Tags: Analytical Seminar


Noninvasive Wearable Electrochemical Glucose Sensors

There has been an increase in interest in recent years in developing noninvasive wearable glucose sensors for continuous glucose monitoring. Diabetes ranks among one of the leading causes of death globally, and is one of the most widely spread modern lifestyle diseases.1 Current blood glucose monitors are limited to periodic testing and are more invasive compared to new wearable sensors.1,2 These noninvasive sensors eliminate the need for…


SERS (Surface Enhanced Raman Scattering) Spectroscopy with Gold Nanoparticles for Diagnosis


Development of Potential Pulse Deposition (PPD) of CdTe and its application on Au nanorods

CdTe is a promising  photovoltaic absorber material for efficient solar energy conversion due to its ideal band gap (~1.5 eV). Thin films of Cadmium telluride (CdTe) were electrodeposited onto Au substrates from an acidic aqueous solution of CdSO4, and TeO2 using a flow cell at room temperature. The deposition potential and solution flow were controlled and optimized during the deposition. Compared with traditional codeposition1 and…


Leverage Physiology for Bio-responsive Drug Delivery

Spurred by recent advances in materials chemistry, molecular pharmaceutics and nanobiotechnology, stimuli-responsive “smart” systems offer opportunities for precisely delivering drugs in dose-, spatial- and temporal-controlled manners. In this talk, I will discuss our ongoing efforts in developing physiological signal-triggered on-demand drug delivery systems, especially based on artificial cells or engineered cells. I will first present the…


Microfluidic Label-Free Ferrohydrodynamic Separation of Circulating Tumor Cells

Circulating tumor cells (CTCs) have significant implications in both basic cancer research and clinical applications. To address the limited availability of viable CTCs for fundamental and clinical investigations, effective separation of extremely rare CTCs from blood is critical. Ferrohydrodynamic cell separation (FCS), a microfluidic label-free method that conducts cell sorting based on cell size difference in biocompatible ferrofluids, has…


Structural DNA Nanotechnology: Complex Self-Assembly and Applications

A key challenge in nanotechnology is to design and fabricate nanostructures and nanodevices. Such systems can serve as platforms for basic science research (structural biology, molecular biology, for instance) at nanoscale, and for practical applications. Rational-designed self-assembly, particularly structural DNA nanotechnology has attracted significant attentions due to its programmability and its precise control of matter at nanoscale. I am…


Cu Dopants in Semiconductor Nanoparticles


Developing Cost Competitive Energy Conversion and Storage Systems: Solar Fuels and Solid Flow Batteries

Becoming more energy sustainable is a major current societal goal, which, of necessity, involves greater use of sunlight as a primary source of energy. However, if solar energy is ever to displace fossil fuels as our main energy source, it could only do so if we solve the energy storage problem.  The first portion of the talk will introduce our research efforts to develop novel nanomaterials and architectures to convert light energy…


Bioresponsive Nanomedicines for Cancer and Ischemic Brain Injury

Biologically responsive nanotechnologies have attracted tremendous attentions for controlled delivery of therapeutic molecules and the development of precision medicines. Dr. Shi and his team have recently designed various bioresponsive nanoparticle platforms to tackle the challenges associated with systemic RNA delivery to tumor cells, such as enzymatic degradation, rapid elimination by renal excretion or the mononuclear phagocyte system, and…


Rheology of Chemical Reactions

Rheology is a complex field and includes a wide scope of study. Most chemical reactions do not experience notable rheological behavior, however when considering reactions such as suspensions and polymerization, rheology becomes an important factor, due to the unique visco-elastic behavior of these systems. These class of materials experience different responses to stress and strain, thus leading to changes in viscosity and modulus which can be…
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