https://www.obrien-research.org/new-gallery daily 0.75 2018-03-19 https://www.obrien-research.org/home daily 1.0 2023-03-13 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524254474761-MZ65DGJDGLZ0MI38GUTP/c6tc02327d-f6_hi-res+copy.gif Home https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524254309958-3H4EW69NF7UXSB9HWINL/_MG_7305_edit-vi.jpg Home https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1585875937918-H0J8QSNDX0U4XN3UEYBG/DSC00143+crop.JPG Home https://www.obrien-research.org/take-action daily 0.75 2018-04-08 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1523229198597-SQLO159574TL2PPLVPP3/Ducks.jpg Apply https://www.obrien-research.org/stephen-obrien daily 0.75 2025-10-11 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1523227340527-W2WT2I8RN7U89MP65KTE/headshot+with+tie.png Stephen O'Brien https://www.obrien-research.org/julien-lombardi daily 0.75 2025-10-11 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1522848172741-CF1U6ZBVO49ULPWQST2J/IMG_0212.JPG Julien Lombardi https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1522337924232-A8AZ7V09DRK6X2HDMDPG/Figure+5+a.gif Julien Lombardi Effective dielectric measurements of KNbO3 and KBNNO samples made into a 0-3 nanocomposite with poly-furfuryl alcohol. The data shows and increase in dielectric constant with increasing Ba and Ni concentrations. https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1522337892736-TFQVAWDOW2H6SHJZ6U4T/TC-ART-06-2016-002327+Figure+2.png Julien Lombardi TEM images of KNbO3, and KNbO3 with various doping concentrations of Ba and Ni, the resulting crystalline structure, known as KBNNO became more cubic in morphology with higher Ba and Ni concentrations. https://www.obrien-research.org/frederick-pearsall daily 0.75 2023-03-18 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1541602327762-T3S9D40V3RGRZ1EUWIVO/EDS_figure.png Frederick Pearsall Energy dispersive X-ray spectroscopy (EDS) of a novel Hollandite crystal. https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1523773232398-QMGEXCPGX0L6VQNNNH16/OBrien_site_FredP.png Frederick Pearsall Frederick Pearsall obtained his B.S. in Chemistry with a focus on Biological Chemistry at Stony Brook University in 2014. His research currently involves the synthesis and characterization of nanocrystalline transition metal oxides for use in various applications including energy storage, photocatalysis and sensors. Frederick is the recipient the Rose K Rose Dissertation Award for best-written thesis. He has been an Advanced Science Research Center NanoFab Fellow, where he worked in a clean room nanofabrication facility, training students, faculty, and startup companies on using advanced equipment. He is a passionate turophile. Contact: fpearsall@gradcenter.cuny.edu https://www.obrien-research.org/rob-collison daily 0.75 2025-10-11 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1521771701687-YXSB2AIR2UUIUK99O8A3/Au+nanodisks+on+Borofloat+glass.jpg Rob Collison https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1523995819181-48HLEIUBB84LW4EWN9TW/h11-orh10.png Rob Collison https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1523994626933-4TF85BQ7MRRFGHDOZUXK/20xdf-2-dim-2.jpg Rob Collison https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1523994430061-538IKE6FADICGLYKHVUP/5xbf_upperright.jpg Rob Collison https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1523995799801-TB5PK2H8KO470O82ZFM1/a2.png Rob Collison https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1521769490846-GCDCIY8UBU0EEV7L6KCK/Rob.jpg Rob Collison https://www.obrien-research.org/richard-huang daily 0.75 2025-10-11 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1521825535227-4E769RKT9P9O41SBTILW/File+Feb+26%2C+5+02+57+PM.jpeg Richard Huang Richard is a PhD student co-advised by Dr. Stephen O'Brien and Dr. Rein Ulijn. His research interests include the novel design of multi-functionalized nanoparticles for cancer therapeutics and diagnostics. Prior to joining CUNY’s PhD program, Richard received his B.S. in biochemistry from Miami University and M.S. in chemistry from Long Island University. Besides research, Richard likes travelling around the world to experience diverse cultures. https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1521830099339-8P88DY2RXK4DFT3F6FXR/Au%40MUA+tannic+5th+8.jpg Richard Huang - Au nanoparticles Au nanoparticles, citrate capped, 10 nm in diameter. https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1521829913684-3F9D9P4UW8YQI2DPJFYP/Au%40SiO2+trial+3+1d+2+031618.jpg Richard Huang Silica coated Au nanoparticles, no capping agent, 25 nm in diameter. https://www.obrien-research.org/nasim-farahmand daily 0.75 2025-10-11 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1523774831514-TF9AEFFMIFHDAPYEC1SL/unnamed+%282%29+-+Copy.jpg Nasim Farahmand https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1522041112848-NZTX6YXOLYD0NK8499I0/nasim2.jpg Nasim Farahmand https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1522041113355-E57V0CUUCKJZH6H7D3TB/nasim1.jpg Nasim Farahmand https://www.obrien-research.org/acs-1 daily 0.75 2019-11-20 https://www.obrien-research.org/research-page daily 0.75 2018-04-23 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1523656698545-YOTL6CGCGP95LDRD1S8E/Untitled.png Lithium metal for batteries The rods, with lengths in excess of microns, give rise to smooth films of lithium with an iridescent blue color The cell design relies on a lithium ion conducting solid state membrane to transport Li+ ions from an aqueous mineral solution (lithium carbonate or other suitable lithium containing feedstock) to an organic conducting electrolyte in the absence of additives https://www.obrien-research.org/nanocrystal-synthesis-and-selfassembly daily 0.75 2018-04-20 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1523655934013-C5G3AQRY2QWREHTWZVS9/Untitled.png Nanocrystal synthesis and characterization Electron microscopy of Cu2O nanocrystals. (a) a monolayer on the TEM grid surface (b) a superlattice, in which the nanoparticles have self-assembled into a close packed structure (c) HRTEM lattice imaging showing single crystal and lattice spacings (d) selected area electron diffraction pattern. https://www.obrien-research.org/multiferroic-oxides daily 0.75 2018-04-23 https://www.obrien-research.org/the-metacapacitor-project daily 0.75 2019-11-20 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524450300288-ZTBZLEN57Z9C8NWIFNK9/Overall_architecture_transaction.png Metacapacitor project https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524451100144-UR70P9DSKZEM02I2NNMP/6-layer-closeup-207.jpg Metacapacitor project https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524451140314-C4YIISU1PYEKU1EZN99T/image10.png Metacapacitor project https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524451166041-06DAHU1TBZNUZ133IK41/image02.png Metacapacitor project https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524451195972-MXDM9YR07N3YL6GIB5Q4/image07.png Metacapacitor project https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524451494547-JYRQ8JNE1WO0BLETJKYU/meta_electrical.png Metacapacitor project https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524451239784-EPXVUA93VOBI59XJJLA0/capacitance-by-layer.png Metacapacitor project https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524451264381-JBA2LR147O3X9LWYC5ZU/image15.jpg Metacapacitor project https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524451383130-IP5SMNG6SVACMPFHRBCE/image06.png Metacapacitor project https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524451298211-LCWYWE8C3ETNFR541TGB/image12.jpg Metacapacitor project https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524451413290-MHQ79VIRITJS5HW3M4TK/image17.png Metacapacitor project https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524451467314-7OQ17CYRF8K0L4Z9UUTI/image20.png Metacapacitor project https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524451547548-L7UOFR04K4EM4OBZSOFK/image19.png Metacapacitor project https://www.obrien-research.org/nanocrystal-selfassembly daily 0.75 2018-04-20 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524238745235-F2HTFR2TZU6DHGK4SMXF/nn-2008-00129s_0006.jpeg Nanocrystal self-assembly A nanoparticle radius ratio dependent study of the formation of binary nanoparticle superlattices (BNSLs) of CdTe and CdSe quantum dots. While keeping all other parameters identical in the system, the effective nanoparticle radius ratio, γeff, was tuned to allow the formation of five different BNSL structures, AlB2, cub-NaZn13, ico-NaZn13, CaCu5, and MgZn2. For each structure, γeff is located close to a local maximum of its space-filling factor, based on a model for space filling principles. We demonstrate the ability to select specific BNSLs based solely on γeff, highlighting the role of entropic forces as a driver for self-assembly. https://www.obrien-research.org/overview daily 0.75 2018-04-20 https://www.obrien-research.org/gel-collection daily 0.75 2018-04-20 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524236135036-VX6KX8LDICO14MSIP01H/gel+collection+1.png Gel collection Gel collection in action: (a) Photo images, (b) XRD patterns and yields (inset) of BST nanocrystals evolution with the crystallization time at 55 deg. C, respectively. (c) TEM image of BST nanocrystals (inset: high-resolution image of a particle oriented along the [111] direction). (d) XRD of various BT-based perovskite nanocrystals. The stick patterns for BaTiO3 (ICSD #029147, in black) and SrTiO3 (ICSD# 080874, in red) are included in (b) and (d). https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524236275408-GSSSYRYG41OHASKQEARW/Picture2.png Gel collection Printable BST nanocrystal solution (a) ethanol as solvent (40 mg/ml) and (b) FA as solvent (50 mg/ml), a red (633 nm) laser beam travelling through the transparent solution, showing the Tyndall effect and confirming a uniform colloidal dispersion of nanocrystals; (c) cross-section SEM image of a BST/PFA nanocomposite thin film, and (d) dielectric properties of a BST/PFA thin film. https://www.obrien-research.org/contact daily 0.75 2018-05-01 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524256106683-K9R81HZ5M1I37NYGWM5X/IMG_4127.JPG Contact https://www.obrien-research.org/partners daily 0.75 2018-05-01 https://www.obrien-research.org/overview-1 daily 0.75 2018-04-20 https://www.obrien-research.org/publications daily 0.75 2025-10-11 https://www.obrien-research.org/anya-olwen daily 0.75 2023-03-18 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1524449420888-KRUV233U6LC7A83QG4ZZ/Anya_Olwen2.jpg Anya Olwen https://www.obrien-research.org/sponsors daily 0.75 2018-05-01 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1525192416041-NFGCLWZ0YYX5UP5M654Q/2000px-Seal_of_the_United_States_Department_of_Energy.jpg Sponsors https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1525191998536-SZOTZ0T7EA0T6CVL9J03/NSF_4-Color_bitmap_Logo.jpg Sponsors https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1525192271883-H53KJXT0J8DVNEYHOWW5/ARPA-E_Strategic-logo.jpg Sponsors https://www.obrien-research.org/previous-courses-taught daily 0.75 2020-04-03 https://www.obrien-research.org/steves-mindfulness-pages daily 0.75 2020-07-01 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1585878065899-T7GNL1BL55X5C129NJAO/71K74Ew2RjL._AC_SL1000_.jpg Steve's Mindfulness Pages https://www.obrien-research.org/some-information-for-your-consideration daily 0.75 2020-07-01 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1593550817199-1IT46SCHCDXEB1LF4N13/unnamed.jpg Some information for your consideration https://www.obrien-research.org/some-links-for-your-consideration daily 0.75 2020-09-18 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1593570000524-CVJ6P4EOHTN78QD8WZL1/unnamed-2-700x424.png Some links for your consideratiion https://www.obrien-research.org/references-and-personal-influences daily 0.75 2020-07-01 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/1593574202087-ANF3YG8YQSRFS89IUGXK/hydrangea-care.jpg References and Personal Influences https://www.obrien-research.org/new-page daily 0.75 2021-11-18 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/38a23974-863a-4c1a-bee5-ba2795e2ca0b/Picture1.png Biomedical applications of nanocrystals - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.obrien-research.org/natalie-boykoff daily 0.75 2025-10-11 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/61733cb8-292b-4282-9a19-aca1d5f2f40f/Natalie+Boykoff.jpg Natalie Boykoff https://www.obrien-research.org/patrick-yang daily 0.75 2025-10-11 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/314c95bd-4938-48ac-90b0-62f9678dc093/1731180482694.jpeg Patrick Yang - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.obrien-research.org/home-alt-bedford daily 0.75 2025-05-09 https://images.squarespace-cdn.com/content/v1/52a74d9ae4b0253945d2aee9/1390500612440-PGQSIY8KL9F7T5VIXQLO/chambers-2.jpg Home Alt A better world Starts with a choice Contact Us https://images.squarespace-cdn.com/content/v1/52a74d9ae4b0253945d2aee9/1390500503574-5BAPXZO9U06UV61P49UO/chambers1.jpg Home Alt Sustainability Starts with you Join Us https://images.squarespace-cdn.com/content/v1/52a74d9ae4b0253945d2aee9/1390500933384-LII4SRIPHFYOUFX0UCXC/chambers-4.jpg Home Alt A better world Starts with a choice Join Us https://images.squarespace-cdn.com/content/v1/52a74d9ae4b0253945d2aee9/1390504287124-HQ8GNX1JCE22V047MSQ9/chambers-8.jpg Home Alt Preserve Nature Join Us https://www.obrien-research.org/fariha-reza daily 0.75 2025-10-11 https://images.squarespace-cdn.com/content/v1/5aafbc5b266c0703817616ab/0c6c0de2-e63f-4cf5-b591-47d5aee33f7d/Image-empty-state.png Fariha Reza - Make it stand out Whatever it is, the way you tell your story online can make all the difference.