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Skip to Search Results- 1Alford, Spencer Caleb
- 1Anbukarasu, Preetam
- 1Assempour, Nazanin
- 1Belal, Ahmed S. F.
- 1Carlson, Haley J
- 1Dai, Rongching.
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Understanding Surface Forces and Interaction Mechanisms in Mineral Flotation by Atomic Force Microscopy
DownloadFall 2019
Bubble-particle interactions are ubiquitous and crucial to mineral fotation. The bubble-particle attachment process is mainly governed by three surface forces: van der Waals (vdW), electrical double-layer (EDL), and hydrophobic (HB) forces. Atomic Force Microscopy (AFM) has become the most...
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Fall 2014
Optical imaging of membrane potentials has become an immensely popular approach to study neuronal activity. Over the past decades, a number of voltage indicators have been introduced including the voltage sensitive fluorescent protein (VSFP) and microbial rhodopsins. However, most of these...
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Fall 2018
Enzyme-responsive degradable polymers are of great interest both from fundamental science and real-world application perspectives. Enzyme-responsive polymers, because of their ability to interface with and sense biological processes, can have many applications in systems that operate at the edge...
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Fall 2009
Resonant microcantilevers are promising transducers for bacteria detection because of their high sensitivities. Surface stress and mass from adsorbates affect the resonant frequency. We developed a novel method for decoupling the frequency contributions of a change in mass and surface stress on a...
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Fall 2009
Microcantilever sensor has gained much popularity because of its high sensitivity and selectivity. It consists of a micro-sized cantilever that is usually coated on one side with chemical/biological probe agents to generate strong attraction to target molecules. The interactions between the probe...
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Probing Deformable Oil-Water Interfaces by Atomic Force Microscopy and Cascade Partial Coalescence Measurements
DownloadFall 2016
Phase separation of stable oil-in-water and water-in-oil emulsions poses major challenges for a variety of industries, including the petroleum industry. The stability and destabilizing of petroleum emulsions highly depend on interfacial properties such as surface/interfacial charges, interfacial...
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Fall 2016
The field of conducting polymers and mainly organic electrochemical transistors (OECT) have been investigated for bioelectronics applications. Advantages such as conformability, high quality electrical contact, ease of fabrication and biocompatibility made OECTs a great potential of future bio...
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Observing and Manipulating Single Electrons Confined to Silicon Dangling Bond Ensembles with Non-Contact Atomic Force Microscopy
DownloadFall 2018
Non-contact atomic force microscopy (nc-AFM) is capable of inducing and resolving single-electron charge transitions of surface adsorbates. Here, these techniques are extended by studying the charge configurations of dangling bond (DB) ensembles on the hydrogen-terminated silicon surface. nc-AFM...
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Spring 2014
Crude oils contain a distribution of molecules with diverse chemical structures and molecular weights. Asphaltenes are considered the most problematic of these structures. We have investigated the adsorption and aggregation of asphaltenes on surfaces using scanning probe microscopy. Modifying the...
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Integration of Nanomechanical Resonators in Microfluidic Systems for Specific Protein Detection
DownloadFall 2009
Nanomechanical resonators offer a pathway towards highly sensitive and label-free detection of biomolecules by transducing the mass of bound analytes into resonant frequency shifts. Zeptogram level and even single cell detections have been successfully achieved by others. However, these...