Robert G. Hjort

ORCID: 0000-0003-2400-0710
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About
Contact & Profiles
Research Areas
  • Electrochemical sensors and biosensors
  • Analytical Chemistry and Sensors
  • Advanced Sensor and Energy Harvesting Materials
  • Biosensors and Analytical Detection
  • Advanced biosensing and bioanalysis techniques
  • Advanced Chemical Sensor Technologies
  • Electrochemical Analysis and Applications
  • Gas Sensing Nanomaterials and Sensors
  • Dye analysis and toxicity
  • Innovation and Socioeconomic Development
  • Electrohydrodynamics and Fluid Dynamics
  • Carbon and Quantum Dots Applications
  • COVID-19 epidemiological studies
  • SARS-CoV-2 detection and testing
  • Graphene research and applications

Iowa State University
2020-2023

Food-borne illnesses are a growing concern for the food industry and consumers, with millions of cases reported every year. Consequently, there is critical need to develop rapid, sensitive, inexpensive techniques pathogen detection in order mitigate this problem. However, current strategies mainly include time-consuming laboratory methods highly trained personnel. Electrochemical in-field biosensors offer low-cost alternative techniques, but electrodes used these require expensive...

10.1021/acssensors.9b02345 article EN ACS Sensors 2020-04-29

The integration of microfluidics and electrochemical cells is at the forefront emerging sensors energy systems; however, a fabrication scheme that can create both in scalable fashion still lacking. We present one-step, mask-free process to create, pattern, tune laser-induced graphene (LIG) with ubiquitous CO2 laser. laser parameters are adjusted LIG different electrical conductivity, surface morphology, wettability without need for postchemical modification. Such definitive control over...

10.1021/acsnano.1c04197 article EN ACS Nano 2021-11-23

Wearable biosensors promise real-time measurements of chemicals in human sweat, with the potential for dramatic improvements medical diagnostics and athletic performance through continuous metabolite electrolyte monitoring. However, sweat sensing is still its infancy, questions remain about whether can be used purposes. sensors are focused on proof-of-concept designs that not scalable multisubject trials, which could elucidate utility health Moreover, many wearable do include microfluidics...

10.1021/acsami.3c04665 article EN ACS Applied Materials & Interfaces 2023-08-01

Saliva-based sensors are becoming increasingly important in medical diagnostics and sports medicine due to the plethora of biomedically relevant analytes found endogenously within fluid inherently noninvasive nature sensing protocols. Salivary lactate potassium have been shown be key indicators for monitoring fatigue, hydration, overall health, frequent is crucial preventative treatment strategies. Low-cost test strip combined with saliva swab sampling could enable such monitoring, this end,...

10.1021/acsanm.3c03786 article EN ACS Applied Nano Materials 2023-11-15

Flexible carbon nanomaterial sensors offer a low-cost, facile fabrication approach toward producing at an industrial scale for electrochemical sensing. Graphene and nanotube (CNT) based have been studied, with various methods available, including high-quality thin film graphene CNTs via chemical vapor deposition (CVD). However, CVD is high-temperature vacuum process that low-yielding consequently costly, hindering its implementation into single-use test strip sensors. Other methods, such as...

10.1149/ma2024-01502742mtgabs article EN Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM) 2024-08-09

Carbon-nanomaterial sensors offer promising routes toward low-cost, high-throughput electrochemical sensors. Carbon nanomaterials, such as graphene and carbon nanotube (CNT), have been studied with various fabrication methods to produce sensors, including high-quality thin film CNT by chemical vapor deposition. However, the complexity cost associated their hindered implementation into single-use test strip Even high-yield mechanical and/or exfoliation of from graphite followed solution phase...

10.1149/ma2024-01422382mtgabs article EN Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM) 2024-08-09

Carbon dots for iron sensing in hydroponic systems. Iron (Fe) is a required micronutrient plants the production of chlorophyll and transport oxygen.

10.1039/d3ra01713c article EN cc-by-nc RSC Advances 2023-01-01
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