Rajesh Menon portrait
  • USTAR Assistant Professor, Elect & Computer Engineering
  • USTAR Associate Professor, Elect & Computer Engineering
  • Adjunct Associate Professor, Bioengineering
  • Associate Professor, Elect & Computer Engineering
801-585-1058
http://lons.utah.edu

Research Statement

 

ABSORBANCE MODULATION OPTICAL LITHOGRAPHY (AMOL)

Absorbance modulation utilizes a thin photochromic layer that is reversibly rendered transparent by illumination at wavelength, l1 and opaque by illumination at a different wavelength, l2 (see figure). When this layer is exposed to a focused bright spot at l1 and simultaneously to a focused node at l2, the ensuing photochemical equilibrium results in a sub-wavelength transparent region in the vicinity of the node. Photons at l1 penetrate this region forming an optical nanoscale probe. The lateral size of this probe is not limited by diffraction, but by material parameters and the ratio of the intensities at the two wavelengths. In other words, optical near-fields are generated from afar.

 

PATTERNING VIA OPTICAL SATURABLE TRANSITIONS (POST)

Absorbance modulation is limited to patterning ultra-thin photoresist layers due to the evanescent nature of the optical near-field. This constraint is overcome by an alternative approach that exploits unique combinations of spectrally-selective reversible and irreversible photochemical transitions. We refer to this approach as Patterning via Optical-Saturable Transitions (POST). POST has the potential to achieve single-molecule spatial resolution with long-wavelength photons.

OPTICAL NANOSCOPY

Light microscopes are ubiquitous, from the life sciences to the semiconductor industry. Ordinarily, diffraction limits the resolution of such microscopes to ~200nm. Electron microscopy, although capable of nanoscale resolution, is incompatible with living systems, and can even damage some inorganic materials. A significant number of fundamental questions in biology remain unanswered because of an inability to see at the nanoscale without damage. We are pursuing absorbance-modulation imaging as a technique to nanoscale microscopy or nanoscopy.

ULTRA-HIGH EFFICIENCY SOLAR ENERGY VIA A NANOSTRUCTURED POLYCHROMATIC CONCENTRATOR

Nanotechnology will almost certainly play a leading role in solving the current energy and environmental crises. We are applyng our expertise in optics and nanofabrication to develop solar concentrators that separate and concentrate the solar spectrum to achieve overall photovoltaic energy conversion efficiencies over 50%. By selecting the optimal spectral band to illuminate a given solar cell, it is possible to overcome "hot-carrier" losses and transparency losses, both of which account for over 60% of the total energy loss.

Presentations

  • Please see complete list here: https://nanoptics.wordpress.com/conferences-talks/. Invited Talk/Keynote, Presented, 01/01/2015.
    https://nanoptics.wordpress.com/conferences-talks/
  • P. Wang, B. Shen and R. Menon, “Optimization of generalized nanostructures for light trapping beyond the ergodic limit,” OSA Topical meeting on Nanostructures and advanced materials for photovoltaics, Tucson, AZ. Nov. 3-6, 2013. Conference Paper, Refereed, Accepted, 11/2013.
  • P. Wang, J A. Dominguez-Caballero, D. J. Friedman and R. Menon, “Multi-bandgap high- efficiency photovoltaics enabled by broadband diffractive optics,” OSA Topical meeting on Optics for Solar Energy, Tucson, AZ. Nov. 3-6, 2013. Conference Paper, Refereed, Accepted, 11/2013.
  • P. Cantu, T. L. Andrew and R. Menon, “Diffraction unlimited nanopatterning via optical saturable transformations,” Nano Utah, Salt Lake City UT Oct. 18. 2013. Conference Paper, Refereed, Accepted, 10/2013.
  • P. Wang, B. Shen and R. Menon, “Optimization of nanostructures for enhanced light-trapping in thin-film photovoltaics,” OSA Frontiers in Optics, Orlando, FL Oct. 6-10, 2013. Conference Paper, Refereed, Accepted, 10/2013.
  • A. Majumder, F. Masid, T. L. Andrew and R. Menon, “Diffraction unlimited optical maskless lithography using absorbance modulation,” Nano Utah, Salt Lake City UT Oct. 18. 2013. Conference Paper, Refereed, Accepted, 10/2013.
  • P. Wang, B. Shen and R. Menon, “Optimization of nanostructures for enhanced light-trapping in thin-film photovoltaics,” OSA Frontiers in Optics, Orlando, FL Oct. 6-10, 2013. Conference Paper, Refereed, Accepted, 10/2013.
  • R. Menon, “Reaching beyond the far-field diffraction limit at low light powers,” IEEE Lithography workshop, La Quinta, CA Nov. 10-14, 2013 (invited). Invited Talk/Keynote, Accepted, 10/2013.
  • P. Cantu, T. L. Andrew and R. Menon, “Sub-diffraction-limited nanopatterning via Optical Saturable Transformations,” 39th International Conference on Micro and Nano Engineering, London, UK 16-19 September, 2013. Conference Paper, Refereed, Accepted, 09/2013.
  • R. Castagna, G. Pariani, F. Masid, P. Cantu, R. Menon, A. Bianco and C. Bertarelli, “Photochromic tunable filters for subdiffraction lithography,” International symposium on photochromism, Berlin, Germany Sept. 23-26, 2013. Conference Paper, Refereed, Accepted, 09/2013.
  • P. Cantu, F. Masid, A. Majumder, T. L. Andrew and R. Menon, “Optical nanopatterning beyond the far-field diffraction limit via wavelength-selective photochemistry,” Enabling nanofabrication for rapid innovation workshop, Napa, CA August 18-21, 2013 (invited poster). Invited Talk/Keynote, Accepted, 08/2013.
  • R. Menon, “Circumventing the far-field diffraction limit in optical nanopatterning,” OSA Topical meeting on Imaging Systems and Applications. Arlington, VA June 24-28, 2013 (invited). Invited Talk/Keynote, Accepted, 06/2013.
  • P. Cantu, T. L. Andrew and R. Menon, “Patterning via optical saturable transformations via solubility rate difference, “EIPBN Conference, Nashville, TN May 29-31, 2013. Conference Paper, Refereed, Accepted, 05/2013.
  • F. Masid, T. L. Andrew and R. Menon, “Optical patterning of features with spacing below the far-field diffraction limit using absorbance modulation,” EIPBN Conference, Nashville, TN May 29-31, 2013. Conference Paper, Refereed, Accepted, 05/2013.
  • A. Majumder, T. L. Andrew and R. Menon, “Maskless subwavelength nanopatterning using vortex phase plates and absorbance modulation,” EIPBN Conference, Nashville, TN May 29-31, 2013. Conference Paper, Refereed, Accepted, 05/2013.
  • P. Wang and R. Menon, “Optical microlithography on oblique surfaces via a novel diffractive phase mask,” EIPBN Conference, Nashville, TN May 29-31, 2013. Conference Paper, Refereed, Accepted, 05/2013.
  • R. Menon, “Optical nanopatterning and nanoscale imaging: going beyond the far-field diffraction barrier,” VIII TOPFOT (Workshop in Optics and Photophysics), May 21, 2013. Buenos Aires, Argentina (invited). Invited Talk/Keynote, Accepted, 05/2013.
  • R. Menon, Short course on super-resolution nanofabrication and imaging, Fotónica y Óptica Aplicadas a la Nanotecnología, May 20, 2013. Buenos Aires, Argentina (invited). (OSA Traveling lecturer program). Invited Talk/Keynote, Accepted, 05/2013.
  • R. Menon, “Deep subwavelength optical nanolithography: going beyond the far-field diffraction limit,” IEEE workshop on microelectronics and electron devices, Boise, ID April 11- 12, 2013 (invited). Invited Talk/Keynote, Accepted, 04/2013.
  • R. Menon, “Deep subwavelength optical nanolithography: going beyond the far-field diffraction limit,” IEEE workshop on microelectronics and electron devices, Boise, ID April 11- 12, 2013 (invited). Invited Talk/Keynote, Accepted, 04/2013.
  • R. Menon, “Nanopatterning beyond the far-field Diffraction Limit” Photonics West, Feb. 4, 2013, San Francisco. (invited). Invited Talk/Keynote, Accepted, 02/2013.
  • R. Menon, "Nanotechnology: Challenges and potential to change our world," Forum for questioning minds, Salt Lake City Public Library Lecture, November 13, 2011 (invited). Invited Talk/Keynote, Presented, 11/2011.
  • P. Cantu, N. Brimhall, T. L. Andrew and R. Menon, "Sub-diffraction limited patterning via optical-saturable transformations," OSA Annual Meeting, San Jose, CA, October 27, 2011. Conference Paper, Refereed, Presented, 10/2011.
  • R. Menon, “Multi-wavelength diffractive optics for imaging, nanopatterning and non-imaging applications,” Applied Mathematics Seminar, University of Utah, October 24, 2011 (invited). Invited Talk/Keynote, Presented, 10/2011.
  • P. Cantu, N. Brimhall and R. Menon, “Diffraction-unlimited nanopatterning with optical saturable transofrmations," NanoUtah, Salt Lake City, UT, October 2011. Invited Talk/Keynote, Presented, 10/2011.
  • F. Masid and R. Menon, “Technique for reusing photochromic molecules in absorbance modulation optical lithography,” NanoUtah, Salt Lake City, UT, October 2011. Invited Talk/Keynote, Presented, 10/2011.
  • R. Menon, “Multi-wavelength diffractive optics for imaging, nanopatterning and non-imaging applications,” Applied Mathematics Seminar, University of Utah, October 24, 2011 (invited). Invited Talk/Keynote, Presented, 10/2011.
  • R. Menon, “Absorbance modulation: A path towards low-cost, high-throughput nanolithography,” DARPA GRATE PI Meeting, San Francisco, CA, September 26, 2011 (invited). Invited Talk/Keynote, Presented, 09/2011.
  • R. Menon, “Patterning and imaging beyond the far-field diffraction limit,” Pacific-Rim CLEO, Sydney, Australia, August 2011 (invited). Invited Talk/Keynote, Presented, 08/2011.
  • R. Menon, Pan-American Advanced Studies Institute (PASI) on “Frontiers in Imaging Science,” Universidad Nacional de Colombia, Bogota, June 2011 (invited). Invited Talk/Keynote, Presented, 06/2011.
  • R. Menon, “Breaking the far-field diffraction barrier with photochemistry,” University of Miami, Department of Chemistry seminar, March 12, 2011 (invited). Invited Talk/Keynote, Other, 03/2011.
  • G. Kim and R. Menon, National Conference on Undergraduate Reesarch, Ithaca, NY, March, 2011. Other, Presented, 03/2011.
  • R. Menon, “Reading and writing at the nanoscale via novel photochemistry,” Politecnico di Milano Seminar, Milan, Italy, February 14, 2011. (invited). Invited Talk/Keynote, Accepted, 02/2011.
  • R. Menon, “Energy for sustainability: Challenges for future engineers,” University of Nevada System Board of Regents meeting, Las Vegas, NV, December 4, 2010. (invited). Other, Accepted, 12/2010.
  • N. Brimall, T. L. Andrews, R. V. Manthena and R. Menon, “Novel photochemistry enables deep sub-wavelength optical nanolithography,” IEEE Lithography workshop, Kauai, HI, November 7-11, 2010. (invited poster). Other, Accepted, 11/2010.
  • N. Brimall, T. L. Andrews, R. V. Manthena and R. Menon, “On breaking the Abbé diffraction limit in optical nanopatterning,” OSA Annual Meeting, Rochester, NY, October 28, 2010.(invited). Invited Talk/Keynote, Accepted, 10/2010.
  • R. Menon, “On breaking the Abbé diffraction limit in optical nanopatterning and nanoscopy,” Ernst Abbe Lecture, Annual Meeting of European Optical Society, Paris, France, October 28, 2010. (invited). Invited Talk/Keynote, Accepted, 10/2010.
  • N. Brimhall, T. L. Andrew and R. Menon, "Sub-wavelength optical patterning via optical-saturable transformations," EIPBN Conference, June 1-4, 2010, Anchorage, AK. Other, Presented, 06/01/2010.
  • R. V. Manthena, M. Diwekar, N. Brimhall, T. L. Andrew and R. Menon, "Deep sub-wavelength patterning via absorbance modulation," EIPBN Conference, June 1-4, 2010, Anchorage, AK (poster). Other, Presented, 06/01/2010.
  • R. Menon, "Absorbance modulation: an approach to surpassing the diffraction barrier," MIT Optics and Quantum Electronics Seminar, March 3, 2010, Cambridge, MA (invited). Invited Talk/Keynote, Presented, 03/03/2010.
  • R. Menon, "On breaking the far-field diffraction barrier in optical nanopatterning and nanoscopy," Florida Atlantic University Physics Colloqium, February 26, 2010, Boca Raton, FL (invited). Invited Talk/Keynote, Presented, 02/26/2010.
  • 23. R. Menon, “Breaking the far-field diffraction barrier: Optical nanopatterning and nanoscopy enabled by chemistry,” University of Utah Analytical/Physical Chemistry Seminar, October 26, 2009 (invited). Invited Talk/Keynote, Other, 10/26/2009.
  • 21. R. Menon, OSA Annual Meeting, October 11-15, 2009, San Jose, CA. Conference Paper, Refereed, Other, 10/15/2009.
  • 22. R. Menon, "Patterning and Imaging Nanostructures with Light," NanoUtah 2009, October 15-16, Salt Lake City, UT (invited). Invited Talk/Keynote, Other, 10/15/2009.
  • 20. R. Menon, ASME Nanomanufacturing Panel, Sep. 2, 2009, San Diego, CA (invited). Invited Talk/Keynote, Other, 09/02/2009.

Research Groups

  • Aprartim Mazumdar, Graduate Student. 09/2011 - present.
  • Peng-Wang, Graduate Student. 09/2011 - present.
  • Farhana Masid, Graduate Student. 06/2011 - present.
  • Cantu, Precious, Graduate Student. 09/2010 - present.
  • MANTHENA,RAJAKUMAR VARMA, Graduate Student. 07/01/2010 - 03/2011.
  • BRIMHALL,NICOLE, Postdoc. 07/01/2010 - 07/2011.
  • DIWEKAR,MOHIT DHANANJAY, Postdoc. 07/01/2010 - 01/2011.
  • KIM,GANG HUN , Undergraduate Student. 05/01/2010 - 11/2011.
  • KLEINSCHMIDT,JASON EDWARD, Undergraduate Student. 10/01/2009 - 06/2011.
  • SATHYAPALAN,AMARCHAND, Postdoc. 09/01/2009 - 07/31/2010.

Geographical Regions of Interest

  • Australia and New Zealand
  • France
  • India
  • Poland

Publications

  • Please see the website: https://nanoptics.wordpress.com/publications/ for up to date list of all publications. Published, 12/01/2016.
  • Shen B, Polson R & Menon R (2015). Metamaterial-waveguide bends with effective bend radius < λ0/2. Optics letters. Vol. 40, 5750-3. Published, 12/01/2015.
  • Aytug, Tolga, Lupini, Andrew R., Jellison, Gerald E., Joshi, Pooran C., Ivanov, Ilia H., Liu, Tao, Wang, Peng, Menon, Rajesh, Trejo, Rosa M., Lara-Curzio, Edgar, Hunter, Scott R., Simpson, John T., Paranthaman, M. Parans & Christen, David K. (2015). Monolithic graded-refractive-index glass-based antireflective coatings: broadband/omnidirectional light harvesting and self-cleaning characteristics. Royal Society of Chemistry (RSC). Vol. 3(21), 5440-5449. Published, 2015.
  • Wang, Peng & Menon, Rajesh (2015). Optical microlithography on oblique and multiplane surfaces using diffractive phase masks. SPIE-Intl Soc Optical Eng. Vol. 14(2), 023507. Published, 2015.
  • Meiri, Amihai, Ebeling, Carl, Martineau, Jason, Zalevsky, Zeev, Gerton, Jordan & Menon, Rajesh (2015). Sub-Nanometer Particle Tracking by Point-Spread-Function Spatial Modulation. Optical Society of America (OSA). , NM2C.3. Published, 2015.
  • Majumder, Apratim, Masid, Farhana, Pollock, Benjamin, Andrew, Trisha & Menon, Rajesh (2015). Super-resolution Optical Nanolithography: Beyond the far-field diffraction limit. Optical Society of America (OSA). , STh3M.6. Published, 2015.
  • Shen, Bing, Wang, Peng, Polson, Randy & Menon, Rajesh (2015). An integrated-nanophotonics polarization beamsplitter with 2.4 × 2.4 μm2 footprint. Nature Publishing Group. Vol. 9(6), 378-382. Published, 2015.
  • Majumder, Apratim, Masid, Farhana, Pollock, Benjamin, Andrew, Trisha L. & Menon, Rajesh (2015). Barrier-free absorbance modulation for super-resolution optical lithography. Optical Society of America (OSA). Vol. 23(9), 12244. Published, 2015.
  • Kim, Ganghun, Nagarajan, Naveen, Meiri, Amihai, Merrill, Sean, Capecchi, Mario, Jorgensen, Erik & Menon, Rajesh (2015). A cannula-based computational fluorescence microscope for neuronal imaging. Optical Society of America (OSA). , STu2K.7. Published, 2015.
  • Mohammed, Nabil, Wang, Peng, Friedman, Daniel, Ramanathan, Kannan, Mansfield, Lorelle & Menon, Rajesh (2015). Microphotonic spectrum-splitting & concentration for high-efficiency photovoltaic. Optical Society of America (OSA). , ATu2J.2. Published, 2015.
  • Shen, Bing, Polson, Randy & Menon, Rajesh (2015). Integrated digital metamaterials enables ultra-compact optical diodes. Optical Society of America (OSA). Vol. 23(8), 10847. Published, 2015.
  • Ebeling, Carl G., Meiri, Amihai, Martineau, Jason, Zalevsky, Zeev, Gerton, Jordan M. & Menon, Rajesh (2015). Increased localization precision by interference fringe analysis. Royal Society of Chemistry (RSC). Published, 2015.
  • Meiri, Amihai, Ebeling, Carl, Martineau, Jason, Zalevsky, Zeev, Gerton, Jordan & Menon, Rajesh (2015). Improvement in In-Plane Localization Precision of Nanoparticles Using Interference Analysis. Optical Society of America (OSA). , JW2A.88. Published, 2015.
  • Kim, Ganghun, Nagarajan, Naveen & Menon, Rajesh (2015). Fluorescent Microscope in a Needle. Optical Society of America (OSA). , NM4C.2. Published, 2015.
  • Shen, Bing, Wang, Peng, Polson, Randy C. & Menon, Rajesh (2015). Efficient and ultra-compact computational metamaterials for integrated photonics and free-space applications. Optical Society of America (OSA). , JTu5A.46. Published, 2015.
  • Shen B, Polson R & Menon R (2015). Broadband asymmetric light transmission via all-dielectric digital metasurfaces. Optics express. Vol. 23, 20961-70. Published, 09/01/2015.
  • Shen B, Polson R & Menon R (2015). Integrated digital metamaterials enables ultra-compact optical diodes. Optics express. Vol. 23, 10847-55. Published, 05/01/2015.
  • P. Cantu, T. L. Andrew and R. Menon, “Nanopatterning of diarylethene films via selective dissolution of one photoisomer,” Appl. Phys. Lett. 103, 173112 (2013). Published, 11/2013.
  • P. Wang and R. Menon, “Optimization of generalized 1D dielectric nanostructures for enhanced light trapping in thin-film photovoltaics via boosting the local density of optical states,” Opt. Exp. 22, S1 A99-A110 (2013). Published, 10/2013.
  • F. Masid, T. L. Andrew and R. Menon, “Optical patterning of features with spacing below the far-field diffraction limit using absorbance modulation,” Opt. Exp. 21, 4 5209-5214 (2013). Published, 09/2013.
  • P. Wang and R. Menon, “Optimization of periodic nanostructures for enhanced light-trapping in ultra-thin photovoltaics,” Opt. Exp. 21, 5, 6274-6285 (2013). Published, 08/2013.
  • G. Kim, J-A. Dominguez-Caballero, H. Lee, D. Friedman and R. Menon, “Increased photovoltaic power output via diffractive spectrum separation,” Phys. Rev. Lett. 110, 123901 (2013). Published, 07/2013.
  • G. Pariani, R. Castagna, R. Menon, C. Bertarelli and A. Bianco, “Modeling the absorbance- modulation optical lithography in photochromic films,” Opt. Lett. 38(16) 3024-3027 (2013). Published, 06/2013.
  • P. Cantu, N. Brimhall, T. L. Andrew, R. Castagna, C. Bertarelli and R. Menon, “Subwavelength nanopatterning of photochromic diarylethene films,” Appl. Phys. Lett. 100, 183103 (2012). Published, 09/2012.
  • P. Wang and R. Menon, “Simulation and analysis of the angular response of 1D dielectric nanophotonic light-trapping structures in thin-film photovoltaics,” Opt. Exp. 20, S4, A545 (2012). Published, 08/2012.
  • P. Wang and R. Menon, "Simulation and optimization of 1D periodic dielectric nanostructures for light-trapping," Opt. Exp. 20(2), 1849 (2012). Published, 05/2012.
  • G. Kim, J-A. Dominguez-Caballero, and R. Menon, "Design and analysis of multi-wavelength diffractive optics," Opt. Exp. 20(2), 2814-2823 (2012). Published, 02/2012.
  • P. Wang and R. Menon, "Simulation and optimization of 1D periodic dielectric nanostructures for light-trapping," Opt. Exp. 20(2), 1849 (2012). Published, 01/2012.
  • N. Brimhall, T. L. Andrew, R. V. Manthena and R. Menon, “Breaking the far-field diffraction limit in optical nanopatterning,” Phys. Rev. Lett. 107, 205501 (2011). Published, 10/2011.
  • N. Brimhall, T. L. Andrew, R. V. Manthena and R. Menon, "Breaking the far-field diffraction limit in optical nanopatterning via repeated photochemical and electrochemical transitions in photochromic molecules,"Phys. Rev. Lett. 107, 205501 (2011). Published, 05/2011.
  • H-Y. Tsai, S. W. Thomas, III and R. Menon, “Parallel scanning optical nanoscopy with optically confined probes,” Opt. Exp. 18(15), 16015 (2010). Published, 10/2010.
  • H-Y. Tsai, S. W. Thomas, III and R. Menon, “Scanning optical nanoscopy with optically confined probes,” Opt. Exp. 18(15), 16015 (2010). Published, 02/11/2010.
  • 42. R. Menon, “Towards diffraction-unlimited optical nanopatterning,” Optics and Photonics News, 17, December 2009. Published, 12/01/2009.