Publications de Yen-Cheng Liu | EPFL Graph Search

Spatiotemporal Interrogation of Single Spheroids Using Multiplexed Nanoplasmonic-fluorescence Imaging

Matthias Lütolf, Hatice Altug, Yen-Cheng Liu, Saeid Ansaryan, Luis Francisco Lorenzo Martin

Advances in organoid models, as ex vivo mini-organs, and the development of screening imaging technologies have continuously driven each other forward. A complete understanding of organoids requires detailed insights into the intertwined intraorganoid and ...

WILEY-V C H VERLAG GMBH2025

Multimodal Nanoplasmonic and Fluorescence Imaging for Simultaneous Monitoring of Single-Cell Secretory and Intracellular Dynamics

Hatice Altug, Yen-Cheng Liu, Saeid Ansaryan

Current imaging technologies are limited in their capability to simultaneously capture intracellular and extracellular dynamics in a spatially and temporally resolved manner. This study presents a multimodal imaging system that integrates nanoplasmonic sen ...

WILEY2025

Nanoplasmonic Single-Tumoroid Microarray for Real-Time Secretion Analysis

Hatice Altug, Yen-Cheng Liu, Nicolas Antoine Vincent Broguiere, Saeid Ansaryan, Luis Francisco Lorenzo Martin

Organoid tumor models have emerged as a powerful tool in the fields of biology and medicine as such 3D structures grown from tumor cells recapitulate better tumor characteristics, making these tumoroids unique for personalized cancer research. Assessment o ...

2024

Suppressing surface and interface recombination to afford efficient and stable inverted perovskite solar cells

Yen-Cheng Liu, Yong Ding

The top surface of the perovskite layer and the interface with the electron transporting layer play a key role in influencing the performance and operational stability of inverted perovskite solar cells (PSCs). A deficient or ineffective surface passivatio ...

ROYAL SOC CHEMISTRY2024

High-throughput spatiotemporal monitoring of single-cell secretions via plasmonic microwell arrays

Hatice Altug, Yen-Cheng Liu, Saeid Ansaryan

Methods for the analysis of cell secretions at the single-cell level only provide semiquantitative endpoint readouts. Here we describe a microwell array for the real-time spatiotemporal monitoring of extracellular secretions from hundreds of single cells i ...

NATURE PORTFOLIO2023

Label-free plasmonic microarray for multiplexed analysis of cells and tumor organoids

Yen-Cheng Liu

Investigating the dynamic activities of protein expression and signaling in living organisms is a crucial focus of intense research aimed at elucidating the processes that underlie disease progression and improving treatments and drug development. Resolvin ...

EPFL2023

Retarding solid-state reactions enable efficient and stable all-inorganic perovskite solar cells and modules

Mohammad Khaja Nazeeruddin, Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Farzaneh Fadaei Tirani, Olga Syzgantseva, Hiroyuki Kanda, Yen-Cheng Liu, Bin Ding, Yong Ding, Shunlin Zhang, Cheng Liu

All-inorganic CsPbI3 perovskite solar cells (PSCs) with efficiencies exceeding 20% are ideal candidates for appli-cation in large-scale tandem solar cells. However, there are still two major obstacles hindering their scale-up: (i) the inhomogeneous solid-s ...

AMER ASSOC ADVANCEMENT SCIENCE2023

Single-crystalline TiO2 nanoparticles for stable and efficient perovskite modules

Keith Gregory Brooks, Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Valentin Ianis Emmanuel Queloz, Wen Luo, Hiroyuki Kanda, Yen-Cheng Liu, Bin Ding, Yong Ding

The incorporation of electron transport layers based on single-crystalline TiO2 rhombohedral nanoparticles enables the realization of stable and efficient large-area perovskite solar cell modules. ...

Nature Portfolio2022

Molecular profiling of tumor-specific cytolytic CD4 T cells in human cancer

Hatice Altug, Xiaokang Li, Yen-Cheng Liu, Xuan Li

WILEY2022

Real-time monitoring of single-cell secretion with a high-throughput nanoplasmonic microarray

Hatice Altug, Xiaokang Li, Yen-Cheng Liu, Eduardo Romero Arvelo, Saeid Ansaryan

Proteins secreted by cells play significant roles in mediating many physiological, developmental, and pathological processes due to their functions in intra/intercellular communication and signaling. Conventional end-point methods are insufficient for unde ...

Elsevier2022

Crack-Free Monolayer Graphene Interlayer for Improving Perovskite Crystallinity and Energy Level Alignment in Efficient Inverted Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Kumar Varoon Agrawal, Shiqi Huang, Hiroyuki Kanda, Yen-Cheng Liu

Inverted planar perovskite solar cells (PSCs) have intrigued great promise in negative hysteresis, simple fabrication process, and flexible substrate implementation, in which the shared hole transport materiel is NiOx. However, the low-temperature solution ...

WILEY-V C H VERLAG GMBH2022

Tumor-specific cytolytic CD4 T cells mediate immunity against human cancer

David Gfeller, Georg Alexander Rockinger, Pedro Romero, Amélie Cachot, Hatice Altug, Margaux Saillard, Xiaokang Li, George Coukos, Yen-Cheng Liu, Alexandre Harari, Alexander Mathis

CD4 T cells have been implicated in cancer immunity for their helper functions. Moreover, their direct cytotoxic potential has been shown in some patients with cancer. Here, by mining single-cell RNA-seq datasets, we identified CD4 T cell clusters displayi ...

2021

Expanded Phase Distribution in Low Average Layer-Number 2D Perovskite Films: Toward Efficient Semitransparent Solar Cells

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Hiroyuki Kanda, Yen-Cheng Liu, Bin Ding, Yong Ding, Hao Huang, Xuehui Liu, Cheng Liu

The application of low average layer-number (< n & rang;

2021

Tuning structural isomers of phenylenediammonium to afford efficient and stable perovskite solar cells and modules

Keith Gregory Brooks, Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Hiroyuki Kanda, Yen-Cheng Liu, Bin Ding

Salt passivation of perovskite often results in formation of 2D perovskite layers, which impaired charge transport behaviour. Here, the authors study the energy barrier of 2D perovskite formation upon passivation by different iodide salt, and provide insig ...

Nature Portfolio2021

Crystallographically Oriented Hybrid Perovskites via Thermal Vacuum Codeposition

Mohammad Khaja Nazeeruddin, Mounir Driss Mensi, Cristina Roldán Carmona, Hiroyuki Kanda, Nadja Isabelle Desiree Klipfel, Yen-Cheng Liu, Maria Cristina Momblona Rincón, Cheng Liu

Hybrid lead halide perovskites typically form polycrystalline films that have multiple grain sizes and surface defects. A key engineering challenge toward commercialization is therefore the production of homogeneous, defect-free largearea devices achieving ...

2021

Tumor-Specific Cytolytic Cd4 T Cells Mediate Protective Immunity Against Human Cancer

David Gfeller, Pedro Romero, Amélie Cachot, Hatice Altug, Margaux Saillard, Xiaokang Li, George Coukos, Yen-Cheng Liu, Alexandre Harari, Alexander Mathis

BMJ PUBLISHING GROUP2020