2.

A. Elhadad, G. Li, J. Yang, D. Liu, and S. Choi, "3D-Printed Stainless Steel Electrodes for Advancing MEMS Microbial Fuel Cells toward Sustainable On-Chip Energy", IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS) 2025, Jan. 19 - 23, 2025, Kaohsiung, Taiwan, in-print

1.

Y. "Lexi" Gao and  S. Choi “A Wearable Paper-based Hybrid Energy Harvesting from Human Sweat and Ambient Moisture,” IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS) 2025, Jan. 19 - 23, 2025, Kaohsiung, Taiwan, in-print

8.

Y. "Lexi" Gao, A. Elhadad, and S. Choi, “Paper-based wearable moist-electric generators with efficient atmosphreic water capture,” Hilton Head Workshop 2024: A Solid-State Sensors, Actuators and Microsystems Workshop, June 2 - June 6, 2024, Hilton Head Island, SC, USA (Oral Presentation). Technical Digest Solid-State Sensor Actuator and Microsystems, pp. 63-66.

7.

Z. Rafiee, M. Rezaie, and S. Choi, “Advanced Paper-based Organic Electrochemical Transistors:  A novel approach for rapid point-of-care antibiotic susceptibility testing,” Hilton Head Workshop 2024: A Solid-State Sensors, Actuators and Microsystems Workshop, June 2 - June 6, 2024, Hilton Head Island, SC, USA. Technical Digest Solid-State Sensor Actuator and Microsystems, pp. 120-123.

6.

M. Rezaie, and S. Choi, “Probiotic-powered Ingestible Capsules: A novel approach to vibrational therapy,” Hilton Head Workshop 2024: A Solid-State Sensors, Actuators and Microsystems Workshop, June 2 - June 6, 2024, Hilton Head Island, SC, USA. Technical Digest Solid-State Sensor Actuator and Microsystems, pp. 145-148.

5.

A. Elhadad, Y. "Lexi" Gao, and S. Choi, “A microfabricated gastrobot for sustainable on-water propulsion,” IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS) 2024, Jan. 21-25, 2024, Austin, Texas, USA, pp. 497-500

4.

Y. "Lexi" Gao, A. Elhadad, and S. Choi, “Bacterial endospore based wearable biosensors for selective and sensitive glucose monitoring,,” IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS) 2024, Jan. 21-25, 2024, Austin, Texas, USA, pp. 402-405 (This paper has been selected as a finalist for the Best Poster Award Competition)

3.

Y. "Lexi" Gao, and S. Choi, “Paper-based moist-electric generators for scalable, disposable, and green power generation,” IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS) 2024, Jan. 21-25, 2024, Austin, Texas, USA, pp. 741-744

2.

M. Rezaie, and S. Choi, “Microalgae-enabled artificial plants for indoor air quality improvement and electricity generation,” IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS) 2024, Jan. 21-25, 2024, Austin, Texas, USA, pp.280-283  (Oral Presentation)

1.

Z. Rafiee, and S. Choi, “Integrated papertronics for a sustainable future,” IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS) 2024, Jan. 21-25, 2024, Austin, Texas, USA, pp. 600-603

7.

A. Elhadad, M. Rezaie, and S. Choi, “A buoyant biosolar cell array with long-lasting high-power output: energy harvesting from aquatic environments,” PowerMEMS 2022: The 21st International Conference on Micro and Nanotechnology for Power generation and Energy Conversion Applications, Dec. 12-15, 2022, Salt Lake City, USA, pp. 126-129. (Oral Presentation)

6.

M. Rezaie, A. Elhadad, and S. Choi, “Stackable, storage, millimeter-scale biobatteries having high instantaneous power output,” PowerMEMS 2022: The 21st International Conference on Micro and Nanotechnology for Power generation and Energy Conversion Applications, Dec. 12-15, 2022, Salt Lake City, USA, pp. 237-240.

5.

A. Elhadad, and S. Choi, “3-D Printed Redox-active Organic Electrodes to Bridge across Biology and Electronics,” Hilton Head Workshop 2022: A Solid-State Sensors, Actuators and Microsystems Workshop, June 5 - June 9, 2022, Hilton Head Island, SC, USA, pp. 282-283 (Late News)

4.

M. Landers, A. Elhadad, and S. Choi, “Papertronics: Fully Paper-Integrated Resistor, Capacitor, and Transistor Circuits,” Hilton Head Workshop 2022: A Solid-State Sensors, Actuators and Microsystems Workshop, June 5 - June 9, 2022, Hilton Head Island, SC, USA,  pp. 419-422 (This paper has been selected as a finalist for the Best Poster Award Competition)

3.

Z. Rafiee, M. Rezaie, O. Noruz Shamsian, and S. Choi, “An Equipment-free Papertronic Sensing System for Point-of-Care Monitoring of Antimicrobial Susceptibility,” Hilton Head Workshop 2022: A Solid-State Sensors, Actuators and Microsystems Workshop, June 5 - June 9, 2022, Hilton Head Island, SC, USA, pp. 118-121.

2.

Y. "Lexi" Gao, and S. Choi, “A Sweat-based Self-Charging Power System: Integration of Microbial Energy Harvesting and Storing Devices,” Hilton Head Workshop 2022: A Solid-State Sensors, Actuators and Microsystems Workshop, June 5 - June 9, 2022, Hilton Head Island, SC, USA, pp. 288-291.

1.

M. Rezaie, Z. Rafiee, and  S. Choi “Biopower-in-Gut: An Ingestible Bacteria-Powered Battery Capsule,” Hilton Head Workshop 2022: A Solid-State Sensors, Actuators and Microsystems Workshop, June 5 - June 9, 2022, Hilton Head Island, SC, USA, pp. 85-88 (Oral Presentation) (This paper has been selected as the Best Paper Award Winner)

8.

J. Ryu, M. Tahermia, M. Mohammadifar, Y. Gao, and S. Choi, "Moisture-Responsive Paper Robots", Hilton Head Workshop 2020: A Solid-State Sensors, Actuators and Microsystems Workshop, May 31 - June 4, 2020, Hilton Head Island, SC. Published in the IEEE JMEMS Special Proceeding, 29 (5), pp. 1049-1053.

7.

Y. Gao, J. Kim, J. Ryu, and S. Choi, "Additive Manufacturing of Living Electrodes", Hilton Head Workshop 2020: A Solid-State Sensors, Actuators and Microsystems Workshop, May 31 - June 4, 2020, Hilton Head Island, SC. Published in the IEEE JMEMS Special Proceeding, 29 (5), pp. 1069-1073.

6.

J. Ryu, Y. Gao, J. H. Cho, and S. Choi, "A 1-D Yarn-based Biobattery for Scalable Power Generation in 2-D and 3-D Structured Textiles", Hilton Head Workshop 2020: A Solid-State Sensors, Actuators and Microsystems Workshop, May 31 - June 4, 2020, Hilton Head Island, SC. Published in the IEEE JMEMS Special Proceeding, 29 (5), pp. 1064-1068.

5.

M. Mohammadifar, M. Tahermia, J. Yang, A. Koh, and S. Choi, "A Skin-mountable bacteria-powered battery system for self-powered medical devices", IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS), Jan. 18 - 22, 2020, Vancouver, Canada, pp. 72-75 (Oral Presentation)

4.

M. Tahermia, Y. Gao, M. Mohammadifar, M.R. Oefelein, L.C. Cook and S. Choi, "Characterizing electrogenic capabilities of human gut microbes", IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS), Jan. 18 - 22, 2020, Vancouver, Canada,  pp. 303-306

3.

M. Tahermia, M. Mohammadifar, Shuai Feng, and S. Choi, "Biogenic palladium nanoparticles for improving bioelectricity generation in microbial fuel cells", IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS), Jan. 18 - 22, 2020, Vancouver, Canada, pp. 425-428

2.

L. Liu,  and S. Choi, "A cyanobacterial artificial leaf for simultaneous carbon dioxide reduction and bioelectricity generation", IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS), Jan. 18 - 22, 2020, Vancouver, Canada, pp. 1071-1074

1.

L. Liu, and  S. Choi “A High-performance photo-biosupercapacitor based on manganese oxide/carbon nanotube/PEDOT:PSS nanocomposites ,” IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS), Jan. 18 - 22, 2020, Vancouver, Canada, pp. 554-557

2.

L. Liu,  and S. Choi, "A 3D printed cyanobacterial leaf for carbon dioxide reduction", IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS), Jan. 27 - 31, 2019, Seoul, Korea, pp. 222-225(Oral Presentation)

1.

Y. Gao, L. Liu, J. Cho, and  S. Choi “Flexible and scalable biochemical energy harvesting: a yarn-based biobattery ,” IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS), Jan. 27 - 31, 2019, Seoul, Korea,  pp.  966-969 

10.

L. Liu, M. Mohammadifar, and S. Choi, "Supercapacitive Micro-Bio-Photovoltaics", 18th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2018), Dec. 4-7th, 2018, Daytona Beach, FL, USA,  T4A-01. (Oral presentation) This work was selected as an outstanding paper award finalist.

9.

M. Tahermia, M. Mohammadifar, and S. Choi, "A papertronic sensing system for rapid visual screening of bacterial electrogenicity", 18th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2018), Dec. 4-7th, 2018, Daytona Beach, FL, USA, PT-03b.

8.

M. Mohammadifar, and S. Choi, "A long-lasting microliter-scale microbial biobattery using solid-state inoics", 18th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2018), Dec. 4-7th, 2018, Daytona Beach, FL, USA, T5A-01. (Oral presentation)

7.

M. Mohammadifar, and S. Choi, "A portable and visual electrobiochemical sensor for lactate monitoring in sweat", 12th IEEE International Conference on Nano/Molecular Medicine and Engineering (IEEE-NANOMED), Dec. 2-5th, 2018, Waikiki Beach, HI, USA, pp. 73-77. (Oral presentation) This work was selected as an outstanding paper award finalist.

6.

M. Mohammadifar, and S. Choi, "A paper-based enzymatic sensor array for visual detection of glucose levels in urine", 12th IEEE International Conference on Nano/Molecular Medicine and Engineering (IEEE-NANOMED), Dec. 2-5th, 2018, Waikiki Beach, HI, USA,  pp. 244-247 (Oral presentation)

5.

L. Liu, Y. Gao, S. Lee, and S. Choi, "3-D Bioprinting of cyanobacteria for solar-driven bioelectricity generation in resource-limited environments", 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Jul. 17-21th, 2018, Honolulu, HI, USA, pp. 5329-5332. (Oral presentation)

4.

M. Tahernia, M. Mohammadifar, and S. Choi, "A fully-papertronic biosensor array for high-ghroughput characterization of microbial electrogenicity", 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Jul. 17-21th, 2018, Honolulu, HI, USA, pp. 1-4. (Oral presentation)

3.

Y. Gao, L. Liu, and S. Choi, "A Yarn-based bacteria-powered battery for smart textiles", Hilton Head Workshop 2018: A Solid-state Sensors, Actuators and Microsystems Workshop, Jun. 3- 7th, 2018, Hilton Head Island, SC, USA, pp. 202-205.

2.

H. Chun, M. Mohammadifar, and S. Choi, "Soft Robotics: Fluid-driven self-folding papers", Hilton Head Workshop 2018: A Solid-state Sensors, Actuators and Microsystems Workshop, Jun. 3- 7th, 2018, Hilton Head Island, SC, USA, pp. 163-166.

1.

M. Mohammadifar and  S. Choi “Transient Biobatteries: Microfluidic control for programmable dissolution,” Hilton Head Workshop 2018: A Solid-state Sensors, Actuators and Microsystems Workshop, Jun. 3- 7th, 2018, Hilton Head Island, SC, USA, pp. 171-174.

10.

M. Tahernia, M. Mohammadifar, and S. Choi, "A transparent paper-based 3-D culture system for C. Elegans," MicroTAS 2017, Oct. 22- 26, 2017, Savannah, GA, USA, pp. 1088-1089

9.

S. Pang, Y. Gao, M. Zhu, and S. Choi, "A microfluidic flexible and stretchable biobattery," MicroTAS 2017, Oct. 22- 26, 2017, Savannah, GA, USA, pp. 1427-1428

8.

M. Mohammadifar, and S. Choi, "A high-performance paper-based biobattery stack using Prussian blue cathodes," MicroTAS 2017, Oct. 22- 26, 2017, Savannah, GA, USA, pp. 1453-1454

7.

Y. Gao, and S. Choi, "Squeeze-biobattery: On-demand power generation from lyophilized exoelectrogens using a finger-activated self-contained media pouch," MicroTAS 2017, Oct. 22- 26, 2017, Savannah, GA, USA, pp. 1425-1426

6.

M. Mohammadifar, and S. Choi, "A microbial electricity-based sensor for glucose monitoring in saliva," MicroTAS 2017, Oct. 22- 26, 2017, Savannah, GA, USA, pp. 465-466

5.

L. Liu, W. Yang, and S. Choi, "A membraneless laminar-flow based bio-solar cell," MicroTAS 2017, Oct. 22- 26, 2017, Savannah, GA, USA, pp. 1439-1440

4.

L. Liu, and S. Choi, "A paper-based microfluidic platform for photosynthetic bioelectricity generation" MicroTAS 2017, Oct. 22- 26, 2017, Savannah, GA, USA, pp. 1423-1424

3.

Y. Gao, and S. Choi, "Versatile 3-D Stacking of 2-D Paper-based biobatteries," IEEE MEMS 2017, Jan. 22- 26, 2017, Las Vegas, NV, USA, pp. 448-451

2.

E. Cho, M. Mohammadifar,  and S. Choi, "A Self-powered sensor patch for glucose monitoring in sweat," IEEE MEMS 2017, Jan. 22- 26, 2017, Las Vegas, NV, USA, pp. 366-369

1.

M. Mohammadifar, K. Zhang, and S. Choi, "A saliva-powered paper biobattery for disposable biodevices," IEEE MEMS 2017, Jan. 22- 26, 2017, Las Vegas, NV, USA, pp. 121-124  (Oral presentation) This work was selected as an outstanding paper award finalist.

7.

Y. Gao, M. Mohammadifar, D. Hassett, and S. Choi, "A novel screening platform for electromicrobiology: A 3-D Paper-based Sensing Array with Conductive PEDOT:PSS," IEEE Sensors 2016, Oct. 30- Nov. 2, 2016, Orlando, FL, USA, pp. 1655-1657  (Oral presentation)

6.

M. Mohammadifar, Y. Gao, and S. Choi, "An origami-inspired multicell biobattery stack" IEEE Sensors 2016, Oct. 30- Nov. 2, 2016, Orlando, FL, USA, pp. 1619-1621

5.

M. Mohammadifar, J. Zhang, I. Yazgan, V. Kariuki, Omowunmi Sadik, and S. Choi, "High performance paper-based microbial fuel cells using nanostructured polymers," IEEE Sensors 2016, Oct. 30- Nov. 2, 2016, Orlando, FL, USA, pp. 1727-1729  (Oral presentation)

4.

X. Wei,  M. Mohammadifar, W. Yang, and S. Choi, "A microscale biophotovoltaic device," IEEE Sensors 2016, Oct. 30- Nov. 2, 2016, Orlando, FL, USA,  pp. 1613-1615

3.

X. Wei, W. Yang and S. Choi, "A high power-density, self-sustained hybrid bio-solar cell with co-culture of heterotrophic and photosynthetic bacteria," Hilton Head Workshop 2016: A Solid-state Sensors, Actuators and Microsystems Workshop, Jun. 5- 9th, 2016, Hilton Head Island, SC, USA, pp. 396-399

2.

M. Mohammadifar, J. Zhang, Omowunmi Sadik, and S. Choi, "Origami fabrication of three-dimensional bio-battery with novel anode materials," Hilton Head Workshop 2016: A Solid-state Sensors, Actuators and Microsystems Workshop, Jun. 5- 9th, 2016, Hilton Head Island, SC, USA, pp. 168-171

1.

Y. Gao and S. Choi, "A biological fuel cell microfabricated within a single sheet of paper," Hilton Head Workshop 2016: A Solid-state Sensors, Actuators and Microsystems Workshop, Jun. 5- 9th, 2016, Hilton Head Island, SC, USA, pp.392-395

13.

H. Lee and S. Choi, “A microfluidic prototype for scaling-up microbial fuel cell systems,” IEEE SENSORS 2015,  Nov. 1 - 4, 2015, Busan, Korea, pp. 658 - 661  (Oral presentation)

12.

A. Fraiwan and S. Choi, “A biomicrosystem for simultaneous optical and electrochemical monitoring of electroactive microbial biofilm,” IEEE SENSORS 2015,  Nov. 1 - 4, 2015, Busan, Korea, pp. 197 - 200

11.

W. Yang, X. Wei and S. Choi, “A Two-channel bacteria-based biosensor for water quality monitoring,” IEEE SENSORS 2015,  Nov. 1 - 4, 2015, Busan, Korea, pp. 1913 - 1916  (Oral presentation)

10.

K. Roszkowski and S. Choi, “Continuous biodiesel synthesis in a microfluidic microsystem,” MicroTas 2015,  Oct. 25 - 29, 2015, Gyeongju, Korea, pp. 2047 - 2049

9.

J. Zhang, A. Fraiwan, and S. Choi, "Origami paper-based microbial fuel cells for disposable biosensors," MicroTas 2015,  Oct. 25 - 29, 2015, Gyeongju, Korea, pp. 260 - 262  (Oral presentation)

8.

X. Wei, W. Yang, and S. Choi, “A microfluidic biological solar cell generating high power density,” MicroTas 2015,  Oct. 25 - 29, 2015, Gyeongju, Korea, pp. 2050 - 2052

7.

W. Yang, X. Wei and S. Choi, “A laminar flow biofuel cell array,” MicroTas 2015,  Oct. 25 - 29, 2015, Gyeongju, Korea, pp. 2017 - 2019

6.

H. Lee, and S. Choi, “An origami paper-based bacteria-powered battery with an air-cathode,” Transducers 2015,  Jun. 21 - 25, 2015, Anchorage, Alaska, USA, pp. 1009-1012  (Oral presentation)

5.

G. Choi, and S. Choi, “A paper-based 3D sensor array for electromicrobiology,” Transducers 2015,  Jun. 21 - 25, 2015, Anchorage, Alaska, USA, pp. 1633-1636

4.

H. Lee, and S. Choi, "A biological solar panel," Transducers 2015,  Jun. 21 - 25, 2015, Anchorage, Alaska, USA, pp. 1802-1805

3.

G. Choi, and S. Choi, “Bacterial cell transportation in paper-based microfluidics,” Transducers 2015,  Jun. 21 - 25, 2015, Anchorage, Alaska, USA, pp. 1921-1924

2.

G. Choi, A. Fraiwan, D.J. Hassett and S. Choi, “A paper-based 48-well microbial fuel cell array for rapid and high-throughput screening of electrochemically active bacteria,” IEEE MEMS 2015, Jan. 18 - 22, 2015, Estoril, Portugal, pp. 577-580

1.

H. Lee, W. Yang, X. Wei, A. Fraiwan and S. Choi, "A microsized microbial fuel cell based biosensor for fast and sensitive detection of toxic substrances in water," IEEE MEMS 2015, Jan. 18 - 22, 2015, Estoril, Portugal, pp. 573-576

7.

H. Lee and S. Choi, "A Microfabricated Bio-Solar Cell for Self-Sustainable Field Applications," Hilton Head Workshop 2014: A Solid-state Sensors, Actuators and Microsystems Workshop, Jun. 8- 12th, 2014, Hilton Head Island, SC, USA, pp.258-261

6.

A. Fraiwan, S.P. Adusumilli, D. Han, A.J. Steckl, D.F. Call, C.R. Westgate and S. Choi, "Micro-/Nano-Structured Anodes for Enhanced Performance of Micro-sized Microbial Fuel Cell," Hilton Head Workshop 2014: A Solid-state Sensors, Actuators and Microsystems Workshop, Jun. 8- 12th, 2014, Hilton Head Island, SC, USA, pp.203-206

5.

A. Fraiwan, C. Dai, D. J. Hassett and S. Choi, "A Paper-based Microbial Sensor Array for Rapid Screening of Electricity-producing Bacteria," Hilton Head Workshop 2014: A Solid-state Sensors, Actuators and Microsystems Workshop, Jun. 8- 12th, 2014, Hilton Head Island, SC, USA, pp.115-118  (Oral presentation)

4.

S. Yoon,  H. Lee, A. Fraiwan, C. Dai and S. Choi, "A Micro-sized Microbial Solar Cell," IEEE NEMS 2014, Apr. 13 - 16, 2014, Hawaii,  USA, pp. 265-268 (Selected as 5 best papers) - Featured in IEEE Nanotechnology Magazine  (Oral presentation)

3.

A. Fraiwan, C. Dai, N.K. Sidhu, A. Rastogi and, S.Choi, “A Micro-sized Microbial Fuel Cell with Electrochemical Sensing Functionality,” IEEE NEMS 2014, Apr. 13 - 16, 2014, Hawaii,  USA, pp. 635-638  (Oral presentation)

2.

S. Chen, C. Dai, A. Fraiwan, and S. Choi, “A Miniaturized Parallel Analyses Platform for Rapid Electrochemical Discoveries of Microbial Activities,” IEEE NEMS 2014, Apr. 13 - 16, 2014, Hawaii,  USA, pp. 639-642  (Oral presentation)

1.

A. Fraiwan, C. Dai, T. H. Nguyen, and S. Choi, "A Paper-based Bacteria-Powered Battery having High Power Generation," IEEE NEMS 2014, Apr. 13 - 16, 2014, Hawaii,  USA, pp. 394-397
 (Oral presentation)

4.

A. Fraiwan, and S. Choi, "A multi-anode paper-based microbial fuel cell for disposable biosensors", IEEE Sensors, Nov. 4 - 6, 2013, Baltimore, Maryland, USA, pp. 1908-1911  (Oral presentation)

3.

C. Dai, S. Chen, A. Fraiwan, and S. Choi, "Direct Visualization of Electrogenic Bacteria in a Microfabricated Microbial Fuel Cell", IEEE Sensors, Nov. 4 - 6, 2013, Baltimore, Maryland, USA, pp. 636-639  (Oral presentation)

2.

A. Fraiwan, S. Mukherjee, S. Sundermier, and S. Choi, "A Microfabricated Paper-based Microbial Fuel Cell", IEEE International Conference on Micro-Electro-Mechanical-Systems (MEMS), Jan. 20 - 24, 2013, Taipei, Taiwan, pp.809-812 

1.

A. Fraiwan, S. Sundermier, D. Han, A. Steckl, D. Hassett, and  S. Choi “Challenges in Development and Operation of MEMS Microial fuel cells,” Power MEMS 2012, Dec. 2-5, 2012, Atlanta, USA, pp. 383 -386.