Summary
Dr Alex Ivanov is Senior Lecturer (Assoc. Prof.) at the Department of Chemistry. His research focuses on the innovation of novel nanoscale sensors and platforms for single-molecule detection and delivery, that enable the studying of fundamentally important molecules in chemistry, biology, and medicine. Examples include tunnelling nanopore platform for high-resolution DNA fragment sizing and sequencing Nano Letters (2011), ACS Nano (2014), Nature Communications (2021A), Science Advances (2022), optical/plasmonic nanopore platforms Nano Letters (2013, 2015); ACS Nano (2015A), methods for on-demand delivery of single molecules ACS Nano (2015B), single-molecule detection in ultra-dilute (fM) samples Nature Communications (2016), nanopore/field-effect transistors for selective bioanalyte sensing Nature Communications (2017A), zeptolitre confinement of single molecules Nano Letters (2017, 2018), multiplexed single-molecule protein detection in human serum, Nature Communications (2017B, 2019,2021B), single-molecule nanotweezers that can extract single DNA, proteins and organelles from living cells, Nature Nanotechnology (2019) to name a few.
Research Interests:
Nanoelectronics and electrochemistry of single molecules
Single-molecule single-cell methods
Nanopore platforms, single-molecule delivery, and detection (nucleic acids and proteins)
Label-free detection of proteins linked to neurodegeneration
Point-of-care diagnostics
Alex's research publications can be found at the tab above, or on GoogleScholar
Research Highlights:
Nanoscale tweezers can perform single-molecule ‘biopsies’ on individual cells Nature Nanotechnology
Imperial College Website, Nature Medicine, Physicsworld
Reading of biological molecules improved up to 100x by doubling the sensors Nano Letters
Imperial College Website, Phys.org
Single-molecule multiplexed nanopore protein screening in human serum Nature Communications
Imperial College Website, Phys.org,
Nanopore field-effect transistor for selective single-molecule biosensing Nature Communications
Imperial College Website, Phys.org,
High-throughput Molecular Detection Nature Communications
Imperial College Website, Nanowerk
DNA Tunneling Detector Nano Letters
Imperial College Website, Nanowerk
RECENT Reviews from the group:
Solid-state nanopore sensors Nature Reviews Materials (2020)
In situ solid-state nanopore fabrication Chem. Soc. Rev. (2021)
Selected Publications
Journal Articles
Tang L, Yi L, Jiang T, et al., 2022, Measuring conductance switching in single proteins using quantum tunneling, Science Advances, Vol:8, ISSN:2375-2548, Pages:1-8
Ren R, Sun M, Goel P, et al., 2021, Single-molecule binding assay using nanopores and dimeric NP conjugates, Advanced Materials, Vol:33, ISSN:0935-9648
Cai S, Pataillot-Meakin T, Shibakawa A, et al., 2021, Single-molecule amplification-free multiplexed detection of circulating microRNA cancer biomarkers from serum, Nature Communications, Vol:12, ISSN:2041-1723
Fried JP, Swett JL, Nadappuram BP, et al., 2021, In situ solid-state nanopore fabrication., Chemical Society Reviews, ISSN:0306-0012
Tang L, Paulose Nadappuram B, Cadinu P, et al., 2021, Combined quantum tunnelling and dielectrophoretic trapping for molecular analysis at ultra-low analyte concentrations, Nature Communications, Vol:12, ISSN:2041-1723, Pages:1-8
Zhang Y, Takahashi Y, Hong SP, et al., 2019, High-resolution label-free 3D mapping of extracellular pH of single living cells, Nature Communications, Vol:10, ISSN:2041-1723, Pages:1-9
Cai S, Sze JYY, Ivanov AP, et al., 2019, Small molecule electro-optical binding assay using nanopores., Nat Commun, Vol:10
Paulose Nadappuram B, Cadinu P, Barik A, et al., 2019, Nanoscale tweezers for single-cell biopsies, Nature Nanotechnology, Vol:14, ISSN:1748-3387, Pages:80-88
Al Sulaiman D, Cadinu P, Ivanov AP, et al., 2018, Chemically modified hydrogel-filled nanopores: a tunable platform for single-molecule sensing, Nano Letters, Vol:18, ISSN:1530-6984, Pages:6084-6093
Cadinu P, Campolo G, Pud S, et al., 2018, Double barrel nanopores as a new tool for controlling single-molecule transport, Nano Letters, Vol:18, ISSN:1530-6984, Pages:2738-2745
Sze JYY, Ivanov AP, Cass AEG, et al., 2017, Single molecule multiplexed nanopore protein screening in human serum using aptamer modified DNA carriers, Nature Communications, Vol:8, ISSN:2041-1723, Pages:1-10
Ren R, Zhang Y, Paulose Nadappuram B, et al., 2017, Nanopore extended field effect transistor for selective single molecule biosensing, Nature Communications, Vol:8, ISSN:2041-1723, Pages:1-9
Cadinu P, Paulose Nadappuram B, Lee DJ, et al., 2017, Single molecule trapping and sensing using dual nanopores separated by a zeptoliter nanobridge, Nano Letters, Vol:17, ISSN:1530-6984, Pages:6376-6384
Edel JB, Freedman K, Otto L, et al., 2016, Nanopore sensing at ultra-low concentrations using single molecule dielectrophoretic trapping, Nature Communications, Vol:7, ISSN:2041-1723, Pages:1-9
Ivanov AP, Actis P, Jönsson P, et al., 2015, On-demand delivery of single DNA molecules using nanopipettes, Acs Nano, Vol:9, ISSN:1936-086X, Pages:3587-3595
Pitchford WH, Kim H-J, Ivanov AP, et al., 2015, Synchronized Optical and Electronic Detection of Biomolecules Using a Low Noise Nanopore Platform, ACS Nano, Vol:9, ISSN:1936-0851, Pages:1740-1748
Crick CR, Albella P, Ng B, et al., 2014, Precise Attolitre Temperature Control of Nanopore Sensors using a Nanoplasmonic Bullseye, Nano Letters, Vol:15, ISSN:1530-6992, Pages:553-559
Ivanov AP, Freedman KJ, Kim MJ, et al., 2014, High Precision Fabrication and Positioning of Nanoelectrodes in a Nanopore, Acs Nano
Miles BN, Ivanov AP, Wilson KA, et al., 2013, Single molecule sensing with solid-state nanopores: novel materials, methods, and applications, Chemical Society Reviews, Vol:42, Pages:15-28
Cecchini MP, Wiener A, Turek V, et al., 2013, Rapid Ultra-Sensitive Single Particle Surface Enhanced Raman Spectroscopy using Metallic Nanopores, Nano Letters
Ivanov AP, Instuli E, McGilvery CM, et al., 2011, DNA tunneling detector embedded in a nanopore, Nano Letters, Vol:11, ISSN:1530-6984, Pages:279-285