scholarly journals Laser annealed in-situ P-doped Ge for on-chip laser source applications (Conference Presentation)

2016 ◽  
Author(s):  
Ashwyn Srinivasan ◽  
Marianna Pantouvaki ◽  
Yosuke Shimura ◽  
Clement Porret ◽  
Rik Van Deun ◽  
...  
Keyword(s):  
Laser Source ◽  
On Chip

scholarly journals Laser-excited elastic guided waves reveal the complex mechanics of nanoporous silicon

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Marc Thelen ◽  
Nicolas Bochud ◽  
Manuel Brinker ◽  
Claire Prada ◽  
Patrick Huber
Keyword(s):  
Guided Waves ◽  
Laser Ultrasonics ◽  
Bulk Silicon ◽  
Nanoporous Silicon ◽  
Stiffness Reduction ◽  
Mechanical Characterisation ◽  
Isotropic Elasticity ◽  
On Chip ◽  
Non Destructive

AbstractNanoporosity in silicon leads to completely new functionalities of this mainstream semiconductor. A difficult to assess mechanics has however significantly limited its application in fields ranging from nanofluidics and biosensorics to drug delivery, energy storage and photonics. Here, we present a study on laser-excited elastic guided waves detected contactless and non-destructively in dry and liquid-infused single-crystalline porous silicon. These experiments reveal that the self-organised formation of 100 billions of parallel nanopores per square centimetre cross section results in a nearly isotropic elasticity perpendicular to the pore axes and an 80% effective stiffness reduction, altogether leading to significant deviations from the cubic anisotropy observed in bulk silicon. Our thorough assessment of the wafer-scale mechanics of nanoporous silicon provides the base for predictive applications in robust on-chip devices and evidences that recent breakthroughs in laser ultrasonics open up entirely new frontiers for in-situ, non-destructive mechanical characterisation of dry and liquid-functionalised porous materials.

scholarly journals Controlled density glycodendron microarrays for studying carbohydrate–lectin interactions

2021 ◽  
Author(s):  
Antonio Di Maio ◽  
Anna Cioce ◽  
Silvia Achilli ◽  
Michel Thépaut ◽  
Corinne Vivès ◽  
...  
Keyword(s):  
Maldi Tof Ms ◽  
Maldi Tof ◽  
On Chip ◽  
Tof Ms

Density depended binding and selectivity is studied on glycodendron microarray with defined valency, which were prepared by on-chip synthesis and analysed by in situ MALDI-TOF MS.

In-situ control of on-chip angstrom gaps, atomic switches, and molecular junctions by light irradiation

Nano Today ◽  
2021 ◽  
Vol 39 ◽  
pp. 101226
Author(s):  
Surong Zhang ◽  
Chenyang Guo ◽  
Lifa Ni ◽  
Kerstin M. Hans ◽  
Weiqiang Zhang ◽  
...  
Keyword(s):  
Molecular Junctions ◽  
Light Irradiation ◽  
In Situ Control ◽  
On Chip

A Novel MEMS-Based Technique for In-Situ Characterization of Freestanding Nanometer Scale Thin Films Inside SEM and TEM

2001 ◽  
Author(s):  
M. A. Haque ◽  
M. T. A. Saif
Keyword(s):  
Thin Films ◽  
Tensile Testing ◽  
Uniaxial Tensile ◽  
Aluminum Specimen ◽  
Sem And Tem ◽  
Uniaxial Tensile Testing ◽  
Testing Facility ◽  
Film Specimen ◽  
On Chip

Abstract We present a MEMS-based technique for in-situ uniaxial tensile testing of freestanding thin films inside SEM and TEM. It integrates a freestanding thin film specimen with MEMS force sensors and structures to produce an on-chip tensile testing facility. Cofabrication of the specimen with force and displacement measuring mechanisms produces the following unique features: 1) Quantitative experimentation can be carried out in both SEM and TEM, 2) No extra gripping mechanism is required, 3) Specimen misalignment can be eliminated, 4) Pre-stress in specimen can be determined, and 5) Specimens with micrometer to nanometer thickness can be tested. We demonstrate the technique by testing a 200-nanometer thick Aluminum specimen in-situ in SEM. Significant strengthening and anelasticity were observed at this size scale.

scholarly journals The Rise of the OM-LoC: Opto-Microfluidic Enabled Lab-on-Chip

Micromachines ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1467
Author(s):  
Harry Dawson ◽  
Jinane Elias ◽  
Pascal Etienne ◽  
Sylvie Calas-Etienne
Keyword(s):  
Low Cost ◽  
Optical Components ◽  
New Era ◽  
Lab On Chip ◽  
Highly Sensitive ◽  
Multiple Challenges ◽  
On Chip ◽  
Optical Circuits ◽  
Made In

The integration of optical circuits with microfluidic lab-on-chip (LoC) devices has resulted in a new era of potential in terms of both sample manipulation and detection at the micro-scale. On-chip optical components increase both control and analytical capabilities while reducing reliance on expensive laboratory photonic equipment that has limited microfluidic development. Notably, in-situ LoC devices for bio-chemical applications such as diagnostics and environmental monitoring could provide great value as low-cost, portable and highly sensitive systems. Multiple challenges remain however due to the complexity involved with combining photonics with micro-fabricated systems. Here, we aim to highlight the progress that optical on-chip systems have made in recent years regarding the main LoC applications: (1) sample manipulation and (2) detection. At the same time, we aim to address the constraints that limit industrial scaling of this technology. Through evaluating various fabrication methods, material choices and novel approaches of optic and fluidic integration, we aim to illustrate how optic-enabled LoC approaches are providing new possibilities for both sample analysis and manipulation.

scholarly journals On-Chip in Situ Monitoring of Competitive Interfacial Anionic Chemisorption as a Descriptor for Oxygen Reduction Kinetics

2018 ◽  
Vol 4 (5) ◽  
pp. 590-599 ◽  
Author(s):  
Mengning Ding ◽  
Guangyan Zhong ◽  
Zipeng Zhao ◽  
Zhihong Huang ◽  
Mufan Li ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
In Situ Monitoring ◽  
Reduction Kinetics ◽  
On Chip ◽  
Oxygen Reduction Kinetics

An autonomous lab-on-chip sensor for in situ measurements of seawater total alkalinity

2021 ◽  
Author(s):  
Allison Schaap ◽  
Stathys Papadimitriou ◽  
Socratis Loucaides ◽  
Matthew Mowlem
Keyword(s):  
In Situ Measurements ◽  
Total Alkalinity ◽  
Lab On Chip ◽  
On Chip

scholarly journals Dynamically tuned non-classical light emission from atomic defects in hexagonal boron nitride

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Snežana Lazić ◽  
André Espinha ◽  
Sergio Pinilla Yanguas ◽  
Carlos Gibaja ◽  
Félix Zamora ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Information Technologies ◽  
Light Emission ◽  
Hexagonal Boron Nitride ◽  
Theoretical Calculations ◽  
Optical Emission ◽  
Spectral Tuning ◽  
Spectral Detection ◽  
On Chip

Abstract Luminescent defects in hexagonal boron nitride (h-BN) have recently emerged as a promising platform for non-classical light emission. On-chip solutions, however, require techniques for controllable in-situ manipulation of quantum light. Here, we demonstrate the dynamic spectral and temporal tuning of the optical emission from h-BN via moving acousto-mechanical modulation induced by stimulated phonons. When perturbed by the propagating acoustic phonon, the optically probed radiative h-BN defects are periodically strained and their sharp emission lines are modulated by the deformation potential coupling. This results in an acoustically driven spectral tuning within a 2.5-meV bandwidth. Our findings, supported by first-principles theoretical calculations, reveal exceptionally high elasto-optic coupling in h-BN of ~50 meV/%. Temporal control of the emitted photons is achieved by combining the acoustically mediated fine-spectral tuning with spectral detection filtering. This study opens the door to the use of sound for scalable integration of h-BN emitters in nanophotonic and quantum information technologies.

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