissertation describes the design and construction of novel two-dimensional and three-dimensional self-assembled RNA nanostructures with applications in therapeutics delivery, cancer targeting and immunomodulation. Firstly, by using the ultra-stable pRNA three-way junction motif with controllable angles and arm lengths, tetrahedral architectures composed purely of RNA …


Synthesis Of Graphitic Nanostructures On Noble Metals, Amelie Adele Parmentier Nov 2015

Synthesis Of Graphitic Nanostructures On Noble Metals, Amelie Adele Parmentier

Theses and Dissertations

In this research, two subjects are studied: the growth of graphene from various catalysts with RF-CVD and the growth of graphitic nanostructures from gold-decorated graphene with RF-CVD. In the first topic, various catalysts are made with magnesium oxide and metal nanoparticles: iron, silver and gold. Using a radio-frequency generator, these catalysts are heated and placed in contact with three gases (argon, hydrogen and methane). By controlling various parameters, graphene synthesis can happen. The results are analyzed with Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Thermo-gravimetrical analysis (TGA), and X-ray diffraction (XRD). In the second topic, commercial graphene is functionalized …


Glad Nanostructured Arrays With Enhanced Carrier Collection And Light Trapping For Photoconductive And Photovoltaic Device Applications, Hilal Cansizoglu Jun 2015

Glad Nanostructured Arrays With Enhanced Carrier Collection And Light Trapping For Photoconductive And Photovoltaic Device Applications, Hilal Cansizoglu

Theses and Dissertations

Solar energy harvesting has been of great interest for researchers over the past 50 years. Main emphasis has been on developing high quality materials with low defect density and proper band gaps. However, high cost of bulk materials and insufficient light absorption in thin films led to utilization of semiconductor nanostructures in photovoltaics and photonics. Light trapping abilities of nanostructures can provide high optical absorption whereas core/shell nanostructured arrays can allow enhanced charge carrier collection. However, most of the nanofabrication methods that can produce uniform nanostructure geometries are limited in materials, dimensions, and not compatible with industrial production systems. Therefore, …


Self-Assembly Of Peptides To Nanostructures, Dindyal Mandal, Amir Nasrolahi Shirazi, Keykavous Parang Jan 2014

Self-Assembly Of Peptides To Nanostructures, Dindyal Mandal, Amir Nasrolahi Shirazi, Keykavous Parang

Pharmacy Faculty Articles and Research

The formation of well-ordered nanostructures through self-assembly of diverse organic and inorganic building blocks has drawn much attention owing to their potential applications in biology and chemistry. Among all organic building blocks, peptides are one of the most promising platforms due to their biocompatibility, chemical diversity, and resemblance with proteins. Inspired from the protein assembly in biological systems, various self-assembled peptide structures have been constructed using several amino acids and sequences. This review focuses on this emerging area, the recent advances in peptide self-assembly, and formation of different nanostructures, such as tubular, fibers, vesicles, spherical, and rod coil structures. While …