Southern Methodist University

Visiting Research Scholar

-worked in a Laboratory enviroment helping the principal investigator preparing and conducting experiments for proposals submission
-analyzed and prepared written reports about experimental data

Southern Methodist University

Research Assistant at Microsystems research lab.

-designed and manufactured untethered micro-photonic sensors based on morphology
dependent resonances (pressure sensors, shear stress sensors, temperature sensors, force sensors)
-conducted fluid dynamics experiments
-mentored undergraduate and high school students
-evaluated laboratory equipments and prepared purchase orders

Erre Group SRL

Intern

-dimensioned a solar power plant

University of North Texas

Assistant Professor

Teaching:
MEET 3940 - Fluid Mechanics Applications
MEET 3650 - Mechanical Components Design
Research:
Founder and Director of the Photonics Micro-Devices Fabrication Laboratory (sensors' development, instrumentation and flow control, and biomedical micro-devices)

Texas A&M University-Kingsville

Lecturer

*Teaching undergraduate and graduate courses in the department of mechanical and industrial engineering

Graduate
¥ MEEN 5337 (Summer 2017) Engineering Analysis in Appl. Mechanics
¥ MEEN 5326 (Spring 2017) Control Systems Engineering
¥ MEEN 5337 (Spring 2017) Engineering Analysis in Appl. Mechanics
¥ MEEN 5314 (Spring 2017) Finite Element Methods in Engineering
¥ MEEN 5330 (Fall 2016) Continuum Mechanics (2 sections)
¥ MEEN 5330 (Summer 2016) Continuum Mechanics
¥ MEEN 5314 (Spring 2016) Finite Element Methods in Engineering
¥ IEEN 5332 (Spring 2016) Manufacturing System Design

Undergraduate
¥ MEEN 3348 (Summer 2017) Heat Transfer
¥ MEEN 3352 (Spring 2017) Kinematics of Machines
¥ MEEN 1310 (Fall 2016) Engineering Graphic I (Lectures and Lab)
¥ MEEN 3352 (Fall 2016) Kinematics of Machines
¥ MEEN 4345 (Summer 2016) Engineering Vibrations (independent study)
¥ MEEN 3352 (Spring 2016) Kinematics of Machines
¥ MEEN 4345 (Spring 2016) Engineering Vibrations

*Undergraduate students adviser

ASME (The American Society of Mechanical Engineers)

Co-managing the session of Sustainable Infrastructure & Transportation in the ASME Power and Energy 2017 conference

ASME (The American Society of Mechanical Engineers)

Co-managing the session "Biomedical Transducers for Imaging and Wearable Devices" at the ASME IMECE 2017 conference

A Wireless Photonic Intraocular Pressure Sensor

ASME

A Wireless Photonic Intraocular Pressure Sensor

ASME

A Wireless Photonic Intraocular Pressure Sensor

ASME

A Wireless Photonic Intraocular Pressure Sensor

ASME

A Wireless Photonic Intraocular Pressure Sensor

ASME

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR FOR MULTIPLEXED BIOSENSING APPLICATIONS

ASME Journal of Engineering and Science in Medical Diagnostics and Therapy

Whispering gallery mode (WGM) resonators exhibit a high quality factor Q and a small mode volume; they usually exhibit high resolution when used as sensors. The light trapped inside a polymeric micro-cavity travels through total internal reflection generating the whispering gallery modes (WGMs). A laser or a lamp is used to power the microlaser by using a laser dye embedded within the resonator. The excited fluorescence of the dye couples with the optical modes. The optical modes (laser modes) are seen as sharp peaks in the emission spectrum with the aid of an optical interferometer. The position of these optical modes is sensitive to any change in the morphology of the resonator. However, the laser threshold of these microlasers is of few hundreds of microjoules per square centimeter (fluence) usually. In addition, the excitation wavelength’s light powering the device must be smaller than the microlasers size. When metallic nanoparticles are added to the microlaser, the excited surface plasmon couples with the emission spectrum of the laser dye. Therefore, the fluorescence of the dye can be enhanced by this coupling; this in turn, lowers the power threshold of the microlaser. Also, due to a plasmonic effect, it is possible to use smaller microlasers. In addition, a new sensing modality is enabled based on the variation of the optical modes’ amplitude with the change in the morphology’s microlaser. This opens a new avenue of low power consumption microlasers and photonics multiplexed biosensors.

A Wireless Photonic Intraocular Pressure Sensor

ASME

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR FOR MULTIPLEXED BIOSENSING APPLICATIONS

ASME Journal of Engineering and Science in Medical Diagnostics and Therapy

Whispering gallery mode (WGM) resonators exhibit a high quality factor Q and a small mode volume; they usually exhibit high resolution when used as sensors. The light trapped inside a polymeric micro-cavity travels through total internal reflection generating the whispering gallery modes (WGMs). A laser or a lamp is used to power the microlaser by using a laser dye embedded within the resonator. The excited fluorescence of the dye couples with the optical modes. The optical modes (laser modes) are seen as sharp peaks in the emission spectrum with the aid of an optical interferometer. The position of these optical modes is sensitive to any change in the morphology of the resonator. However, the laser threshold of these microlasers is of few hundreds of microjoules per square centimeter (fluence) usually. In addition, the excitation wavelength’s light powering the device must be smaller than the microlasers size. When metallic nanoparticles are added to the microlaser, the excited surface plasmon couples with the emission spectrum of the laser dye. Therefore, the fluorescence of the dye can be enhanced by this coupling; this in turn, lowers the power threshold of the microlaser. Also, due to a plasmonic effect, it is possible to use smaller microlasers. In addition, a new sensing modality is enabled based on the variation of the optical modes’ amplitude with the change in the morphology’s microlaser. This opens a new avenue of low power consumption microlasers and photonics multiplexed biosensors.

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR

ASME IMECE

A Wireless Photonic Intraocular Pressure Sensor

ASME

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR FOR MULTIPLEXED BIOSENSING APPLICATIONS

ASME Journal of Engineering and Science in Medical Diagnostics and Therapy

Whispering gallery mode (WGM) resonators exhibit a high quality factor Q and a small mode volume; they usually exhibit high resolution when used as sensors. The light trapped inside a polymeric micro-cavity travels through total internal reflection generating the whispering gallery modes (WGMs). A laser or a lamp is used to power the microlaser by using a laser dye embedded within the resonator. The excited fluorescence of the dye couples with the optical modes. The optical modes (laser modes) are seen as sharp peaks in the emission spectrum with the aid of an optical interferometer. The position of these optical modes is sensitive to any change in the morphology of the resonator. However, the laser threshold of these microlasers is of few hundreds of microjoules per square centimeter (fluence) usually. In addition, the excitation wavelength’s light powering the device must be smaller than the microlasers size. When metallic nanoparticles are added to the microlaser, the excited surface plasmon couples with the emission spectrum of the laser dye. Therefore, the fluorescence of the dye can be enhanced by this coupling; this in turn, lowers the power threshold of the microlaser. Also, due to a plasmonic effect, it is possible to use smaller microlasers. In addition, a new sensing modality is enabled based on the variation of the optical modes’ amplitude with the change in the morphology’s microlaser. This opens a new avenue of low power consumption microlasers and photonics multiplexed biosensors.

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR

ASME IMECE

An Untethered Photonic Sensor for Wall Pressure Measurement

Optics letters

In this paper we study a novel untethered photonic wall pressure sensor that uses as sensing element a dome shaped micro-scale laser. Since the sensor does not require any optical or electrical cabling, it allows measurements where cabling tends to be problematic. The micro-laser is made by a mixture Trimethylolpropan Tri(3-mercaptopropionate), commercial name THIOCURE and Polyethylene (glycol) Diacrylate (PEGDA) mixed with a solution of rhodamine 6G. Two different volume ratios between the THIOCURE and the PEGDA are studied, since different ratios lead to different mechanical properties. In addition, two different sensor configurations are presented: (i) sensor coupled to a membrane, that allows differential wall pressure measurement and (ii) sensor without membrane that allows absolute wall pressure measurement. The sensitivity plots are presented in the paper for both sensor configurations and polymer ratios.

A Wireless Photonic Intraocular Pressure Sensor

ASME

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR FOR MULTIPLEXED BIOSENSING APPLICATIONS

ASME Journal of Engineering and Science in Medical Diagnostics and Therapy

Whispering gallery mode (WGM) resonators exhibit a high quality factor Q and a small mode volume; they usually exhibit high resolution when used as sensors. The light trapped inside a polymeric micro-cavity travels through total internal reflection generating the whispering gallery modes (WGMs). A laser or a lamp is used to power the microlaser by using a laser dye embedded within the resonator. The excited fluorescence of the dye couples with the optical modes. The optical modes (laser modes) are seen as sharp peaks in the emission spectrum with the aid of an optical interferometer. The position of these optical modes is sensitive to any change in the morphology of the resonator. However, the laser threshold of these microlasers is of few hundreds of microjoules per square centimeter (fluence) usually. In addition, the excitation wavelength’s light powering the device must be smaller than the microlasers size. When metallic nanoparticles are added to the microlaser, the excited surface plasmon couples with the emission spectrum of the laser dye. Therefore, the fluorescence of the dye can be enhanced by this coupling; this in turn, lowers the power threshold of the microlaser. Also, due to a plasmonic effect, it is possible to use smaller microlasers. In addition, a new sensing modality is enabled based on the variation of the optical modes’ amplitude with the change in the morphology’s microlaser. This opens a new avenue of low power consumption microlasers and photonics multiplexed biosensors.

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR

ASME IMECE

An Untethered Photonic Sensor for Wall Pressure Measurement

Optics letters

In this paper we study a novel untethered photonic wall pressure sensor that uses as sensing element a dome shaped micro-scale laser. Since the sensor does not require any optical or electrical cabling, it allows measurements where cabling tends to be problematic. The micro-laser is made by a mixture Trimethylolpropan Tri(3-mercaptopropionate), commercial name THIOCURE and Polyethylene (glycol) Diacrylate (PEGDA) mixed with a solution of rhodamine 6G. Two different volume ratios between the THIOCURE and the PEGDA are studied, since different ratios lead to different mechanical properties. In addition, two different sensor configurations are presented: (i) sensor coupled to a membrane, that allows differential wall pressure measurement and (ii) sensor without membrane that allows absolute wall pressure measurement. The sensitivity plots are presented in the paper for both sensor configurations and polymer ratios.

A Wireless Photonic Intraocular Pressure Sensor

ASME

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR FOR MULTIPLEXED BIOSENSING APPLICATIONS

ASME Journal of Engineering and Science in Medical Diagnostics and Therapy

Whispering gallery mode (WGM) resonators exhibit a high quality factor Q and a small mode volume; they usually exhibit high resolution when used as sensors. The light trapped inside a polymeric micro-cavity travels through total internal reflection generating the whispering gallery modes (WGMs). A laser or a lamp is used to power the microlaser by using a laser dye embedded within the resonator. The excited fluorescence of the dye couples with the optical modes. The optical modes (laser modes) are seen as sharp peaks in the emission spectrum with the aid of an optical interferometer. The position of these optical modes is sensitive to any change in the morphology of the resonator. However, the laser threshold of these microlasers is of few hundreds of microjoules per square centimeter (fluence) usually. In addition, the excitation wavelength’s light powering the device must be smaller than the microlasers size. When metallic nanoparticles are added to the microlaser, the excited surface plasmon couples with the emission spectrum of the laser dye. Therefore, the fluorescence of the dye can be enhanced by this coupling; this in turn, lowers the power threshold of the microlaser. Also, due to a plasmonic effect, it is possible to use smaller microlasers. In addition, a new sensing modality is enabled based on the variation of the optical modes’ amplitude with the change in the morphology’s microlaser. This opens a new avenue of low power consumption microlasers and photonics multiplexed biosensors.

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR

ASME IMECE

An Untethered Photonic Sensor for Wall Pressure Measurement

Optics letters

In this paper we study a novel untethered photonic wall pressure sensor that uses as sensing element a dome shaped micro-scale laser. Since the sensor does not require any optical or electrical cabling, it allows measurements where cabling tends to be problematic. The micro-laser is made by a mixture Trimethylolpropan Tri(3-mercaptopropionate), commercial name THIOCURE and Polyethylene (glycol) Diacrylate (PEGDA) mixed with a solution of rhodamine 6G. Two different volume ratios between the THIOCURE and the PEGDA are studied, since different ratios lead to different mechanical properties. In addition, two different sensor configurations are presented: (i) sensor coupled to a membrane, that allows differential wall pressure measurement and (ii) sensor without membrane that allows absolute wall pressure measurement. The sensitivity plots are presented in the paper for both sensor configurations and polymer ratios.

Towards a Photonic Sensor based Brain-Computer Interface (BCI)

(ISC)² Security Congress

A Wireless Photonic Intraocular Pressure Sensor

ASME

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR FOR MULTIPLEXED BIOSENSING APPLICATIONS

ASME Journal of Engineering and Science in Medical Diagnostics and Therapy

Whispering gallery mode (WGM) resonators exhibit a high quality factor Q and a small mode volume; they usually exhibit high resolution when used as sensors. The light trapped inside a polymeric micro-cavity travels through total internal reflection generating the whispering gallery modes (WGMs). A laser or a lamp is used to power the microlaser by using a laser dye embedded within the resonator. The excited fluorescence of the dye couples with the optical modes. The optical modes (laser modes) are seen as sharp peaks in the emission spectrum with the aid of an optical interferometer. The position of these optical modes is sensitive to any change in the morphology of the resonator. However, the laser threshold of these microlasers is of few hundreds of microjoules per square centimeter (fluence) usually. In addition, the excitation wavelength’s light powering the device must be smaller than the microlasers size. When metallic nanoparticles are added to the microlaser, the excited surface plasmon couples with the emission spectrum of the laser dye. Therefore, the fluorescence of the dye can be enhanced by this coupling; this in turn, lowers the power threshold of the microlaser. Also, due to a plasmonic effect, it is possible to use smaller microlasers. In addition, a new sensing modality is enabled based on the variation of the optical modes’ amplitude with the change in the morphology’s microlaser. This opens a new avenue of low power consumption microlasers and photonics multiplexed biosensors.

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR

ASME IMECE

An Untethered Photonic Sensor for Wall Pressure Measurement

Optics letters

In this paper we study a novel untethered photonic wall pressure sensor that uses as sensing element a dome shaped micro-scale laser. Since the sensor does not require any optical or electrical cabling, it allows measurements where cabling tends to be problematic. The micro-laser is made by a mixture Trimethylolpropan Tri(3-mercaptopropionate), commercial name THIOCURE and Polyethylene (glycol) Diacrylate (PEGDA) mixed with a solution of rhodamine 6G. Two different volume ratios between the THIOCURE and the PEGDA are studied, since different ratios lead to different mechanical properties. In addition, two different sensor configurations are presented: (i) sensor coupled to a membrane, that allows differential wall pressure measurement and (ii) sensor without membrane that allows absolute wall pressure measurement. The sensitivity plots are presented in the paper for both sensor configurations and polymer ratios.

Towards a Photonic Sensor based Brain-Computer Interface (BCI)

(ISC)² Security Congress

Dye doped micro-droplets as a sensor for fluid dynamics applications

APS Meeting Abstracts

We report that micro-droplets can be used as sensors for fluid dynamics applications. These microscale droplets in liquid or solid form are made of polymers that are doped with dyes. These tiny droplets behave has micro-scale optical cavities that support optical modes. The optical modes are excited remotely using a Nd:YAG laser with pulse repetition of 10Hz. Here we report the fabrication of the droplets and their feasibility as untethered wall pressure and temperature sensors. When the droplets are exposed to variations of temperature or pressure their morphology (size and index of refraction) change. This in turn leads to a shift of the optical modes. The optical modes and therefore their shifts are monitored using an optical spectrometer.

A Wireless Photonic Intraocular Pressure Sensor

ASME

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR FOR MULTIPLEXED BIOSENSING APPLICATIONS

ASME Journal of Engineering and Science in Medical Diagnostics and Therapy

Whispering gallery mode (WGM) resonators exhibit a high quality factor Q and a small mode volume; they usually exhibit high resolution when used as sensors. The light trapped inside a polymeric micro-cavity travels through total internal reflection generating the whispering gallery modes (WGMs). A laser or a lamp is used to power the microlaser by using a laser dye embedded within the resonator. The excited fluorescence of the dye couples with the optical modes. The optical modes (laser modes) are seen as sharp peaks in the emission spectrum with the aid of an optical interferometer. The position of these optical modes is sensitive to any change in the morphology of the resonator. However, the laser threshold of these microlasers is of few hundreds of microjoules per square centimeter (fluence) usually. In addition, the excitation wavelength’s light powering the device must be smaller than the microlasers size. When metallic nanoparticles are added to the microlaser, the excited surface plasmon couples with the emission spectrum of the laser dye. Therefore, the fluorescence of the dye can be enhanced by this coupling; this in turn, lowers the power threshold of the microlaser. Also, due to a plasmonic effect, it is possible to use smaller microlasers. In addition, a new sensing modality is enabled based on the variation of the optical modes’ amplitude with the change in the morphology’s microlaser. This opens a new avenue of low power consumption microlasers and photonics multiplexed biosensors.

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR

ASME IMECE

An Untethered Photonic Sensor for Wall Pressure Measurement

Optics letters

In this paper we study a novel untethered photonic wall pressure sensor that uses as sensing element a dome shaped micro-scale laser. Since the sensor does not require any optical or electrical cabling, it allows measurements where cabling tends to be problematic. The micro-laser is made by a mixture Trimethylolpropan Tri(3-mercaptopropionate), commercial name THIOCURE and Polyethylene (glycol) Diacrylate (PEGDA) mixed with a solution of rhodamine 6G. Two different volume ratios between the THIOCURE and the PEGDA are studied, since different ratios lead to different mechanical properties. In addition, two different sensor configurations are presented: (i) sensor coupled to a membrane, that allows differential wall pressure measurement and (ii) sensor without membrane that allows absolute wall pressure measurement. The sensitivity plots are presented in the paper for both sensor configurations and polymer ratios.

Towards a Photonic Sensor based Brain-Computer Interface (BCI)

(ISC)² Security Congress

Dye doped micro-droplets as a sensor for fluid dynamics applications

APS Meeting Abstracts

We report that micro-droplets can be used as sensors for fluid dynamics applications. These microscale droplets in liquid or solid form are made of polymers that are doped with dyes. These tiny droplets behave has micro-scale optical cavities that support optical modes. The optical modes are excited remotely using a Nd:YAG laser with pulse repetition of 10Hz. Here we report the fabrication of the droplets and their feasibility as untethered wall pressure and temperature sensors. When the droplets are exposed to variations of temperature or pressure their morphology (size and index of refraction) change. This in turn leads to a shift of the optical modes. The optical modes and therefore their shifts are monitored using an optical spectrometer.

Emission Spectrum Denoising Algorithm for Microlasers-Based Neurotransducers

OSA Advanced Photonics Congress

accepted

A Wireless Photonic Intraocular Pressure Sensor

ASME

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR FOR MULTIPLEXED BIOSENSING APPLICATIONS

ASME Journal of Engineering and Science in Medical Diagnostics and Therapy

Whispering gallery mode (WGM) resonators exhibit a high quality factor Q and a small mode volume; they usually exhibit high resolution when used as sensors. The light trapped inside a polymeric micro-cavity travels through total internal reflection generating the whispering gallery modes (WGMs). A laser or a lamp is used to power the microlaser by using a laser dye embedded within the resonator. The excited fluorescence of the dye couples with the optical modes. The optical modes (laser modes) are seen as sharp peaks in the emission spectrum with the aid of an optical interferometer. The position of these optical modes is sensitive to any change in the morphology of the resonator. However, the laser threshold of these microlasers is of few hundreds of microjoules per square centimeter (fluence) usually. In addition, the excitation wavelength’s light powering the device must be smaller than the microlasers size. When metallic nanoparticles are added to the microlaser, the excited surface plasmon couples with the emission spectrum of the laser dye. Therefore, the fluorescence of the dye can be enhanced by this coupling; this in turn, lowers the power threshold of the microlaser. Also, due to a plasmonic effect, it is possible to use smaller microlasers. In addition, a new sensing modality is enabled based on the variation of the optical modes’ amplitude with the change in the morphology’s microlaser. This opens a new avenue of low power consumption microlasers and photonics multiplexed biosensors.

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR

ASME IMECE

An Untethered Photonic Sensor for Wall Pressure Measurement

Optics letters

In this paper we study a novel untethered photonic wall pressure sensor that uses as sensing element a dome shaped micro-scale laser. Since the sensor does not require any optical or electrical cabling, it allows measurements where cabling tends to be problematic. The micro-laser is made by a mixture Trimethylolpropan Tri(3-mercaptopropionate), commercial name THIOCURE and Polyethylene (glycol) Diacrylate (PEGDA) mixed with a solution of rhodamine 6G. Two different volume ratios between the THIOCURE and the PEGDA are studied, since different ratios lead to different mechanical properties. In addition, two different sensor configurations are presented: (i) sensor coupled to a membrane, that allows differential wall pressure measurement and (ii) sensor without membrane that allows absolute wall pressure measurement. The sensitivity plots are presented in the paper for both sensor configurations and polymer ratios.

Towards a Photonic Sensor based Brain-Computer Interface (BCI)

(ISC)² Security Congress

Dye doped micro-droplets as a sensor for fluid dynamics applications

APS Meeting Abstracts

We report that micro-droplets can be used as sensors for fluid dynamics applications. These microscale droplets in liquid or solid form are made of polymers that are doped with dyes. These tiny droplets behave has micro-scale optical cavities that support optical modes. The optical modes are excited remotely using a Nd:YAG laser with pulse repetition of 10Hz. Here we report the fabrication of the droplets and their feasibility as untethered wall pressure and temperature sensors. When the droplets are exposed to variations of temperature or pressure their morphology (size and index of refraction) change. This in turn leads to a shift of the optical modes. The optical modes and therefore their shifts are monitored using an optical spectrometer.

Emission Spectrum Denoising Algorithm for Microlasers-Based Neurotransducers

OSA Advanced Photonics Congress

accepted

A Wireless Photonic Intraocular Pressure Sensor

ASME

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR FOR MULTIPLEXED BIOSENSING APPLICATIONS

ASME Journal of Engineering and Science in Medical Diagnostics and Therapy

Whispering gallery mode (WGM) resonators exhibit a high quality factor Q and a small mode volume; they usually exhibit high resolution when used as sensors. The light trapped inside a polymeric micro-cavity travels through total internal reflection generating the whispering gallery modes (WGMs). A laser or a lamp is used to power the microlaser by using a laser dye embedded within the resonator. The excited fluorescence of the dye couples with the optical modes. The optical modes (laser modes) are seen as sharp peaks in the emission spectrum with the aid of an optical interferometer. The position of these optical modes is sensitive to any change in the morphology of the resonator. However, the laser threshold of these microlasers is of few hundreds of microjoules per square centimeter (fluence) usually. In addition, the excitation wavelength’s light powering the device must be smaller than the microlasers size. When metallic nanoparticles are added to the microlaser, the excited surface plasmon couples with the emission spectrum of the laser dye. Therefore, the fluorescence of the dye can be enhanced by this coupling; this in turn, lowers the power threshold of the microlaser. Also, due to a plasmonic effect, it is possible to use smaller microlasers. In addition, a new sensing modality is enabled based on the variation of the optical modes’ amplitude with the change in the morphology’s microlaser. This opens a new avenue of low power consumption microlasers and photonics multiplexed biosensors.

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR

ASME IMECE

An Untethered Photonic Sensor for Wall Pressure Measurement

Optics letters

In this paper we study a novel untethered photonic wall pressure sensor that uses as sensing element a dome shaped micro-scale laser. Since the sensor does not require any optical or electrical cabling, it allows measurements where cabling tends to be problematic. The micro-laser is made by a mixture Trimethylolpropan Tri(3-mercaptopropionate), commercial name THIOCURE and Polyethylene (glycol) Diacrylate (PEGDA) mixed with a solution of rhodamine 6G. Two different volume ratios between the THIOCURE and the PEGDA are studied, since different ratios lead to different mechanical properties. In addition, two different sensor configurations are presented: (i) sensor coupled to a membrane, that allows differential wall pressure measurement and (ii) sensor without membrane that allows absolute wall pressure measurement. The sensitivity plots are presented in the paper for both sensor configurations and polymer ratios.

Towards a Photonic Sensor based Brain-Computer Interface (BCI)

(ISC)² Security Congress

Dye doped micro-droplets as a sensor for fluid dynamics applications

APS Meeting Abstracts

We report that micro-droplets can be used as sensors for fluid dynamics applications. These microscale droplets in liquid or solid form are made of polymers that are doped with dyes. These tiny droplets behave has micro-scale optical cavities that support optical modes. The optical modes are excited remotely using a Nd:YAG laser with pulse repetition of 10Hz. Here we report the fabrication of the droplets and their feasibility as untethered wall pressure and temperature sensors. When the droplets are exposed to variations of temperature or pressure their morphology (size and index of refraction) change. This in turn leads to a shift of the optical modes. The optical modes and therefore their shifts are monitored using an optical spectrometer.

Emission Spectrum Denoising Algorithm for Microlasers-Based Neurotransducers

OSA Advanced Photonics Congress

accepted

Temperature Compensation of Dye Doped Polymeric Microscale Lasers

Journal of Polymer Science Part B: Polymer Physics

Accepted 1 February 2017

A Wireless Photonic Intraocular Pressure Sensor

ASME

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR FOR MULTIPLEXED BIOSENSING APPLICATIONS

ASME Journal of Engineering and Science in Medical Diagnostics and Therapy

Whispering gallery mode (WGM) resonators exhibit a high quality factor Q and a small mode volume; they usually exhibit high resolution when used as sensors. The light trapped inside a polymeric micro-cavity travels through total internal reflection generating the whispering gallery modes (WGMs). A laser or a lamp is used to power the microlaser by using a laser dye embedded within the resonator. The excited fluorescence of the dye couples with the optical modes. The optical modes (laser modes) are seen as sharp peaks in the emission spectrum with the aid of an optical interferometer. The position of these optical modes is sensitive to any change in the morphology of the resonator. However, the laser threshold of these microlasers is of few hundreds of microjoules per square centimeter (fluence) usually. In addition, the excitation wavelength’s light powering the device must be smaller than the microlasers size. When metallic nanoparticles are added to the microlaser, the excited surface plasmon couples with the emission spectrum of the laser dye. Therefore, the fluorescence of the dye can be enhanced by this coupling; this in turn, lowers the power threshold of the microlaser. Also, due to a plasmonic effect, it is possible to use smaller microlasers. In addition, a new sensing modality is enabled based on the variation of the optical modes’ amplitude with the change in the morphology’s microlaser. This opens a new avenue of low power consumption microlasers and photonics multiplexed biosensors.

A NOVEL MICROLASER BASED PLASMONIC-POLYMER HYBRID RESONATOR

ASME IMECE

An Untethered Photonic Sensor for Wall Pressure Measurement

Optics letters

In this paper we study a novel untethered photonic wall pressure sensor that uses as sensing element a dome shaped micro-scale laser. Since the sensor does not require any optical or electrical cabling, it allows measurements where cabling tends to be problematic. The micro-laser is made by a mixture Trimethylolpropan Tri(3-mercaptopropionate), commercial name THIOCURE and Polyethylene (glycol) Diacrylate (PEGDA) mixed with a solution of rhodamine 6G. Two different volume ratios between the THIOCURE and the PEGDA are studied, since different ratios lead to different mechanical properties. In addition, two different sensor configurations are presented: (i) sensor coupled to a membrane, that allows differential wall pressure measurement and (ii) sensor without membrane that allows absolute wall pressure measurement. The sensitivity plots are presented in the paper for both sensor configurations and polymer ratios.

Towards a Photonic Sensor based Brain-Computer Interface (BCI)

(ISC)² Security Congress

Dye doped micro-droplets as a sensor for fluid dynamics applications

APS Meeting Abstracts

We report that micro-droplets can be used as sensors for fluid dynamics applications. These microscale droplets in liquid or solid form are made of polymers that are doped with dyes. These tiny droplets behave has micro-scale optical cavities that support optical modes. The optical modes are excited remotely using a Nd:YAG laser with pulse repetition of 10Hz. Here we report the fabrication of the droplets and their feasibility as untethered wall pressure and temperature sensors. When the droplets are exposed to variations of temperature or pressure their morphology (size and index of refraction) change. This in turn leads to a shift of the optical modes. The optical modes and therefore their shifts are monitored using an optical spectrometer.

Emission Spectrum Denoising Algorithm for Microlasers-Based Neurotransducers

OSA Advanced Photonics Congress

accepted

Temperature Compensation of Dye Doped Polymeric Microscale Lasers

Journal of Polymer Science Part B: Polymer Physics

Accepted 1 February 2017

ASME

member

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ASME

member

urn:li:fs_position:(ACoAAA1YrUEB9N3CMcLg3_eAamWWMYa0pc5XAww,1009097144)

ASME

member

urn:li:fs_position:(ACoAAA1YrUEB9N3CMcLg3_eAamWWMYa0pc5XAww,1009097144)

ASME

member

urn:li:fs_position:(ACoAAA1YrUEB9N3CMcLg3_eAamWWMYa0pc5XAww,1009097144)