Hamide Ehtesabi

Hamide Ehtesabi
Shahid Beheshti University | SBU · Faculty of Life Sciences and Biotechnology

PhD

About

31
Publications
6,097
Reads
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786
Citations
Citations since 2016
27 Research Items
759 Citations
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2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
Introduction
Skills and Expertise

Publications

Publications (31)
Article
Due to the rising frequency of wounds from accidents, surgeries, burns, and chronic illnesses like diabetes, wounds continue to be an important medical concern. Infectious bacteria can cause delays in the healing process, especially when they take the biofilm form, and cause a long-lasting infection. Antibiotic resistance is generally recognized to...
Article
Full-text available
For decades, wound healing has been the focus of many researchers around the world, and their final objective is the development of effective approaches capable of accelerating the healing procedure. On the other hand, wound dressings with high flexibility, rapid hemostasis, good biocompatibility, and suitable porosity have received increasing atte...
Article
Full-text available
In spite of remarkable progress in the field of wound curation, treatment of chronic wounds remains a challenge for medical services. The constant rise in the number of patients with chronic wounds and their related financial burden has caused concern for the healthcare system. The complicated and dynamic nature of chronic wounds has increased the...
Article
In this study, a new double-layer sodium alginate (SA) hydrogel was fabricated using green synthesized carbon dots (CDs). The Urtica dioica was used as a natural precursor to synthesize CDs. The casting/solvent evaporation process was employed to fabricate SA-CD double-layer hydrogel. The properties of the SA-CD double-layer hydrogel were examined,...
Article
Sponges made with biopolymers have found great potential in biomedical applications due to their good biocompatibility, high flexibility, and extraordinary porosity. But some of their features still need to be improved. In this work, a new nanocomposite sponge with chitosan/alginate/carbon dots (CDs) is introduced. Using electrostatic interaction,...
Chapter
Full-text available
The contaminant and terminable potential of fossil fuels resulted in researchers finding an enduring and green energy source. Microbial fuel cells (MFC) are considered as a new alternative to lead people to a more sustainable, accessible, and green energy source that consumes wastes and other cheap resources. Some conventional MFCs include two cham...
Article
Detecting specific cells and molecules in a sample poses a challenge in remote and resource-limited areas, which has resulted in the rising demand for Point-Of-Care (POC) systems. While the current detection methods are unsuitable for these conditions and considerably expensive, smartphones became a practical solution to this problem due to their c...
Article
In the past few years, most studies have focused on smart substances that can respond to changes in the environment, as they can be appropriately applied in different fields, including biosensing, biotechnology, and drug delivery. Here, new fluorescent carbon dots (CDs) are synthesized by Terebinth by designing a simple and single-stage hydrotherma...
Article
Scaffolds obtained from polycaprolactone (PCL) have received extensive explorations due to their biocompatibility and biomechanical features. Nevertheless, weak hydrophilicity limits their application for scaffold-aided tissue engineering. In this work, surface modification of PCL scaffolds by using the carbon dots (CDs) solutions was examined to i...
Article
Skin repair is a complicated procedure in the human body. A proper clinical outcome cannot usually be provided by the present treatments to heal wounds. Reduction of infection, moisturisation of the wound, stimulation of the healing mechanisms, acceleration of the wound closure, and reduction of scar formation require more curative procedure. Nanom...
Article
Carbon dots (CDs) are an emerging family of nanostructures due to their unique optical properties, high chemical stability, biocompatibility, and low toxicity, they have been able to attract a lot of attention and cause significant changes in various scientific fields. In this study, the green synthesis of stable CDs by hydrothermal and pyrolysis m...
Article
As a group of heavy-metal-free fluorescent nanomaterials, carbon dots (CDs) have recently received a growing interest as they have high optical absorption activity and are chemically stable, biocompatible, and less toxic. In this paper, the green synthesis of stable CDs by hydrothermal and pyrolysis methods from Parmigiano-Reggiano is performed. An...
Article
Full-text available
Human-pathogenic viruses are still a chief reason for illness and death on the globe, as epitomized by the COVID-19 pandemic instigated by a coronavirus in 2020. Multiple novel sensors have been invented because diseases must be detected and diagnosed as early as possible, and recognition methods have to be carried out with minimal invasivity. Sens...
Article
In recent years, saliva has been introduced as an alternate to conventional biofluid assays owing to both accessibility and reliability with regard to the assessment of different biomarkers. The capability of immediate online collection and analysis of salivary biomarkers offers myriad benefits for clinical applications, resulting in the demands fo...
Article
Particularly in recent years, fluorescence carbon dots (CDs) were in the central point of scientist's focus. However, some difficulties may exist concerning CDs. For example, their targeting by other analytes usually goes wrong due to the absence of specific recognition groups on the surface of CDs. Furthermore, due to low quantum yield, they canno...
Article
Full-text available
This review summarizes state of the art synthesis and applications of carbon dots (CDs) with pH-responsive fluorescence. Following an introduction, the first section covers methods for the preparation of pH-responsive CDs, with subsections on general methods for preparing CDs (by hydrothermal, solvothermal, electrochemical, microwave, laser ablatio...
Article
Full-text available
Background: Pristine carbon dots (CDs) derived from citric acid pyrolysis are used in a variety of biomedical research such as imaging and drug delivery. However, potential cytotoxic effects of pyrolysis temperature on cells is underexplored. To address this need, we studied toxicity of the CDs to breast cancer cells using MTT and LDH assays. In a...
Article
Antibiotics widely use around the world. There is an increasing demand for the removal of antibiotics from water due to their toxicity to living beings and the adsorption process regarded as a promising method for the removal of the antibiotic. Graphene hydrogel showed an adequate adsorption capacity for antibiotics via combined adsorption interact...
Article
Tetracycline (TC) is widely used in the fight against microbial diseases, but abuse can seriously affect human health and possibly cause drug resistance. Therefore, the development of precise, fast, and inexpensive methods for TC detection in the environment and food products is of great importance. Carbon dots (CDs) are a new fluorescent substance...
Article
Full-text available
Carbon dots (CDs) have outstanding optical properties, biocompatibility, and photostability, making them attractive for imaging applications. A facile and green one-step hydrothermal synthesis method is proposed, which can be safely used in a wide range of applications such as chemical sensing, bioimaging, and optoelectronics. In this study, we rep...
Article
Miniaturized laboratories on chip platforms play an important role in handling life sciences studies. The platforms may contain static or dynamic biological cells. Examples are a fixed medium of an organ‐on‐a‐chip and individual cells moving in a microfluidic channel, respectively. Due to feasibility of control or investigation and ethical implicat...
Poster
Full-text available
Carbon dots as a fluorescent material with excellent water solubility, chemical inertness and easy surface modification are a good candidate for bioimaging and biosensing due to their low toxicity and good biocompatibility. Recently the formation of hydrogel based on carbon dots attracted a lot of attention. Sodium alginate, a sodium salt of algini...
Article
Carbon dots (CDs) as a new fluorescent material with excellent water solubility, chemical inertness, and easy surface modification are a good candidate for bioimaging and biosensing due to their low toxicity and good biocompatibility. Although carbon is not an intrinsically toxic substance, carbon nanomaterials such as CDs may cause risks to human...
Article
Carbon dots (CDs) are promising nanomaterials for biosensing, bioimaging, and drug delivery due to their large surface area, excellent optical properties, and thermal and chemical stability. However, biosafety of CDs is still understudied, and there is not a generally accepted standard to evaluate the toxicity of CDs. We present a gradient network...
Article
New membrane materials and processes have been extensively developed due to urgent needs for much more economic separation processes. Recently, graphene has been confirmed to be an excellent separation membrane. As there is no support in the obtained three-dimensional (3D) architecture constructed from tubular graphene network, it is possible to ta...
Article
Full-text available
Direct pyrolysis of citric acid (CA) has been proved to be a facile bottom–up technique for making pristine carbon dots (CD) with homogenous size distribution. However, limited reports are available on systematic optimization of carbonization degree. In this investigation, pyrolysis temperatures between 160 °C and 220 °C were studied, based on CA t...
Article
Although application of nanoparticles in enhanced oil recovery has been reported, understanding the transport and retention of nanoparticles in the oilfield reservoir is still a crucial issue. In this research, behavior of low concentration of TiO2 nanoparticles in core plug porous media and the mechanism of increasing oil recovery were investigate...
Article
The diffusion and deposition of TiO2 nanoparticles in EOR application was investigated in this paper. TEM image of nanoparticles showed that the particles are elongated with average long and short axis sizes of 54 and 15 nm. Water flooding tests showed that the recovery factor can be improved from 49% to 80% using TiO2 nanoparticles. Viscosity and...
Article
Anatase and amorphous TiO2 nanoparticles were used to improve recovery of heavy oil from sandstone cores. Before performing core floods, the stability of nanoparticles at different salinities was tested using ζ potential and ultraviolet–visible (UV–vis) methods. While water recovered only 49% of the oil in the core flood experiments, 0.01% anatase...

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Projects

Projects (4)
Project
Design and Developing smartphone-based platforms for detection.
Project
Application of carbon nanomaterials in different new areas. Carbon nanomaterials include carbon dots, graphene quantum dots, carbon nanotubes, graphene, graphene oxide, reduced graphene oxide, etc.