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• 2015

  Photonic crystal enhanced microscopy

  Cunningham, B. T., Chen, W., Long, K. D., Zhuo, Y., Choi, J. S. & Harley, B. A., May 4 2015, CLEO: Applications and Technology, CLEO-AT 2015. Optical Society of America (OSA), AW4K.1. (CLEO: Applications and Technology, CLEO-AT 2015).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Photonic crystals
  • Hyperspectral imaging
  • Microscopic examination
  • Nanoparticles
  • Microscopes

• Planar Photonic Crystal Biosensor for Quantitative Label-Free Cell Attachment Microscopy

  Chen, W., Long, K. D., Kurniawan, J., Hung, M., Yu, H., Harley, B. A. & Cunningham, B. T., Nov 1 2015, In: Advanced Optical Materials. 3, 11, p. 1623-1632 10 p.

  Research output: Contribution to journal › Article › peer-review

  • Photonic crystals
  • Biosensors
  • bioinstrumentation
  • Microscopic examination
  • attachment

• Polarization controlled output of electrohydrodynamic jet printed quantum dot embedded photonic crystals for display applications

  See, G. G., Xu, L., Sutanto, E., Alleyne, A. G., Nuzzo, R. G. & Cunningham, B. T., Nov 9 2015, 2015 IEEE Photonics Conference, IPC 2015. Institute of Electrical and Electronics Engineers Inc., p. 180-181 2 p. 7323533. (2015 IEEE Photonics Conference, IPC 2015).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Photonic crystals
  • Semiconductor quantum dots
  • Electrohydrodynamics
  • Polarization
  • Display devices

• Polarized quantum dot emission in electrohydrodynamic jet printed photonic crystals

  See, G. G., Xu, L., Sutanto, E., Alleyne, A. G., Nuzzo, R. G. & Cunningham, B. T., Aug 3 2015, In: Applied Physics Letters. 107, 5, 051101.

  Research output: Contribution to journal › Article › peer-review

  • electrohydrodynamics
  • quantum dots
  • photonics
  • crystals
  • crystal structure

• Region specific enhancement of quantum dot emission using interleaved two-dimensional photonic crystals

  See, G. G., Xu, L., Naughton, M. S., Tang, T., Bonita, Y., Joo, J., Trefonas, P., Deshpande, K., Kenis, P. J. A., Nuzzo, R. G. & Cunningham, B. T., May 4 2015, CLEO: QELS - Fundamental Science, CLEO_QELS 2015. Optical Society of America (OSA), p. 1551p (CLEO: QELS - Fundamental Science, CLEO_QELS 2015).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Photonic crystals
  • Semiconductor quantum dots
  • quantum dots
  • photonics
  • augmentation

• Region specific enhancement of quantum dot emission using interleaved two-dimensional photonic crystals

  See, G. G., Xu, L., Naughton, M. S., Tang, T., Bonita, Y., Joo, J., Trefonas, P., Deshpande, K., Kenis, P. J. A., Nuzzo, R. G. & Cunningham, B. T., 2015, In: Applied Optics. 54, 9, p. 2302-2308 7 p.

  Research output: Contribution to journal › Article › peer-review

  • Photonic crystals
  • Semiconductor quantum dots
  • quantum dots
  • photonics
  • augmentation

• Region specific enhancement of quantum dot emission using interleaved two-dimensional photonic crystals

  See, G. G., Xu, L., Naughton, M. S., Tang, T., Bonita, Y., Joo, J., Trefonas, P., Deshpande, K., Kenis, P. J. A., Nuzzo, R. G. & Cunningham, B. T., Aug 10 2015, 2015 Conference on Lasers and Electro-Optics, CLEO 2015. Institute of Electrical and Electronics Engineers Inc., 7183009. (Conference on Lasers and Electro-Optics Europe - Technical Digest; vol. 2015-August).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Photonic crystals
  • Semiconductor quantum dots
  • quantum dots
  • photonics
  • augmentation

• Smartphone fluorescence spectroscopy

  Yu, H., Tan, Y. & Cunningham, B. T., Jan 1 2015, Frontiers in Biological Detection: From Nanosensors to Systems VII. Cunningham, B. T., Miller, B. L. & Fauchet, P. M. (eds.). SPIE, 93100B. (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; vol. 9310).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Fluorescence spectroscopy
  • nucleic acids
  • Fluorescence Spectrometry
  • Smartphone
  • Assays

• Smartphone-Imaged HIV-1 Reverse-Transcription Loop-Mediated Isothermal Amplification (RT-LAMP) on a Chip from Whole Blood

  Damhorst, G. L., Duarte-Guevara, C., Chen, W., Ghonge, T., Cunningham, B. T. & Bashir, R., Sep 1 2015, In: Engineering. 1, 3, p. 324-335 12 p.

  Research output: Contribution to journal › Article › peer-review

  • Viruses
  • Transcription
  • Amplification
  • Smartphones
  • Blood

• Smartphone spectroscopy: Three unique modalities for point-of-care testing

  Long, K. D., Yu, H. & Cunningham, B. T., Jan 1 2015, Next-Generation Spectroscopic Technologies VIII. Bannon, D. P., Crocombe, R. A. & Druy, M. A. (eds.). SPIE, 94820J. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 9482).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Spectroscopy
  • Modality
  • Smartphones
  • Assays
  • Mobile Devices

• Wafer-scale photonic and plasmonic crystal sensors

  George, M. C., Liu, J. N., Farhang, A., Williamson, B., Black, M., Wangensteen, T., Fraser, J., Petrova, R. & Cunningham, B. T., Jan 1 2015, NSTI: Advanced Manufacturing, Electronics and Microsystems - TechConnect Briefs 2015. Romanowicz, B. & Laudon, M. (eds.). Taylor and Francis Inc., p. 160-162 3 p. (NSTI: Advanced Materials - TechConnect Briefs 2015; vol. 4).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Optics and Photonics
  • Photonic crystals
  • Plasmonics
  • Surface plasmon resonance
  • Crystals

• Wafer-scale plasmonic and photonic crystal sensors

  George, M. C., Liu, J. N., Farhang, A., Williamson, B., Black, M., Wangensteen, T., Fraser, J., Petrova, R. & Cunningham, B. T., Jan 1 2015, Plasmonics: Metallic Nanostructures and Their Optical Properties XIII. Tsai, D. P. & Boardman, A. D. (eds.). SPIE, 95471F. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 9547).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Plasmonics
  • Photonic Crystal
  • Photonic crystals
  • Wafer
  • Sensor
• 2013

  A self-referencing biosensor based upon a dual-mode external cavity laser

  Zhang, M., Ge, C., Lu, M., Zhang, Z. & Cunningham, B. T., Jan 1 2013, 2013 Conference on Lasers and Electro-Optics, CLEO 2013. IEEE Computer Society, 6833168. (2013 Conference on Lasers and Electro-Optics, CLEO 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Laser resonators
  • Laser modes
  • Biosensors
  • Labels
  • Sensors

• A self-referencing biosensor based upon a dual-mode external cavity laser

  Zhang, M., Ge, C., Lu, M., Zhang, Z. & Cunningham, B. T., Nov 18 2013, CLEO: Science and Innovations, CLEO_SI 2013. (CLEO: Science and Innovations, CLEO_SI 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Laser resonators
  • Laser modes
  • Biosensors
  • bioinstrumentation
  • laser cavities

• A self-referencing biosensor based upon a dual-mode external cavity laser

  Zhang, M., Ge, C., Lu, M., Zhang, Z. & Cunningham, B. T., May 27 2013, In: Applied Physics Letters. 102, 21, 213701.

  Research output: Contribution to journal › Article › peer-review

  • bioinstrumentation
  • laser cavities
  • photonics
  • reflectors
  • sensors

• Colorimetric Plasmon Resonance Imaging Using Nano Lycurgus Cup Arrays

  Gartia, M. R., Hsiao, A., Pokhriyal, A., Seo, S., Kulsharova, G., Cunningham, B. T., Bond, T. C. & Liu, G. L., Jan 2013, In: Advanced Optical Materials. 1, 1, p. 68-76 9 p.

  Research output: Contribution to journal › Article › peer-review

  • Plasmons
  • Color photography
  • color photography
  • plasmons
  • Imaging techniques

• Colorimetrics: Colorimetric Plasmon Resonance Imaging Using Nano Lycurgus Cup Arrays (Advanced Optical Materials 1/2013)

  Gartia, M. R., Hsiao, A., Pokhriyal, A., Seo, S., Kulsharova, G., Cunningham, B. T., Bond, T. C. & Liu, G. L., Jan 1 2013, In: Advanced Optical Materials. 1, 1, p. 1 1 p.

  Research output: Contribution to journal › Article › peer-review

  • Plasmons
  • color photography
  • Optical materials
  • microfluidic devices
  • optical materials

• Distributed feedback laser biosensor noise reduction

  Tan, Y., Chu, A., Lu, M. & Cunningham, B. T., 2013, In: IEEE Sensors Journal. 13, 5, p. 1972-1978 7 p., 6449276.

  Research output: Contribution to journal › Article › peer-review

  • Distributed feedback lasers
  • Biosensors
  • distributed feedback lasers
  • bioinstrumentation
  • Noise abatement

• Enhanced fluorescence emission using a photonic crystal coupled to an optical cavity

  Pokhriyal, A., Lu, M., Chaudhery, V., George, S. & Cunningham, B. T., Nov 18 2013, CLEO: Science and Innovations, CLEO_SI 2013. p. CM4O.3 (CLEO: Science and Innovations, CLEO_SI 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Photonic crystals
  • Fluorescence
  • fluorescence
  • photonics
  • cavities

• Enhanced fluorescence emission using a photonic crystal coupled to an optical cavity

  Pokhriyal, A., Lu, M., Chaudhery, V., George, S. & Cunningham, B. T., Jun 3 2013, In: Applied Physics Letters. 102, 22, 221114.

  Research output: Contribution to journal › Article › peer-review

  • fluorescence
  • photonics
  • cavities
  • signal to noise ratios
  • crystals

• Enhanced fluorescence emission using a photonic crystal coupled to an optical cavity

  Pokhriyal, A., Lu, M., Chaudhery, V., George, S. & Cunningham, B. T., Jan 1 2013, 2013 Conference on Lasers and Electro-Optics, CLEO 2013. IEEE Computer Society, 6833303. (2013 Conference on Lasers and Electro-Optics, CLEO 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Photonic crystals
  • Fluorescence
  • Fluorophores
  • Polypeptides
  • Biomolecules

• External cavity laser biosensor

  Zhang, M., Ge, C., Lu, M., Wagner, C. J., Zheng, J., Pokhriyal, A., Eden, J. G. & Cunningham, B. T., 2013, Laser Science, LS 2013. Optical Society of America (OSA), (Optics InfoBase Conference Papers).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Laser resonators
  • Laser modes
  • Biomolecules
  • Biosensors
  • bioinstrumentation

• External cavity laser biosensor

  Ge, C., Lu, M., George, S., Flood, T. A., Wagner, C., Zheng, J., Pokhriyal, A., Eden, J. G., Hergenrother, P. J. & Cunningham, B. T., Apr 7 2013, In: Lab on a chip. 13, 7, p. 1247-1256 10 p.

  Research output: Contribution to journal › Article › peer-review

  • Laser resonators
  • Optics and Photonics
  • Photonic crystals
  • Biosensing Techniques
  • Biosensors

• External cavity laser biosensor

  Zhang, M., Ge, C., Lu, M., Wagner, C. J., Zheng, J., Pokhriyal, A., Eden, J. G. & Cunningham, B. T., Jan 1 2013, Laser Science, LS 2013. Optical Society of America, (Optics InfoBase Conference Papers).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Laser resonators
  • Laser modes
  • Biomolecules
  • Biosensors
  • bioinstrumentation

• Label-free biodetection using a smartphone

  Gallegos, D., Long, K. D., Yu, H., Clark, P. P., Lin, Y., George, S., Nath, P. & Cunningham, B. T., Jun 7 2013, In: Lab on a chip. 13, 11, p. 2124-2132 9 p.

  Research output: Contribution to journal › Article › peer-review

  • Optics and Photonics
  • Photonic crystals
  • Smartphone
  • Biosensing Techniques
  • Biosensors

• Large infrared absorptance of bimaterial microcantilevers based on silicon high contrast grating

  Kwon, B., Seong, M., Liu, J. N., Rosenberger, M. R., Schulmerich, M. V., Bhargava, R., Cunningham, B. T. & King, W. P., Oct 21 2013, In: Journal of Applied Physics. 114, 15, 153511.

  Research output: Contribution to journal › Article › peer-review

  • absorptance
  • gratings
  • silicon
  • bandwidth
  • sensitivity

• Nanostructured surfaces and detection instrumentation for photonic crystal enhanced fluorescence

  Chaudhery, V., George, S., Lu, M., Pokhriyal, A. & Cunningham, B. T., May 2013, In: Sensors (Switzerland). 13, 5, p. 5561-5584 24 p.

  Research output: Contribution to journal › Review article › peer-review

  • Optics and Photonics
  • Photonic crystals
  • Fluorescence
  • Photons
  • fluorescence

• Photonic crystal biodetection using a portable smartphone system

  Long, K. D., Yu, H. & Cunningham, B. T., Dec 1 2013, 2013 IEEE Photonics Conference, IPC 2013. p. 159-160 2 p. 6656483. (2013 IEEE Photonics Conference, IPC 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Photonic crystals
  • Biosensors
  • Assays
  • bioinstrumentation
  • Smartphones

• Photonic crystal enhanced microscopy for imaging of live cell adhesion

  Chen, W., Long, K. D., Lu, M., Chaudhery, V., Yu, H., Choi, J. S., Polans, J., Zhuo, Y., Harley, B. A. C. & Cunningham, B. T., Oct 21 2013, In: Analyst. 138, 20, p. 5886-5894 9 p.

  Research output: Contribution to journal › Article › peer-review

  • Optics and Photonics
  • Photonic crystals
  • Cell adhesion
  • Microscopic examination
  • adhesion

• Photonic crystal enhanced microscopy for imaging of live cell adhesion

  Chen, W., Lu, M., Long, K. D., Chaudhery, V., Yu, H., Polans, J., Choi, J. S. & Cunningham, B. T., 2013, Frontiers in Optics, FIO 2013. Optical Society of America (OSA), (Optics InfoBase Conference Papers).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Photonic crystals
  • Cell death
  • Cell adhesion
  • Bond strength (materials)
  • Microscopic examination

• Point-of-care detection and real-time monitoring of intravenously delivered drugs via tubing with an integrated SERS sensor

  Wu, H. Y. & Cunningham, B. T., Jan 1 2013, Laser Science, LS 2013. Optical Society of America, (Optics InfoBase Conference Papers).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Tubing
  • drugs
  • Plasmonics
  • sensors
  • plastic flow

• Point-of-care detection and real-time monitoring of intravenously delivered drugs via tubing with an integrated SERS sensor

  Wu, H. Y. & Cunningham, B. T., Jan 1 2013, Laser Science, LS 2013. Optical Society of America (OSA), (Optics InfoBase Conference Papers).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Tubing
  • drugs
  • Plasmonics
  • sensors
  • plastic flow

• Sensitive detection of protein and miRNA cancer biomarkers using silicon-based photonic crystals and a resonance coupling laser scanning platform

  George, S., Chaudhery, V., Lu, M., Takagi, M., Amro, N., Pokhriyal, A., Tan, Y., Ferreira, P. & Cunningham, B. T., Oct 21 2013, In: Lab on a chip. 13, 20, p. 4053-4064 12 p.

  Research output: Contribution to journal › Article › peer-review

  • Tumor Biomarkers
  • Optics and Photonics
  • Photonic crystals
  • Silicon
  • Proteins
• 2012

  Angle-scanning photonic crystal enhanced fluorescence microscopy

  Chaudhery, V., Lu, M., Pokhriyal, A., Schulz, S. C. & Cunningham, B. T., 2012, In: IEEE Sensors Journal. 12, 5, p. 1272-1279 8 p., 6026215.

  Research output: Contribution to journal › Article › peer-review

  • Photonic crystals
  • Fluorescence microscopy
  • Fluorescence
  • Scanning
  • fluorescence

• Bidirectional scatter measurements of a guidedmode resonant filter photonic crystal structure

  Marciniak, M. A., Sellers, S. R., Lamott, R. B. & Cunningham, B. T., Dec 3 2012, In: Optics Express. 20, 25, p. 27242-27252 11 p.

  Research output: Contribution to journal › Article › peer-review

  • crystal structure
  • filters
  • photonics
  • incidence
  • diffraction

• Biochemical sensor tubing for point-of-care monitoring of intravenous drugs and metabolites

  Choi, C. J., Wu, H. Y., George, S., Weyhenmeyer, J. & Cunningham, B. T., Feb 7 2012, In: Lab on a chip. 12, 3, p. 574-581 8 p.

  Research output: Contribution to journal › Article › peer-review

  • Metabolites
  • Raman Spectrum Analysis
  • Drug Monitoring
  • Point-of-Care Systems
  • Tubing

• Detection of cancer biomarkers using fluorescence enhanced by silicon-based photonic crystals and bandgap-matching laser scanner

  George, S., Chaudhery, V., Lu, M. & Cunningham, B. T., 2012, Laser Science, LS 2012. Optical Society of America (OSA), (Laser Science, LS 2012).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Tumor Biomarkers
  • Photonic crystals
  • Silicon
  • Fluorescence
  • Energy gap

• Distributed feedback laser biosensor noise reduction

  Tan, Y., Chu, A. & Cunningham, B. T., Dec 1 2012, 2012 IEEE Photonics Conference, IPC 2012. p. 210-211 2 p. 6358565. (2012 IEEE Photonics Conference, IPC 2012).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Distributed feedback lasers
  • Biosensors
  • Noise abatement
  • Wavelength
  • Signal processing

• External cavity laser biosensor

  Ge, C., Lu, M., George, S., Wagner, C. J., Zheng, J., Pokhriyal, A., Eden, J. G. & Cunningham, B. T., Dec 1 2012, 2012 IEEE Photonics Conference, IPC 2012. p. 151-152 2 p. 6358534. (2012 IEEE Photonics Conference, IPC 2012).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Laser resonators
  • Biosensors
  • Bandwidth

• Foreword

  Cunningham, B. T., Dec 1 2012, In: Photonic Bandgap Structures: Novel Technological Platforms for Physical, Chemical and Biological Sensing.

  Research output: Contribution to journal › Article › peer-review

• Line-scanning detection instrument for photonic crystal enhanced fluorescence

  Chaudhery, V., Lu, M., Huang, C. S., Polans, J., Tan, R., Zangar, R. C. & Cunningham, B. T., Jul 1 2012, In: Optics Letters. 37, 13, p. 2565-2567 3 p.

  Research output: Contribution to journal › Article › peer-review

  • fluorescence
  • photonics
  • scanning
  • crystal surfaces
  • crystals

• Multiplexed cancer biomarker detection using quartz-based photonic crystal surfaces

  Huang, C. S., Chaudhery, V., Pokhriyal, A., George, S., Polans, J., Lu, M., Tan, R., Zangar, R. C. & Cunningham, B. T., Jan 17 2012, In: Analytical chemistry. 84, 2, p. 1126-1133 8 p.

  Research output: Contribution to journal › Article › peer-review

  • Photonic crystals
  • Quartz
  • Biomarkers
  • Fluorescence
  • Tumor Biomarkers

• Photonic crystal enhanced fluorescence for early breast cancer biomarker detection

  Cunningham, B. T. & Zangar, R. C., Aug 2012, In: Journal of Biophotonics. 5, 8-9, p. 617-628 12 p.

  Research output: Contribution to journal › Review article › peer-review

  • Tumor Biomarkers
  • Optics and Photonics
  • Photonic crystals
  • biomarkers
  • Fluorescence

• Photonic crystals: A versatile platform for optics-based biological detection

  Cunningham, B. T., Mar 19 2012, Silicon Photonics VII. 826609. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 8266).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Photonic Crystal
  • Photonic crystals
  • Optics
  • Wavelength
  • platforms

• Plasmonic nanogap-enhanced raman scattering using a resonant nanodome array

  Wu, H. Y., Choi, C. J. & Cunningham, B. T., 2012, CLEO: Science and Innovations, CLEO_SI 2012.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Plasmonics
  • Raman scattering
  • Metabolites
  • Optical properties
  • Substrates

• Plasmonic nanogap-enhanced raman scattering using a resonant nanodome array

  Wu, H. Y., Choi, C. J. & Cunningham, B. T., Sep 24 2012, In: Small. 8, 18, p. 2878-2885 8 p.

  Research output: Contribution to journal › Article › peer-review

  • Plasmonics
  • Raman scattering
  • Raman Spectrum Analysis
  • Surface plasmon resonance
  • Surface Plasmon Resonance

• Plasmonic nanogap-enhanced Raman scattering using a resonant nanodome array

  Wu, H. Y., Choi, C. J. & Cunningham, B. T., Dec 6 2012, 2012 Conference on Lasers and Electro-Optics, CLEO 2012. 6325721. (2012 Conference on Lasers and Electro-Optics, CLEO 2012).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Plasmonics
  • Raman scattering
  • Metabolites
  • Optical properties
  • Substrates

• Plastic-based distributed feedback laser biosensors in microplate format

  Tan, Y., Ge, C., Chu, A., Lu, M., Goldshlag, W., Huang, C. S., Pokhriyal, A., George, S. & Cunningham, B. T., 2012, In: IEEE Sensors Journal. 12, 5, p. 1174-1180 7 p., 5976995.

  Research output: Contribution to journal › Article › peer-review

  • Distributed feedback lasers
  • dipping
  • Biosensors
  • distributed feedback lasers
  • bioinstrumentation

• Quartz-based photonic crystal surfaces for multiplexed cancer biomarker detection

  Huang, C. S., Chaudhery, V., Polans, J., Lu, M., Cunningham, B. T., Pokhriyal, A., George, S. & Zangar, R. C., Dec 1 2012, IEEE SENSORS 2012 - Proceedings. 6411036. (Proceedings of IEEE Sensors).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Tumor Biomarkers
  • Photonic crystals
  • Antibodies
  • Quartz
  • Labels

• Spectral characteristics of single and coupled microresonator lasers comprising a replica-molded Bragg grating and dye-doped polymer

  Zheng, J., Lu, M., Wagner, C. J., Cunningham, B. T. & Eden, J. G., Feb 1 2012, In: Journal of the Optical Society of America B: Optical Physics. 29, 2, p. 209-214 6 p.

  Research output: Contribution to journal › Article › peer-review

  • replicas
  • Bragg gratings
  • dyes
  • rings
  • polymers